The game I loved as a kid was X-Men on the Sega Genesis. I put so much time into it (when I only got a new game once or twice a year). I thought it was great, but apparently it wasn't.
>The penultimate level contains the game’s masterstroke, both in metanarrative and difficulty, where in order to stop a self-destruct program you are instructed to “RESET THE COMPUTER”, something that can only be done by briefly pressing the physical reset button of your Sega Genesis. If you press it too long—or are playing it on later Sega models like the Nomad or Firecore—you’ll actually reset the game and never see the final level.