Portal 2

Portal 2 launched on April 18, 2011 and received one post-launch content addition: the free "Peer Review" co-op DLC on October 4, 2011, followed by the Perpetual Testing Initiative — a free in-game puzzle maker with Steam Workshop integration — which shipped on May 8, 2012. That puzzle maker update represents the last major content expansion Valve delivered for the game. Since 2012, Valve has continued to issue periodic maintenance patches — fixing security vulnerabilities, improving platform compatibility (including Steam Deck and Linux support), and updating the SDK — but no new story content, levels, or game modes have been added. The most recent updates, in January and February 2025, were purely security and compatibility fixes. The sole DLC listed on the store (the Portal 2 Soundtrack) has been released. There are no unreleased DLC entries, no developer roadmap, and no announcements of upcoming content. The game launched as a complete, narrative-driven product and received its final content in 2012. The ongoing patches reflect Valve's standard maintenance practices for a popular back-catalog title, not an active content development cycle. Portal 2 is a finished game.