Here's a trailer for the XBLA and PSN game Dead Space Ignition which is available for free with pre-orders of Dead Space 2 from GameStation & GAME in the UK, or £4.99 otherwise. Dead Space Ignition is the prologue to Dead Space 2 which is due at the end of January 2011.

Dead Space Ignition combines an interactive comic-style story with three unique hacking games; Hardware Crack, Trace Route and System Override. Each game offers a fun arcade experience that will challenge players with puzzles and twitch gameplay. Dead Space Ignition features a unique "Choose Your Own Adventure" type narrative, allowing players to survive the initial Necromorph outbreak on the Sprawl in multiple ways, with four different endings. The story was written by Antony Johnston, the award-winning, New York Times bestselling author of comics, graphic novels, video games and books including Wasteland, and Daredevil.