The GP2X, the "spiritual successor" to the GP32.
As far as I'm aware, and I kept a pretty close eye on it at the time, a couple of Commercial/Retail games were planned, the only one's I've seen pictures of were a top-down gta style crime sim and a fantasy action RPG, but they were never released (again AFAIK).
So why did I write "technically", in my previous post? Because you can still get games for it, they are just homebrew/fan made/emulators/ROMs.