How about Supreme Snowboarding/Boarder Zone? The PC version had fairly low minimum requirements (300MHz PII, 32MB RAM, 3D acceleration -- OpenGL was supported), and had some staggering graphics for its time. It was published by Infogrames, so Atari should have control of it now...I think...
I have my GP32 (not 2X) modded to run on rechargable CR-V3s. It doesn't outperform NiMH cells of equal mAh rating (mine's 1800mAh; I think 2000mAh+ is available now). Recharge time is about four hours; one battery+charger costs $30 or so.
For the less brazen, it's possible to cut a few millimeters from the center of a round toothpick and stuff it in the plastic shaft, which maintains the 'unscrewed*' effect all the time. Cutting away the shaft has the benefit of reduced throw distance/dead zone, though.
*I know there isn't a screw.
Anyone unable to get this working? My GP2X always locks up on exit, even when underclocking/leaving the clock unchanged.
Here are the only things I've done that could be the problem:
-Installed firmware v1.0.1 + .gpu patch
-Installed vimacs' mono->stereo autopatch
-Done the foam-layer removal...
You have the v1.0.1 Utility patch installed (mplayer update and stuff), but not the actual kernel. Format to FAT32 if you haven't already and try again; if that doesn't work, your card may not be supported.