diff --git a/katrain/KataGo/analysis_config.cfg b/katrain/KataGo/analysis_config.cfg
index 203b267..7d34321 100644
--- a/katrain/KataGo/analysis_config.cfg
+++ b/katrain/KataGo/analysis_config.cfg
@@ -1,11 +1,17 @@
 # Example config for C++ (non-python) gtp bot
 
 # SEE NOTES ABOUT PERFORMANCE AND MEMORY USAGE IN gtp_example.cfg
+# SEE NOTES ABOUT numSearchThreads AND OTHER IMPORTANT PARAMS BELOW!
 
 # Logs------------------------------------------------------------------------------------
 
 # Where to output log?
 logFile = "~/.katrain/katago_log.txt"
+# logFile = analysis.log  # Use this instead of logDir to just specify a single file directly
+# logToStderr = true      # Echo everything output to log file to stderr as well
+# logAllRequests = false  # Log all input lines received to the analysis engine.
+# logAllResponses = false # Log all lines output to stdout from the analysis engine.
+# logSearchInfo = false   # Log debug info for every search performed
 
 # Controls the number of moves after the first move in a variation.
 # analysisPVLen = 15
@@ -47,20 +53,56 @@ maxVisits = 500
 # If provided, cap search time at this many seconds
 # maxTime = 60
 
-# Number of threads to use in each search in parallel for any SINGLE position.
-# NOTE: Analysis engine can specify number of POSITIONS to be able to search in parallel via command line argument
-# so this number does not necessarily need to be larger than 1, although you can still set it larger if you prefer
-# to analyze fewer positions in parallel but spend more threads on each position.
-# Generally, having more threads on a single position will worsen the quality of search slightly, holding fixed the
-# number of visits, and thread contention will reduce efficiency, so cross-position parallelization is preferable
-# to numSearchThreads, but numSearchThreads is preferable if you want to reduce latency, and have individual
-# searches complete faster by doing fewer of them at a time.
-numSearchThreads = 6
 
-# GPU Settings-------------------------------------------------------------------------------
+# numSearchThreads is the number of threads to use in each MCTS tree search in parallel for any individual position.
+# But NOTE: Analysis engine also specifies max number of POSITIONS to be able to search in parallel via command line
+# argument, -num-analysis-threads.
+
+# Parallelization across positions is more efficient since the threads on different positions operate
+# on different MCTS trees so they don't have to synchronize with each other. Also, multiple threads on the same MCTS
+# tree weakens the search (holding playouts fixed) due to out of date statistics on nodes and suboptimal exploration,
+# although the loss is still quite small for only 2,4,8 threads. So you often want to keep numSearchThreads small,
+# unlike in GTP.
+
+# But obviously you only get the benefit of parallelization across positions when you actually have lots of positions
+# that you are querying at once.
+
+# Therefore:
+# * If you plan to use the analysis engine only for batch processing large numbers of positions,
+#   it's preferable to set this to only a small number (e.g. 1,2,4) and use a higher -num-analysis-threads.
+# * But if you sometimes plan to query the analysis engine for single positions, or otherwise in smaller quantities
+#   than -num-analysis-threads, or if you plan to be user-interactive such that the response time on some individual
+#   analysis requests is important to keep low, then set this to a larger number and use somewhat fewer analysis threads,
+#   That way, individual searches complete faster due to having more threads on each one and doing fewer other ones at a time.
+
+# For 19x19 boards, weaker GPUs probably want a TOTAL number of threads (numSearchThreads * num-analysis-threads)
+# between 4 and 32. Mid-tier GPUs probably between 16 and 64. Strong GPUs probably between 32 and 256.
+# But there's no substitute for experimenting and seeing what's best for your hardware and your usage case.
+# Keep in mind that the number of threads you want doesn't necessarily have much to do with how many cores you
+# have on your system, and could easily exceed the number of cores. GPU batching is (usually) the dominant consideration.
+numSearchThreads = 10
+
+
+# nnMaxBatchSize is the max number of positions to send to a single GPU at once. Generally, it should be the case that:
+# (number of GPUs you will use * nnMaxBatchSize) >= (numSearchThreads * num-analysis-threads)
+# That way, when each threads tries to request a GPU eval, your batch size summed across GPUs is large enough to handle them
+# all at once. However, it can be sensible to set this a little smaller if you are limited on GPU memory,
+# too large a number may fail if the GPU doesn't have enough memory.
+nnMaxBatchSize = 96
+
+# Uncomment and set these smaller if you ONLY are going to use the analysis engine for smaller boards (or plan to
+# run multiple instances, with some instances only handling smaller boards). It should improve performance.
+# It may also mean you can use more threads profitably.
+# maxBoardXSizeForNNBuffer = 19
+# maxBoardYSizeForNNBuffer = 19
+
+# TO USE MULTIPLE GPUS:
+# Uncomment and set this to the number of GPUs you have and/or would like to use...
+# AND if it is more than 1, uncomment the appropriate CUDA or OpenCL section below.
+# numNNServerThreadsPerModel = 1
+
+# Other General GPU Settings-------------------------------------------------------------------------------
 
