- Valve squashes Team Fortress 2 and Portal fan projects after years of leniency Engadget
- After years of supporting mods and fan games, Valve takes action against Team Fortress and Portal fan projects Gamesradar
- That Portal 64 demake we liked so much has been kiboshed by Valve: ‘They have asked me to take the project down,’ creator says PC Gamer
- ‘Save Team Fortress 2’ campaign explodes after Valve DMCAs fan remake PCGamesN
- As Team Fortress 2 and Portal fan games are hit with copyright requests, acclaimed sandbox game dev behind Garry’s Mod says the decision is “hardly surprising” Gamesradar
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