Amazon.com: Matricom G-Pad XYBA Wireless Rechargeable Bluetooth Pro Game Pad Joystick Controller (Samsung Gear VR, PC, PS3, and G-Box Compatible!) : Video Games
Portal 2 PC controller support | ResetEra
You Can Now Play Portal 2 Local Co-op On PC | KAKUCHOPUREI.COM
Steam Community :: Guide :: Create a Portal 2 mod
Fixing the Portal 2 issue re: steam controller camera sensitivity - YouTube
Portal 2 Patch Tweaks Co-op, Adds Split-Screen Via Remote Play
Steam Community :: Guide :: How to play Local Co-op with Controller + Keyboard
Portal 2 - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game
How to make the most of the Steam Controller: a comprehensive guide: Page 4 | PC Gamer
50d95dd96f32979675635caf9b003dc9f26c066f.png
Portal 2 PC controller support | ResetEra
How do I do local coop with one controller and keyboard/mouse? : r/Portal
Amazon.com: Matricom G-Pad XYBA Wireless Rechargeable Bluetooth Pro Game Pad Joystick Controller (Samsung Gear VR, PC, PS3, and G-Box Compatible!) : Video Games
You Can Now Play Portal 2 Local Co-op On PC | KAKUCHOPUREI.COM