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Valve has added split-screen to Portal 2's standard co-op multiplayer mode, the company announced today in a post on Steam's website.
The game's PC version is also now available for play in Steam's Big Picture mode, allowing players to boot up Portal 2 on their televisions.
The update released today also fixes two bugs, including one that halts player movement after hitting the "quick ping" button to call a partner's attention to something, and a glitch preventing players from exiting the "Robot Enrichment" customization area or "Create Test Chambers" menus when using an Xbox 360 controller.
