Well, i'm glad that finally someone are trying to port Sonic Advance from Game Boy Advance to PC and make it look and play better. Demo looks good, but i have a problem with it. For some reason, when i change the size of game's window, it starting to work slow. But, when i resize window by pressing on it's function by mouse, so it would resize itself for a full screen, then it runs normally, without any slowdown. But then there is another problem. While playing, after i get from one act to another, screen just messed up and it starting to show me my desktop instead of the game itself. And even resizing the window doesn't help. And when i press any button, then i can hear the game doing something, but i can't see what, because it continue to show me my desktop screen instead of game screen. So yeah, fix this two problems, add control configuration and normal gamepad support and this will be awsome game.