Battletoads (NES) I have a few but I want to call out this as it gets memed for it's difficulty - and it was difficult - but not "can't pass level 3 speeder bikes" difficult!

The game looked great, had extremely tight controls and had an insane amount of level variety! Each of the 12 levels was unique, from platforming, rappelling, biking, surfing, flying, racing, swimming, and even weird ass wall clingers! And they all played well - It also had the most banging pause music ever haha!