Pacing in Puzzle Games on the Example of Portal 2
Portal on Steam
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Amazon.com: Portal 2 - Xbox 360 : Video Games
The Entropy Centre' is a first-person puzzle game with heavy 'Portal' vibes
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Portal Chapter 1 (Puzzles 00 – 03) - Gamer Walkthroughs
Puzzle Creator - Portal Wiki
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Portal Chapter 7 (Puzzle 15) - Gamer Walkthroughs
Portal/Walkthrough — StrategyWiki, the video game walkthrough and strategy guide wiki
Portal Chapter 7 (Puzzle 15) - Gamer Walkthroughs
Portal 2 Reviews, Pros and Cons | TechSpot
Portal Chapter 5 (Puzzle 13) - Gamer Walkthroughs
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Review: Portal 2 - Slant Magazine
Portal/Chamber 00 — StrategyWiki, the video game walkthrough and strategy guide wiki
Well, That's One Way To Complete That Portal 2 Puzzle... - Game Informer
Portal 2 puzzle editor DLC warps to PC and Mac May 8 | Engadget
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Pacing in Puzzle Games on the Example of Portal 2
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Best games like Portal and Portal 2 for mind-bending puzzles | GamesRadar+
![Portal [PC] – Review | My Brain on Games](https://mybrainongames.files.wordpress.com/2015/07/portal-puzzles.jpg "Portal [PC] – Review | My Brain on Games")