PC (Microsoft Windows)July 19, 2016
Released ✓ 
RELEASES · DEALS · SUBSCRIPTIONS
Portal 2: And the Abyss Gazes Back Part 1
Waking up on the wrong side of the bed is the least of your worries when being plunged to the bottom of Aperture Science's "bottomless" pits.
Puzzle
Game modes
Single player
Player perspectives
First person