Nexus Total War & Original 1.10 Balance are standalone mods for Warzone 2100! Its Open Source (free to play)!
This is an older version of the New Team War Mod (aka. Nexus Total War). It just changes the multiplayer part of the game which is very unstable. If it continue to stop working, then run it with Windows XP mode. Also you can try to start and quit the tutorial. After that, start this mode which you originally wanted.