Hey, I just thought I'd let you guys know that Minecraft will soon be entering beta (on Dec. 20th), and when that happens, its price will go up. Buyers who purchase the game before the beta starts will also receive all future expansion at no extra charge.
It's not really a roguelike, but it has a lot of roguelike elements, such as its impressive randomly generated worlds and a large emphasis on clever item use. I believe the developer has also said that he may add a permadeath option to the game at some point.