PlayStation's new Discord integration is a key step for the cross-play dream | Ars Technica
Best games like Portal and Portal 2 for mind-bending puzzles | GamesRadar+
Portal 2 Review - Gamereactor
Portal 2 first game to have cross platform multiplayer
Xbox One vs PS4: The cross-platform games we need
Xbox 360 Cheats - Portal 2 Wiki Guide - IGN
Steam for PS3 Portal 2 detailed - GameSpot
Microsoft Rejected 'Portal 2' Steam Integration, Cross-Platform Play
Portal Companion Collection review - This was a triumph - GAMING TREND
What Does Portal 2 Look Like on Xbox One X Compared to the Xbox 360 Version? - Video | XboxAchievements.com
![Portal 2 [BC] - Xbox 360 | VideoGameX](https://www.videogamex.com/image/cache/catalog/X360/portal2_bc-1000x665w.jpg "Portal 2 [BC] - Xbox 360 | VideoGameX")
Portal 2 [BC] - Xbox 360 | VideoGameX
PC, PS3 Owners Can Play Portal 2 Together | WIRED
Portal 2' now available for PC, Xbox 360, PS3 | Digital Trends
The best cross-platform games for PS5, Xbox Series X and Switch | Tom's Guide
Portal 2 - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game
Multi-Platform - TV Tropes
Portal 2
Co-Optimus - News - Pre-Order Portal 2 and Build Your Own Bots
Portal: Companion Collection - Nintendo Switch is the perfect partner for Valve's classics | Eurogamer.net
Portal 2 - Wikipedia
Portal Companion Collection review - This was a triumph - GAMING TREND
Valve on Portal 2 (part 1)
Portal 2 (Video Game 2011) - IMDb
Portal 2 review | Adventure Gamers
Valve talks Portal 2 on PlayStation 3, Steam on 360 | Ars Technica
