When I make the artwork for my freeware game, "Warrior Robot," I might hide a lemming in one of the pictures as an Easter egg. Keyword being "might." Even if I did, it would be a very small lemming. An interesting idea might be making a picture of the Cyber Wastelands (where you end up after the bad guys put what is jokingly Windows, which will probably be revealed at a later point in the game). The computer that runs the teleporter BSOD's! There's a room there with a lot of computers, and I could make one that looks like someone's playing lemmings. Could, anyways. Now that I think of it, I'll probably make it without that, then post an edit of that here. Could take a while to get around to, though.