-# Maximum number of positions to send to GPU at once.
-nnMaxBatchSize = 72
 # Cache up to 2 ** this many neural net evaluations in case of transpositions in the tree.
 nnCacheSizePowerOfTwo = 19
 # Size of mutex pool for nnCache is 2 ** this
@@ -99,7 +141,6 @@ nnRandomize = true
 # cudaUseFP16 = auto
 # cudaUseNHWC = auto
 
-
 # OpenCL GPU settings--------------------------------------
 # These only apply when using the OpenCL version of KataGo.
 
diff --git a/katrain/KataGo/katago b/katrain/KataGo/katago
index 6516368..d582034 100755
Binary files a/katrain/KataGo/katago and b/katrain/KataGo/katago differ
diff --git a/katrain/KataGo/katago-cpu b/katrain/KataGo/katago-cpu
deleted file mode 100755
index c2f2956..0000000
Binary files a/katrain/KataGo/katago-cpu and /dev/null differ
diff --git a/katrain/config.json b/katrain/config.json
index c5770b4..fad22c9 100644
--- a/katrain/config.json
+++ b/katrain/config.json
@@ -1,6 +1,7 @@
 {
     "engine": {
         "katago": "",
+        "altcommand": "",
         "model": "katrain/models/g170e-b15c192-s1672170752-d466197061.bin.gz",
         "config": "katrain/KataGo/analysis_config.cfg",
         "threads": 12,
@@ -16,7 +17,7 @@
         "anim_pv_time": 0.5,
         "debug_level": 0,
         "lang": "en",
-        "version": "1.3.5"
+        "version": "1.4.0"
     },
     "timer": {
         "byo_length": 30,
diff --git a/katrain/core/constants.py b/katrain/core/constants.py
index 2b86515..d37d410 100644
--- a/katrain/core/constants.py
+++ b/katrain/core/constants.py
@@ -1,6 +1,6 @@
-VERSION = "1.3.5"
+VERSION = "1.4.0"
 HOMEPAGE = "https://github.com/sanderland/katrain"
-CONFIG_MIN_VERSION = "1.3.3"  # keep config files from this version
+CONFIG_MIN_VERSION = "1.4.0"  # keep config files from this version
 
 OUTPUT_ERROR = -1
 OUTPUT_KATAGO_STDERR = -0.5
diff --git a/katrain/gui/popups.py b/katrain/gui/popups.py
index e5860f2..6c275da 100644
--- a/katrain/gui/popups.py
+++ b/katrain/gui/popups.py
@@ -2,6 +2,7 @@ import glob
 import os
 import re
 from typing import Any, Dict, List, Tuple, Union
+from zipfile import ZipFile
 
