It’s a Linux device running on a 550 MHz ARM 9, with 128 MB of RAM and 2 GB of Flash ... it seems, and the Leapster GS is powerful enough to play all those Nintendo, Game Boy and even MAME ...

[mac2612] has developed a custom retroarch-based firmware for the Leapster GS and LeapPad2. (via Bringus Studios on YouTube) We covered Linux on the Leapster before, but Retroleap seems better ...