Quoting: eldakingI am currently playing a lot of Northgard with my friends, a reasonably chill RTS. It isn't co-op per se, but we only play it cooperatively - i.e., as a team of 3-4 against a team of AIs (due to: we are a bunch of carebears that don't want to compete with each other and backstab and etc) and it's really fun. The game has a very punishing environment (harsh winters, neutral factions, kraken attacks, etc) so it doesn't get boring by not having human opponents.