Lego Cuusoo is a website where you can present your own ideas and concepts for Lego, and gain some attention. If enough attention is amassed it may even get massproduced and sold in stores. That's how Lego Minecraft came about after all.
A user who calls himself czar has shown off his latest creation based on the popular Castle Crashers game. Check out the images below, and if you approve head over to the website and show your support.