First, let me clear the mess...
open-source video games, mainly, or some freeware games as that's a gray area... look, I'm no tech geek.
(Hard having a hard time getting Amiga 500 and Atari St going despite reading the direction, don't get me going with the 5200.)
I was looking around for likely games, mostly from the Super Tux series, that could be fine on a system like the RG300 or RG350. I tracked down an OPK maker programs... it's not that hard to find. Mostly, 2D platfomers, Puzzle, Racing, and Run and gun are the many I found, 1st hand account, of them being better on console that PC.
Just a thought
---sorry for the repeat---