Summary Portal 2's dedicated community creates maps & mods thanks to Valve's modding support. Popular user-generated content includes single-player and co-op maps for varying challenges.

They're also giving all existing owners of Portal 2 a coupon to get a second copy at $5, perfect for gifting to a friend for the selfish purpose of getting yourself a new co-op partner.

Portal 2: Peer Review includes an additional course for Portal 2 co-op campaign, dubbed "Art Therapy"; as well as Challenge Mode for both single-player or multiplayer campaign, where players can ...

Portal Reloaded, the phenomenal time travel fan game based on Portal 2, now has a co-op mode that enhances the Valve puzzle game even further.

Master "Portal 2" co-op challenges alone, no need for friends. Be a solo game champion.

Split Fiction brings back split-screen co-op, emphasizing teamwork in unpredictable ways. Prominent local co-op games like Snipperclips, Sackboy, Portal 2, and Stardew Valley encourage collaboration.

Portal fans release a new project that brings the Valve puzzle game experience to completely vanilla Minecraft: Java Edition.

Portal 2 Oh look, another Valve game is on the list. This time we’re spotlighting Portal 2, a game that shipped with a fantastic single-player campaign and didn’t need more. Yet, Valve also ...