Caring, sharing types rejoice: Valve have released a patch which enables two-controller splitscreen play for Portal 2, making it all the easier to give your co-op buddy a purple nurple when they "accidentally" mis-time the placement of an Excursion Funnel. Again.
And you aren't restricted to squinting at a fraction of your desktop monitor, either: the update adds support for Big Picture mode, allowing you to bicker over who gets to hold the Discouragement Redirection Cube in the comfort of your own living room.
All you have to do to activate splitscreen is to press X on the second controller inside the first co-op menu, and then a whole new world of same-screen squabbling is available. We recommend you fuel your newfound fractious fellowship with our recent guide to the top 10 Portal 2 co-op maps .
The patch also fixes a couple of controller support glitches: previously the 'quick ping' button caused the player's movement to stop and it was impossible to exit Robot Enrichment or Create Test Chambers menus using the controller alone. No longer!