 from kivy.clock import Clock
 from kivy.metrics import dp
@@ -10,6 +11,7 @@ from kivy.uix.anchorlayout import AnchorLayout
 from kivy.uix.boxlayout import BoxLayout
 from kivy.uix.label import Label
 from kivy.uix.popup import Popup
+from kivy.utils import platform
 from kivymd.app import MDApp
 from kivymd.uix.boxlayout import MDBoxLayout
 from kivymd.uix.selectioncontrol import MDCheckbox
@@ -374,12 +376,14 @@ class ConfigPopup(QuickConfigGui):
     def __init__(self, katrain):
         super().__init__(katrain)
         self.paths = [self.katrain.config("engine/model"), "katrain/models", "~/.katrain"]
+        self.katago_paths = [self.katrain.config("engine/katago"), "katrain/KataGo", "~/.katrain"]
         MDApp.get_running_app().bind(language=self.check_models)
+        MDApp.get_running_app().bind(language=self.check_katas)
 
     def build_and_set_properties(self, *_args):
         super().build_and_set_properties()
 
-    def check_models(self, *args):  # WIP
+    def check_models(self, *args):
         done = set()
         model_files = []
         for path in self.paths + [self.model_path.text]:
@@ -405,12 +409,55 @@ class ConfigPopup(QuickConfigGui):
         self.model_files.values = [models_available_msg] + model_files
         self.model_files.text = models_available_msg
 
+    def check_katas(self, *args):
+        done = set()
+        model_files = []
+        for path in self.katago_paths + [self.katago_path.text]:
+            path = path.rstrip("/\\")
+            if path.startswith("katrain"):
+                path = path.replace("katrain", PATHS["PACKAGE"].rstrip("/\\"), 1)
+            path = os.path.expanduser(path)
+            if not os.path.isdir(path):
+                path, _file = os.path.split(path)
+            slashpath = path.replace("\\", "/")
+            if slashpath in done or not os.path.isdir(path):
+                continue
+            done.add(slashpath)
+            files = [
+                f.replace("/", os.path.sep).replace(PATHS["PACKAGE"], "katrain")
+                for ftype in ["katago*"]
+                for f in glob.glob(slashpath + "/" + ftype)
+                if os.path.isfile(f) and not f.endswith(".zip")
+            ]
+            if files and path not in self.paths:
+                self.paths.append(path)  # persistent on paths with models found
+            model_files += files
+        katas_available_msg = i18n._("katago binaries available").format(num=len(model_files))
+        self.katago_files.values = [katas_available_msg, i18n._("default katago option")] + model_files
+        self.katago_files.text = katas_available_msg
+
     MODELS = {
         "latest 20b": "https://github.com/lightvector/KataGo/releases/download/v1.4.5/g170e-b20c256x2-s5303129600-d1228401921.bin.gz",
         "latest 30b": "https://github.com/lightvector/KataGo/releases/download/v1.4.5/g170-b30c320x2-s4824661760-d1229536699.bin.gz",
         "latest 40b": "https://github.com/lightvector/KataGo/releases/download/v1.4.5/g170-b40c256x2-s5095420928-d1229425124.bin.gz",
     }
 
+    KATAGOS = {
+        "windows": {
+            "Official OpenCL v1.6.0": "https://github.com/lightvector/KataGo/releases/download/v1.6.0/katago-v1.6.0-gpu-opencl-windows-x64.zip",
+            "Official OpenCL v1.6.0 (32 bit)": "https://github.com/lightvector/KataGo/releases/download/v1.6.0/katago-v1.6.0-gpu-opencl-windows-x32-dont-use-unless-actually-32bit-windows.zip",
+            "Official CUDA v1.6.0 (New NVIDIA cards)": "https://github.com/lightvector/KataGo/releases/download/v1.6.0/katago-v1.6.0-gpu-cuda10.2-windows-x64.zip",
+            "Eigen AVX2 (Modern CPUs) v1.6.0": "https://github.com/lightvector/KataGo/releases/download/v1.6.0/katago-v1.6.0-cpu-eigen-avx2-windows-x64.zip",
+            "Eigen (CPU, Non-optimized) v1.6.0": "https://github.com/lightvector/KataGo/releases/download/v1.6.0/katago-v1.6.0-cpu-eigen-windows-x64.zip",
+        },
+        "linux": {
+            "Official OpenCL v1.6.0": "https://github.com/lightvector/KataGo/releases/download/v1.6.0/katago-v1.6.0-gpu-opencl-linux-x64.zip",
+            "Official CUDA v1.6.0 (New NVIDIA cards)": "https://github.com/lightvector/KataGo/releases/download/v1.6.0/katago-v1.6.0-gpu-cuda10.2-linux-x64.zip",
+            "Eigen AVX2 (Modern CPUs) v1.6.0": "https://github.com/lightvector/KataGo/releases/download/v1.6.0/katago-v1.6.0-cpu-eigen-avx2-linux-x64.zip",
+            "Eigen (CPU, Non-optimized) v1.6.0": "https://github.com/lightvector/KataGo/releases/download/v1.6.0/katago-v1.6.0-cpu-eigen-linux-x64.zip",
+        },
+    }
+
     def download_models(self, *_largs):
         def download_complete(req, tmp_path, path, model):
             try:
@@ -452,6 +499,72 @@ class ConfigPopup(QuickConfigGui):
             self.download_progress_box.add_widget(Label(text=i18n._("All models downloaded"), text_size=(None, dp(50))))
             print("x")
 
