Divis Mortis is the best game of its genre (zombie survival) that I have played. Similar to Babel, you wake up in a medical building, not knowing who you are. Unlike Babel, there are many others in the building with you, and the building is a normal hospital. Or, it WAS a normal hospital.
This game does a good job of portraying the tense scenes associated with zombie survival movies; coming face to face with zombies, trying to find basic necessities, etc. The puzzles definitely feel like part of the game, and not just a bunch of silly exercises to run through.
The game isn't quite as well polished as the very best games on IFDB, but it is obviously well-tested and does a good job. It lasts for a few hours.I recommend it.