The recent threads on Ikaruga and Shadow of the Colossus/Ico got me thinking. Some games, like the two above, don't sell particularly well, and seem to fall under most people's radar, but both have very passionate supporters and almost have cult status amongst some gamers. Another one I can think of is Rez, for the PS2. I know we've already had a favourite games thread, but a lot of that was the usual suspects (Zelda, Half-Life, WoW etc) - all good games, but I'm quite interested in the lesser known, non-mainstream games. So, what are your favourite cult games?