The game of life, aka nothing.
Awaiting some more Famicom, PS1 Goemon trilogy (they came in a bundle, I already own of them), a PS2 Soul Caliburing experience of the third kind, and some Game Boy titles to arrive off Ebay. I will hit the 1,345 game mark by the time they all arrive.
For sure the Game Boy games I want to play in my Super Game Boy, both Momotaro Dengeki 1, and Momotaro Dengeki 2, and the third PS1 Goemon game, aka Oedo Daikaiten (this one will have one bit that WILL trip me up, getting a pass to leave town, and it's a puzzle with a ghost town that is tricky to know what to do as there is no English FAQ for the game).