I wonder if XBOX360 Gamepads/Joysticks are somehowdifferent there, because Prometheon actualy support Joysticks...
Those should work! I have only tried with a few different gamepads and there is for the moment no option to change which buttons are used. So all gamepads and joysticks might not work. But 360-controllers have been confirmed to work fine.
I think its Bennu, as being interpreted, and the alpha effects. Could be inefficienties in programming (maybe they used 32 bit fb?) as well, but that's hard to judge. As I assume the engine is based on "Nether dimesisonal runner" and that game runs great on my wiz.
It's probably a bit of everything. There are loads of effects in certain scenes, everything from particles and explosions to dynamic shadows and colouring-effects. It uses 16 bit though, so 32 bit fb is not the problem.
I tried to write it as optimized as possible and had the goal of making it work without problems on my netbook, which it does. But I guess the netbook is a lot faster than the Pandora after all.
Btw, the engine has been upgraded quite a lot from Runner, but some stuff is the same.