+    def download_katas(self, *_largs):
+        def unzipped_name(zipfile):
+            if platform == "windows":
+                return zipfile.replace(".zip", ".exe")
+            else:
+                return zipfile.replace(".zip", "")
+
+        def download_complete(req, tmp_path, path, binary):
+            try:
+                if tmp_path.endswith(".zip"):
+                    with ZipFile(tmp_path, "r") as zipObj:
+                        exes = [f for f in zipObj.namelist() if f.startswith("katago")]
+                        if len(exes) != 1:
+                            raise FileNotFoundError(
+                                f"Zip file {tmp_path} does not contain exactly 1 file starting with 'katago' (contents: {zipObj.namelist()})"
+                            )
+                        with open(path, "wb") as fout:
+                            fout.write(zipObj.read(exes[0]))
+                else:
+                    os.rename(tmp_path, path)
+                self.katrain.log(f"Download of katago binary {binary} model complete -> {path}", OUTPUT_INFO)
+            except Exception as e:
+                self.katrain.log(
+                    f"Download of katago binary {binary} complete, but could not move file: {e}", OUTPUT_ERROR
+                )
+            self.check_katas()
+
+        for c in self.download_progress_box.children:
+            if isinstance(c, ProgressLoader) and c.request:
+                c.request.cancel()
+        self.katago_download_progress_box.clear_widgets()
+        downloading = False
+        for name, url in self.KATAGOS.get(platform, {}).items():
+            filename = os.path.split(url)[1]
+            exe_name = unzipped_name(filename)
+            if not any(os.path.split(f)[1] == exe_name for f in self.katago_files.values):
+                savepath_tmp = os.path.expanduser(os.path.join("~/.katrain", filename))
+                exe_path_name = os.path.expanduser(os.path.join("~/.katrain", exe_name))
+                self.katrain.log(f"Downloading binary {name} from {url} to {savepath_tmp}", OUTPUT_INFO)
+                progress = ProgressLoader(
+                    download_url=url,
+                    path_to_file=savepath_tmp,
+                    downloading_text=f"Downloading {name}: " + "{}",
+                    label_downloading_text=f"Starting download for {name}",
+                    download_complete=lambda req, tmp=savepath_tmp, path=exe_path_name, model=name: download_complete(
+                        req, tmp, path, model
+                    ),
+                    download_redirected=lambda req, mname=name: self.katrain.log(
+                        f"Download {mname} redirected {req.resp_headers}", OUTPUT_DEBUG
+                    ),
+                    download_error=lambda req, error, mname=name: self.katrain.log(
+                        f"Download of {mname} failed or cancelled ({error})", OUTPUT_ERROR
+                    ),
+                )
+                progress.start(self.katago_download_progress_box)
+                downloading = True
+        if not downloading:
+            if not self.KATAGOS.get(platform):
+                self.katago_download_progress_box.add_widget(
+                    Label(text=f"No binaries available for platform {platform}", text_size=(None, dp(50)))
+                )
+            else:
+                self.katago_download_progress_box.add_widget(
+                    Label(text=i18n._("All binaries downloaded"), text_size=(None, dp(50)))
+                )
+
     def update_config(self, save_to_file=True):
         updated = super().update_config(save_to_file=save_to_file)
         self.katrain.debug_level = self.katrain.config("general/debug_level", OUTPUT_INFO)
diff --git a/katrain/i18n/locales/cn/LC_MESSAGES/katrain.mo b/katrain/i18n/locales/cn/LC_MESSAGES/katrain.mo
index b27b724..e1f980a 100644
Binary files a/katrain/i18n/locales/cn/LC_MESSAGES/katrain.mo and b/katrain/i18n/locales/cn/LC_MESSAGES/katrain.mo differ
diff --git a/katrain/i18n/locales/cn/LC_MESSAGES/katrain.po b/katrain/i18n/locales/cn/LC_MESSAGES/katrain.po
index 478f96d..ad57043 100644
--- a/katrain/i18n/locales/cn/LC_MESSAGES/katrain.po
+++ b/katrain/i18n/locales/cn/LC_MESSAGES/katrain.po
@@ -617,3 +617,19 @@ msgstr ""
 #. TODO
 msgid "engine:altcommand"
 msgstr "Override Engine Command"
+
+#. TODO - button in general settings for downloading models
+msgid "download katago button"
+msgstr "Download KataGo versions"
+
+#. TODO - shown on on the model select dropdown
+msgid "katago binaries available"
+msgstr "{num} available binaries found"
+
+#. TODO - shown on on the katago binary select dropdown
+msgid "default katago option"
+msgstr "Detect platform and use provided binary"
+
+#. TODO - error message on trying to download models when already done
+msgid "All binaries downloaded"
+msgstr "All available binaries already downloaded"
diff --git a/katrain/i18n/locales/de/LC_MESSAGES/katrain.mo b/katrain/i18n/locales/de/LC_MESSAGES/katrain.mo
index 7273c16..f4fe993 100644
Binary files a/katrain/i18n/locales/de/LC_MESSAGES/katrain.mo and b/katrain/i18n/locales/de/LC_MESSAGES/katrain.mo differ
diff --git a/katrain/i18n/locales/de/LC_MESSAGES/katrain.po b/katrain/i18n/locales/de/LC_MESSAGES/katrain.po
index 0ec100f..739b9b4 100644
--- a/katrain/i18n/locales/de/LC_MESSAGES/katrain.po
+++ b/katrain/i18n/locales/de/LC_MESSAGES/katrain.po
@@ -655,9 +655,25 @@ msgstr "Colour Theme"
 #. TODO
 msgid "engine:altcommand:hint"
 msgstr ""
-"Full command used to start the engine, for e.g. using plink to connect to a "
-"remote engine. All other model options will be ignored."
+"Full command used to start the engine. All other model options will be "
+"ignored."
 
