Community-Made Mods: Half-Life 2

Action, Adventure, Indie - Released: Mar 10, 2016

Singleplayer science fiction game focusing on interacting and communicating with alien species. You can either fight or try to find a way to communicate.

Action, Free to Play, Indie - Released: Jan 2016

Wilson Chronicles lets you return to Black Mesa !

Action, Adventure, Free to Play - Released: Mar 27, 2015

A completely free and extensive community-developed update for Half-Life 2 featuring beautiful lighting, countless bug fixes, and a brand new Community Commentary Mode. With Half-Life 2: Update, there’s never been a better time to revisit City 17.

Action - Released: Mar 11, 2009

Zombie Master is a multiplayer Half-Life 2 modification, centered around a zombie-apocalypse, which throws all but one player in the shoes of human survivors.

Action, Free to Play, Strategy - Released: Jul 28, 2008

Team based strategy / shooter mix, with customizable tanks, researchable upgrades and dynamically placed buildings. No two matches are the same.

Sports - Released: Jan 1, 2002

International Online Soccer: Source is a third-person online multi-player soccer mod. The focus of the mod is to create the ultimate online teamplay soccer experience.