It may seem like Sony's PSP is dying, but Tecmo suggests that is actually undying. They recently unveiled Undead Knights -- and now, there's a trailer. The game will mix action, strategy and ... zombies. Starring as an anti-hero, you'll have to add a legion of zombies under your control. With the stinking stench of the undead at your disposal, you'll be able to conquer your enemies.
Four player ad-hoc multiplayer (including co-op) is planned. But, don't expect this too soon -- this one is definitely a late 2009 release.
Gallery: Undead Knights (PSP)