Portal

The Talos Principle

The game prospers not only from immense creativity, but from a devotion to the unsexy fundamentals of great game design. That devotion pays off with a long, unforgettable experience that almost never fails to engage you and has virtually no weak points. It's a game that constantly entices you to see what the next puzzle or story bit has to offer. In that regard, it rarely disappoints, and the experience stays with you long after you finish it.

The Talos Principle