HEATKEYS

Portal: Prelude, the official free Portal modification website. Download the game, discuss in the forums and access a lot of goodies.

YouTube is a place to discover, watch, upload and share videos.

Combine OverWiki is a comprehensive wiki encyclopedia focusing on the Half-Life / Portal universe and its related subjects. Its main purpose is to collect all the available information related to the franchise, such as the games, its expansions and e...

Desura is a digital distribution service for gamers, putting the best games, mods and downloadable content at your fingertips and ready to play.

Vimeo is a respectful community of creative people who are passionate about sharing the videos they make. We provide the best tools and highest quality video in the universe.

Mod DB covers the game development scene across all platforms PC, XBOX, Playstation and Nintendo serving up downloads of the best mods and other indie created content.