Hi! I've compiled Powder, an addictive Roguelike designed for the Gameboy Advance and Nintendo DS.
And thanks to a hack we can play it fullscreen at the fullest way possible (640x480). Those are the instructions:
[s]Resize the window to exactly 480px high x 640-800px wide dragging the window's border.[/s] (This step is now done automagically by a script via wmctrl!!)