Physical hardware is best (grab a used Nokia E71 or Sony Ericsson K800). But emulators like (Android) or KEmulator (PC) let you play these .jar files in their original 240x320 glory. Look for "Gameloft 240x320 Collection" on archive sites.
(2006)
games reached their graphical and gameplay peak on devices like the Nokia N95 and Sony Ericsson K800i java game 240x320 gameloft best
These titles are widely considered the pinnacle of 240x320 mobile gaming due to their advanced mechanics and high production value: Physical hardware is best (grab a used Nokia