I was just informed of a new release of Doom V8 which is a port of Doom which runs on Game Park 32 which is a Korean handheld game console.
I've released a new version of DoomV7, it is now at a constant 60FPS and you can even set it to be at 80FPS if you want (in fact its 350% faster than the last version). Download it here. If you have problems running Doom2 get this version which is for Multi Firmware.
So if you have a Game Park 32 (and who doesn't?!) then head on over there and grab a copy for yourself.