N is an awesome game by metanet software. You play as N a ninja who can wall jump, wall slide, run, and die at the slightest of touch by his enemies. Its a platform game that is really really fun. freeware on pc (http://www.thewayoftheninja.org/n.html) and available for download on Xbox360 and purchase for PSP. The basis is to open the door and get through it without dying. It includes an in-game map editor and demo recorder but you can find better ones at their forums.