I'll echo Kisaki's sentiments about Epic Yarn's soundtrack, although I haven't played the game yet. Thanks also for tossing in Sim City; I own the game and played it for hours upon hours. I never reached the highest level in that game, even after openly emulating a plan from Nintendo Power, but I managed to get pretty close a few times. And once it became clear that I wouldn't get over the hump yet again, I had fun destroying everything by repeatedly summoning Bowser to destroy everything. Good times, good times...
Oh, and having played the PC version too, I can say that there were very few differences between them, aside from the scenarios and the apparent lack of a Game Over in the Super Nintendo version.