 #. TODO
 msgid "engine:altcommand"
 msgstr "Override Engine Command"
+
+#. TODO - button in general settings for downloading models
+msgid "download katago button"
+msgstr "Download KataGo versions"
+
+#. TODO - shown on on the model select dropdown
+msgid "katago binaries available"
+msgstr "{num} available binaries found"
+
+#. TODO - shown on on the katago binary select dropdown
+msgid "default katago option"
+msgstr "Detect platform and use provided binary"
+
+#. TODO - error message on trying to download models when already done
+msgid "All binaries downloaded"
+msgstr "All available binaries already downloaded"
diff --git a/katrain/i18n/locales/en/LC_MESSAGES/katrain.mo b/katrain/i18n/locales/en/LC_MESSAGES/katrain.mo
index b39c496..e74eca9 100644
Binary files a/katrain/i18n/locales/en/LC_MESSAGES/katrain.mo and b/katrain/i18n/locales/en/LC_MESSAGES/katrain.mo differ
diff --git a/katrain/i18n/locales/en/LC_MESSAGES/katrain.po b/katrain/i18n/locales/en/LC_MESSAGES/katrain.po
index f12ee12..a037d63 100644
--- a/katrain/i18n/locales/en/LC_MESSAGES/katrain.po
+++ b/katrain/i18n/locales/en/LC_MESSAGES/katrain.po
@@ -416,8 +416,8 @@ msgstr "Override Engine Command"
 
 msgid "engine:altcommand:hint"
 msgstr ""
-"Full command used to start the engine, for e.g. using plink to connect to a "
-"remote engine. All other model options will be ignored."
+"Full command used to start the engine. All other model options will be "
+"ignored."
 
