Anyone else really like The Talos Principle? It's one of my favourite recent games.
Great puzzles, interesting story and themes that aren't shoved down your throat in cutscenes and the music, environments and VO work perfectly to elicit a genuine creepy feeling of being within a simulation.
The only other game that engrossed me as much in its world was Deus Ex, and after so long I never thought I'd get that feeling again.