My personal favourite old-school game.

Lemmings is a classic! I used to rent it all the time because it had so many levels. I was always looking for games with a massive amount of levels. Of course, Lemmings was fun anyway, and I always hated it when people would play it just so they could kill all the lemmings in intersting ways. What jerks!

Have you played any of the sequels? Lemmings II: The Tribes is very good, probably even better than the original.

I love lemmings. What's different about tribes?

Tribes has a ton of new skills, andit has an actual plotline. There are Lemmings tribes, and just like in the original, you have to get them back to their homes. Each tribe has their own landscape. For more info, click here: http://www.mobygames.com/game/sheet/gameId,1603/

I've got Lemmings for SNES and GBC. That game was hard, but fun. I don't play it too often, though. I'm not very good at it. But it's still a cool game.