 msgid "engine:max_visits"
 msgstr "Maximum number of visits in analysis"
@@ -636,14 +636,30 @@ msgstr "Estimated Strength"
 msgid "download models button"
 msgstr "Download Models"
 
+#. button in general settings for downloading models
+msgid "download katago button"
+msgstr "Download KataGo versions"
+
 #. shown on on the model select dropdown
 msgid "models available"
 msgstr "{num} available model(s) found"
 
+#. shown on on the katago binary select dropdown
+msgid "default katago option"
+msgstr "Detect platform and use provided binary"
+
+#. shown on on the model select dropdown
+msgid "katago binaries available"
+msgstr "{num} available binaries found"
+
 #. error message on trying to download models when already done
 msgid "All models downloaded"
 msgstr "All available models already downloaded"
 
+#. error message on trying to download models when already done
+msgid "All binaries downloaded"
+msgstr "All available binaries already downloaded"
+
 #. label in little popup for analyzing entire game
 msgid "reanalyze max visits"
 msgstr "Number of visits per move"
diff --git a/katrain/i18n/locales/es/LC_MESSAGES/katrain.mo b/katrain/i18n/locales/es/LC_MESSAGES/katrain.mo
index ed214c1..6837415 100644
Binary files a/katrain/i18n/locales/es/LC_MESSAGES/katrain.mo and b/katrain/i18n/locales/es/LC_MESSAGES/katrain.mo differ
diff --git a/katrain/i18n/locales/es/LC_MESSAGES/katrain.po b/katrain/i18n/locales/es/LC_MESSAGES/katrain.po
index f4f7bde..8f67996 100644
--- a/katrain/i18n/locales/es/LC_MESSAGES/katrain.po
+++ b/katrain/i18n/locales/es/LC_MESSAGES/katrain.po
@@ -657,3 +657,19 @@ msgstr ""
 #. TODO
 msgid "engine:altcommand"
 msgstr "Override Engine Command"
+
+#. TODO - button in general settings for downloading models
+msgid "download katago button"
+msgstr "Download KataGo versions"
+
+#. TODO - shown on on the model select dropdown
+msgid "katago binaries available"
+msgstr "{num} available binaries found"
+
+#. TODO - shown on on the katago binary select dropdown
+msgid "default katago option"
+msgstr "Detect platform and use provided binary"
+
+#. TODO - error message on trying to download models when already done
+msgid "All binaries downloaded"
+msgstr "All available binaries already downloaded"
diff --git a/katrain/i18n/locales/fr/LC_MESSAGES/katrain.mo b/katrain/i18n/locales/fr/LC_MESSAGES/katrain.mo
index c9788cf..c4c9d8e 100644
Binary files a/katrain/i18n/locales/fr/LC_MESSAGES/katrain.mo and b/katrain/i18n/locales/fr/LC_MESSAGES/katrain.mo differ
diff --git a/katrain/i18n/locales/fr/LC_MESSAGES/katrain.po b/katrain/i18n/locales/fr/LC_MESSAGES/katrain.po
index 1b13684..63e2398 100644
--- a/katrain/i18n/locales/fr/LC_MESSAGES/katrain.po
+++ b/katrain/i18n/locales/fr/LC_MESSAGES/katrain.po
@@ -692,9 +692,25 @@ msgstr "Colour Theme"
 #. TODO
 msgid "engine:altcommand:hint"
 msgstr ""
-"Full command used to start the engine, for e.g. using plink to connect to a "
-"remote engine. All other model options will be ignored."
+"Full command used to start the engine. All other model options will be "
+"ignored."
 
