Right, right, I know that it looks like just like I bitch about every idea and I really don't want to apologize for it again. I'll make the thing more specific instead.
I'm looking for a game in which people make small servers for small amounts of players and on these play together. It can't be uber-tedious MMO, in which doing anything takes years. I can't use voice chat and I really would preffer it to be more legit than a game like Roblox / Garry's Mod.
I don't know. Maybe there's some single-player-centered game with multiplayer that functions like that? There must be.