This is probably mostly related to strategy games, but honestly any will do. The only thing I can think of is Stellaris with the communist mod, which is cool, but it’s outdated to heck at this point and I’d like to hear more options =)
Civ 6, communism is powerful there.
Victoria 2, getting to communism normally is pretty hard, but you can console command it on day 1.
CK3, there is mod with pretty good looking Lenin and Stalin as playable characters, unfortunately the rest is cringy because of game limitations with communism as religion and unmodable governments, so still feudalism
