Rock Box provides games on most Ipods, pmp, mobiles device.

Rockbox is an open source firmware for mp3 players, written from scratch. It runs on a wide range of players:


Stable ports
Rockbox runs well on these players, has a complete manual and is supported by the installer:

•Apple: iPod 1g through 5.5g, iPod Mini and iPod Nano 1g
•Archos: Jukebox 5000, 6000, Studio, Recorder, FM Recorder, Recorder V2 and Ondio
•Cowon: iAudio X5, X5V, X5L, M5, M5L, M3 and M3L
•iriver: iHP100 series, H100 series, H300 series and H10 series
•Olympus: M:Robe 100
•Packard Bell: Vibe 500
•SanDisk: Sansa c200 series (not v2), e200 series (all models), and Fuze v1 (not v2)
•Toshiba: Gigabeat X and F series
Unstable ports
Rockbox runs on these players, but is incomplete, less usable or has problems that limit it to advanced users:

•Apple: iPod Nano 2g
•Cowon: D2
•Olympus: M:Robe 500
•Samsung: YH-820, YH-920 and YH-925
•SanDisk: Sansa Clip (all versions) and Sansa Fuze v2
•Toshiba: Gigabeat S


Source: ROCK BOX GAMES