diff --git a/README.md b/README.md
index b66411f..6689326 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,14 @@ Source: <https://github.com/blockattack/blockattack-game>
 ## Screen shot
 ![Block Attack - Rise of the Blocks](https://blockattack.github.io/images/screenshots/blockattack-2.3.0-3.png "Screen shot")
 
+## Supported OS
+
+### Linux
+Recent Linux version. Target is all current Ubuntu Desktop LTS versions (up to 5 years).
+
+### Windoes
+Target is all official supported versions of windows for x86-64 that allows manually installed software. Currently Windows 10+.
+
 ## Dependencies
 * A version of g++ with C++11 support. Tested on g++-4.9
 * libSDL2
diff --git a/source/misc/standalone/README.txt b/source/misc/standalone/README.txt
index 03789d0..1c2a68d 100644
--- a/source/misc/standalone/README.txt
+++ b/source/misc/standalone/README.txt
@@ -2,8 +2,8 @@ Block Attack - Rise of the Blocks - Linux build
 
 This is the standalone version. It is precompiled and includes the necessary libraries to run.
 
-Both a 32 bit and 64 bit version is provided.
-It has been tested on Ubuntu 20.04 and Fedora 40
+Only the 64 bit version is provided.
+It has been tested on Ubuntu 18.04 and Fedora 40
 Some systems might require the game to be launched from the command line.
 PulseAudio is required for sound.