Games you'd put on a flash drive

For boredom at school, the library, friends' places, etc. I have a 4 gig one and I've barely used up 200 megs. I put bootfighter (a pretty cool mecha action game), cave story, zsnes and some roms on it. Ideas other than games welcome too.

The n game
I played the shit out of that at school and in the library.

Touhou series. (w/o thbgm.dat they are pretty small)
Project64 with SSB
MAME with some shooters and xmvsf
If sound is available then FoF
And N with my savefile. Can be found at(hidden): (I:\Documents and Settings\*\Application Data\Macromedia\Flash Player\#SharedObjects\*\localhost) (downloaded version)

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