For me it was the Game Gear, I had so much fun playing that. Although I did have to fashion my own external battery pack for it.

Baulder's Gate Dark Alliance, but it's not a childhood tradition as I'm far too old for that. My wife and I play it every new years eve.

I would throw Gunstar Heros on the Mega Drive/Genesis into the mix, especially if you are going to play two player. If you have any spare time after that give The Revenge of Shinobi a go too.

I was looking forward to this game when it was announced, all those characters to unlock and great levels to play. When I finally got to play it thanks to Game Pass I was surprised by how dull and lifeless it felt. It was a tedious grind and I didn't get very far before giving up on it.