There's quite a selection of Flash-based remakes of old LCD handheld video games over at a site helpfully called Handheld Remakes. My favorite is one I never played in LCD form, a simple little game called Judge. It's fight or flight in retro form; the two little guys hold up a number and you have to dodge or attack based on whether your random number is higher than the other guy's. It's pointlessly violent, yet somehow quintessentially democratic. I like it.
Judge [Handheld Remakes]
