Steam News announces a free week is underway for Sanctum 2, as they also offer an 85%-off sale on the Sanctum 2 Complete Pack. The original Sanctum is also playable for free all week, and is also on sale. Here's word:

Play Sanctum 2 for FREE starting now through Sunday at 1PM Pacific Time. You can also pickup Sanctum 2 Complete Pack at 85% off the regular price!*

If you already have Steam installed, click here to install or play Sanctum 2. If you don't have Steam, you can download it here.

The original Sanctum is also running a Free Week, with discounts on the game and DLC. Pick up the Sanctum Collection for 85% off all week!

*Offer ends Monday at 10AM Pacific Time