Computer, console, phone, tablet: The more devices that can play games the better for gamers.

Gears of War and Unreal Tournament creators Epic Games will bring competitive multiplayer sword-based combat, powered by its Unreal Engine, to the iPhone later this year with slash-em-up Project Sword.

Chair Entertainment's Shadow Complex is due to land on Xbox Live Arcade this summer, a two-dimensional adventure that's unabashedly inspired by Nintendo's Metroid series, only rendered in 3D—pretty much exactly what Metroid and Castlevania fans regularly demand.

It would take more than a double-jump, grappling hook and a screw attack to reach the lofty goal of being a new generation's 2D Metroid or Castlevania. But that's what Shadow Complex could hope to be.

Yes, the lead developer of Shadow Complex entertained the idea of designing a co-op Metroid/Castlevania kind of game. But...

Does Xbox Live Arcade need a game inspired by 2D Metroid? Sure, unless Microsoft plans on buying Nintendo.