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£3.75 - http://store.steampowered.com/app/9860/
Be Riddick, the most ruthless criminal in the universe. In his latest chronicle, Riddick has been captured by The Dark Athena, a mercenary ship hell-bent on eliminating him once and for all. Using his intense hand-to-hand combat skills, explosive firepower, and lethal stealth, Riddick must shut down the maniacal Captain Revas and her deadly crew. When Riddick steps into the darkness, no one is safe.
Before battling the Necromongers on Helion Prime — even before the crash landing of the Hunter-Gratzner on a deserted planet in Pitch Black — Riddick stalked his enemies across the universe. Play the award-winning Escape from Butcher Bay campaign, which has been re-mastered with top of the line graphics specifically for next-gen systems.
The new Assault on Dark Athena campaign takes place immediately following the events on Butcher Bay, as now Riddick must use his well-honed skills to evade capture by the forces of Captain Revas, and put an end to her evil plans once and for all.
With Chronicles of Riddick: Assault on Dark Athena you get two complete games!