I'm usually a fan of open source games but rarely do they manage to be actually great. People like giving recommendations like Super Tux Kart that haven't aged well and don't play well. What are some open source games that are legitimately good that I've missed?
Naev - an open world space exploration game. Cruise the galaxy as a bounty hunter, work as a freighter, enlist in the military, or become a pirate! Lots of ship customization and a huge map with lots of factions.