Steam news announces the release of Space Hulk Ascension Edition, saying the standalone Space Hulk expansion is 10% off for the next week. Here's word:

Set in the isolated corridors and tomb-like chambers of ancient vessels lost in the graveyard of space, players lead a small force of fearless Space Marine Terminators in a ferocious fight for survival against hordes of predatory, alien Genestealers.

The standalone sequel to Space Hulk brings an all new and improved single-player experience for the turn-based strategy game.