News - Portal 2 Official Blog
Portal 2 : Map Editor Tutorial - YouTube
ARCHIVED) Portal 2 - Change your custom map textures using Puzzle Maker and Hammer Editor - YouTube
Portal 2 Puzzle Maker: Flip Panel - Valve Developer Community
Portal 2 puzzle editor DLC warps to PC and Mac May 8 | Engadget
Portal 2 Puzzle Creator in internal beta testing now, will use Steam Workshop | PC Gamer
Portal 2 Puzzle Creator : How to Make a Good Test Chamber : 3 Steps - Instructables
Steam Community :: Guide :: Using the Portal 2 Puzzle Builder
The best Portal 2 mods | Rock Paper Shotgun
Steam Community :: Guide :: Using the Portal 2 Puzzle Builder
Portal 2 Level Design: Creating Puzzles to Challenge Your Players
Steam Community :: Guide :: Using the Portal 2 Puzzle Builder
Portal 2 Perpetual Testing Initiative is Now Available - Just Push Start
Portal 2 Puzzle Maker/Getting Started - Valve Developer Community
Portal 2 - The Cutting Room Floor
Thinking With Portals: Making A Portal 2 Test Chamber - Game Informer
:format(jpeg)/cdn.vox-cdn.com/uploads/chorus_image/image/1953193/portal_2_pti.0.jpg "Portal 2' puzzle maker now supports design for two-player co-op maps - Polygon")
Portal 2' puzzle maker now supports design for two-player co-op maps - Polygon
Prepare for bigger Portal 2 modded levels with a new update removing limits | GamingOnLinux
Catwalk | Portal 2 PTI Wiki | Fandom
Puzzle Creator - Portal Wiki
Portal 2 Level Creator Available Now | The Mary Sue
Portal 2 puzzle editor looks gorgeous | The Wanderer
Puzzle Creator - Portal Wiki
Review: Portal 2 Marries Indie Design, Blockbuster Budget | WIRED
