I'm saying this because Age of Empires is used as an example of what can NOT be ported. The reason is that those applications are closed source, therefore they cannot be adapted (ported) to the GP2X platform.
One can always do a remake, but that takes a lot of work.
As for sam and max and every lucasarts games, see the post above =D
gp2x can run only Sam'n'Max Hit the Road, the 2d game.
Sam'n'Max in episodes are 3d and doesn't work with the scumm engine of course (the latest game that used scumm was the curse of monkey island, from Grim Fadango Lucas used a 3d engine with Lua script support).