Thanks for giving it a try! Unfortunately the game does use around 5-6 gigs of video memory which is likely why you ran into the issue (I assume you have either a 4 or 6 gig card). This is mainly because of the sprite sets for the player and enemies, as those are pretty high resolution, decently high frame rate, and are generated for 8 different directions, so they end up using a lot of video memory to keep that all loaded. Again I'm sorry you couldn't play it, I wish I had more time to optimize it :(