@Ace66062 @ceruds @JapanAnon @BackupHitter Same, but my point is that that list answers the question of online requirement, ie. the most jewish of DRMs. The game itself isn't out to fuck you around, it just wants to let you have fun.
In xonotic's case, doesn't it support bots? Not that bots will make the game, but, again, it's going to do its best to let you enjoy it your way.