Marvel Entertainment has Guardians of the Galaxy: The Universal Weapon (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for FREE (regularly $4.99) for a limited time.

Join Star-Lord, Rocket, Groot, Gamora and Drax in an all-new adventure– Marvel’s Guardians of the Galaxy: The Universal Weapon! Jump into battle to help the Guardians recover the five pieces of The Universal Weapon before it falls into the hands of the villainous Ronan the Accuser!

Meet the legendary outlaw Star-Lord and his rag-tag crew: Rocket, a gun-toting alien with a quick draw and an even quicker temper; Groot, the tree-like being who packs a punch; Gamora the deadly and enigmatic assassin; and the revenge-driven Drax the Destroyer. Command the Guardians and their allies in gesture-based real-time battles; recruit and upgrade additional heroes, and then unlock and unleash devastating special attacks!