Probably my favorite type of game, I've played dozens of them but I'm always looking for something good I might have missed. My personal favorite for the past few years has definitely been Farthest Frontier but theres been a ton of good ones. And if anyone else is looking for recommendations let me what you like and I probably know something that fits.
Dwarf Fortress by a gigantic margin
Also the only good roguelike (no one reply to this, I already made up my mind)
yeah, Adventurer mode is really cool, part of how crazy and ambitious DF is