 #. TODO
 msgid "engine:altcommand"
 msgstr "Override Engine Command"
+
+#. TODO - button in general settings for downloading models
+msgid "download katago button"
+msgstr "Download KataGo versions"
+
+#. TODO - shown on on the model select dropdown
+msgid "katago binaries available"
+msgstr "{num} available binaries found"
+
+#. TODO - shown on on the katago binary select dropdown
+msgid "default katago option"
+msgstr "Detect platform and use provided binary"
+
+#. TODO - error message on trying to download models when already done
+msgid "All binaries downloaded"
+msgstr "All available binaries already downloaded"
diff --git a/katrain/i18n/locales/jp/LC_MESSAGES/katrain.mo b/katrain/i18n/locales/jp/LC_MESSAGES/katrain.mo
index d8bd697..137636b 100644
Binary files a/katrain/i18n/locales/jp/LC_MESSAGES/katrain.mo and b/katrain/i18n/locales/jp/LC_MESSAGES/katrain.mo differ
diff --git a/katrain/i18n/locales/jp/LC_MESSAGES/katrain.po b/katrain/i18n/locales/jp/LC_MESSAGES/katrain.po
index 0a8fd2a..1b54ec4 100644
--- a/katrain/i18n/locales/jp/LC_MESSAGES/katrain.po
+++ b/katrain/i18n/locales/jp/LC_MESSAGES/katrain.po
@@ -640,3 +640,19 @@ msgstr "エンジン起動コマンド全体 (plinkでリモートエンジン
 
 msgid "engine:altcommand"
 msgstr "エンジンコマンドの上書き"
+
+#. TODO - button in general settings for downloading models
+msgid "download katago button"
+msgstr "Download KataGo versions"
+
+#. TODO - shown on on the model select dropdown
+msgid "katago binaries available"
+msgstr "{num} available binaries found"
+
+#. TODO - shown on on the katago binary select dropdown
+msgid "default katago option"
+msgstr "Detect platform and use provided binary"
+
+#. TODO - error message on trying to download models when already done
+msgid "All binaries downloaded"
+msgstr "All available binaries already downloaded"
diff --git a/katrain/i18n/locales/ko/LC_MESSAGES/katrain.mo b/katrain/i18n/locales/ko/LC_MESSAGES/katrain.mo
index d00fe44..9e1d668 100644
Binary files a/katrain/i18n/locales/ko/LC_MESSAGES/katrain.mo and b/katrain/i18n/locales/ko/LC_MESSAGES/katrain.mo differ
diff --git a/katrain/i18n/locales/ko/LC_MESSAGES/katrain.po b/katrain/i18n/locales/ko/LC_MESSAGES/katrain.po
index 365249d..4c94584 100644
--- a/katrain/i18n/locales/ko/LC_MESSAGES/katrain.po
+++ b/katrain/i18n/locales/ko/LC_MESSAGES/katrain.po
@@ -627,9 +627,25 @@ msgstr "Colour Theme"
 #. TODO
 msgid "engine:altcommand:hint"
 msgstr ""
-"Full command used to start the engine, for e.g. using plink to connect to a "
-"remote engine. All other model options will be ignored."
+"Full command used to start the engine. All other model options will be "
+"ignored."
 
