If you couldn’t fathom why Portal 2 popped up in a montage during Sony’s press conference last night, Valve has finally provided an explanation: Portal 2 In Motion, a new DLC pack for Portal 2 on PS3, is set to launch later this year

The content, currently playable on the E3 show-floor, adds the levels originally available for the Razer Hydra controller to the PS3 version of the game. Unlike traditional Portal 2 stages, these allow you to manipulate objects, adapting them to solve new puzzles.