Lemmings is done.
I used to love The Incredible Machine from Sierra / Dynamix on the PC, but this game is really a chore compared to that. Even when you know what to do, it's more of a battle against the NES controller and wonky interface. After 10 levels of the game, it's like "I get it, enough already."
Man, if the Incredible Machine were ported to SNES back in the day, that would have rocked ass.