The game is fairly long and provides little variety across the 50 levels to convince most to go through it all. Even just some more enemies with unique attributes would be nice. But there are only 8 enemies in the game, with the hardest one only appearing in the final 3 levels. Not only that, but if you stack your power-ups, you risk making the game way to easy, where even the kinda annoying situations can be dealt with almost without fail.