 #. TODO
 msgid "engine:altcommand"
 msgstr "Override Engine Command"
+
+#. TODO - button in general settings for downloading models
+msgid "download katago button"
+msgstr "Download KataGo versions"
+
+#. TODO - shown on on the model select dropdown
+msgid "katago binaries available"
+msgstr "{num} available binaries found"
+
+#. TODO - shown on on the katago binary select dropdown
+msgid "default katago option"
+msgstr "Detect platform and use provided binary"
+
+#. TODO - error message on trying to download models when already done
+msgid "All binaries downloaded"
+msgstr "All available binaries already downloaded"
diff --git a/katrain/i18n/locales/ru/LC_MESSAGES/katrain.mo b/katrain/i18n/locales/ru/LC_MESSAGES/katrain.mo
index 65e1612..4f6d8af 100644
Binary files a/katrain/i18n/locales/ru/LC_MESSAGES/katrain.mo and b/katrain/i18n/locales/ru/LC_MESSAGES/katrain.mo differ
diff --git a/katrain/i18n/locales/ru/LC_MESSAGES/katrain.po b/katrain/i18n/locales/ru/LC_MESSAGES/katrain.po
index 951ca3a..769ac1c 100644
--- a/katrain/i18n/locales/ru/LC_MESSAGES/katrain.po
+++ b/katrain/i18n/locales/ru/LC_MESSAGES/katrain.po
@@ -652,9 +652,25 @@ msgstr "Colour Theme"
 #. TODO
 msgid "engine:altcommand:hint"
 msgstr ""
-"Full command used to start the engine, for e.g. using plink to connect to a "
-"remote engine. All other model options will be ignored."
+"Full command used to start the engine. All other model options will be "
+"ignored."
 
 #. TODO
 msgid "engine:altcommand"
 msgstr "Override Engine Command"
+
+#. TODO - button in general settings for downloading models
+msgid "download katago button"
+msgstr "Download KataGo versions"
+
+#. TODO - shown on on the model select dropdown
+msgid "katago binaries available"
+msgstr "{num} available binaries found"
+
+#. TODO - shown on on the katago binary select dropdown
+msgid "default katago option"
+msgstr "Detect platform and use provided binary"
+
+#. TODO - error message on trying to download models when already done
+msgid "All binaries downloaded"
+msgstr "All available binaries already downloaded"
diff --git a/katrain/popups.kv b/katrain/popups.kv
index 9f18548..e1b0f04 100644
--- a/katrain/popups.kv
+++ b/katrain/popups.kv
@@ -80,23 +80,45 @@
 <ConfigPopup>:
     configfile: configfile
     model_path: model_path
+    katago_path: katago_path
     model_files: model_files
+    katago_files: katago_files
     download_progress_box: download_progress_box
+    katago_download_progress_box: katago_download_progress_box
     DescriptionLabel:
         text: i18n._('katago settings')
         font_size: DESC_FONT_SIZE * 1.5
     GridLayout:
         cols: 2
-        rows: 5
-        size_hint: 1,5
+        rows: 6
+        size_hint: 1,6
         spacing: CP_SPACING
         DescriptionLabel:
             text: i18n._("engine:katago")
             size_hint: 0.33, 1
         AnchorLayout:
             LabelledPathInput:
+                id: katago_path
                 input_property: "engine/katago"
                 hint_text: i18n._("engine:katago:hint")
+                on_text: root.check_katas()
+        AnchorLayout:
+            size_hint: 0.33, 1
+            AutoSizedRoundedRectangleButton:
+                text: i18n._("download katago button")
+                on_press: root.download_katas()
+                size_hint_y: 0.7
+        AnchorLayout:
+            Spinner:
+                id: katago_files
+                text: ''
+                on_text:
+                    if self.text and self.text == self.values[1]: katago_path.text = ''
+                    elif self.text and self.text != self.values[0]: katago_path.text = args[1]
+                size_hint_y: 0.7
+                sync_height_frac: 1.0
+                -font_size: self.height * 0.5
+                -background_color: [*[c*255/88 for c in BOX_BACKGROUND_COLOR[:3]], 1] # compensate for texture
         DescriptionLabel:
             text: i18n._("engine:config")
             size_hint: 0.33, 1
@@ -207,9 +229,13 @@
         orientation: 'horizontal'
         size_hint: 1,1.5
         MDBoxLayout:
-            size_hint_x: 4 if self.children else 0.0001
+            size_hint_x: 3.5 if self.children else 0.0001
             orientation: 'vertical'
             id: download_progress_box
+        MDBoxLayout:
+            size_hint_x: 3.5 if self.children else 0.0001
+            orientation: 'vertical'
+            id: katago_download_progress_box
         AnchorLayout:
             AutoSizedRoundedRectangleButton:
                 padding_x: 15