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「 Home 」
「 Classic Offensive 」
「 CS:Legacy 」
「 CSGO after CS2 」
「 Aliens 」
1) Download "csgo_legacy" from CS2 beta branches.
2*) Replace the first line in "C:\Program Files (x86)\Steam\steamapps\common\Counter-Strike Global Offensive\csgo\steam.inf" with "ClientVersion=2000258".
3**) Add "C:\Program Files (x86)\Steam\steamapps\common\Counter-Strike Global Offensive\csgo.exe" as a Non-Steam game.
4**) Add "-steam" to the launch options.
* - Fixes connection to CSGO Network
** - Optional for convenience.
I am not associated with Valve. (Obviously, lol.)