<i>Black Mesa</i>, A fan remake of the original <i>Half Life</i> in the Source engine, was originally released as a mod before transitioning to a commercial game in its own right with the support of Valve Software. Later stages are still in development. | <i>Black Mesa</i>, A fan remake of the original <i>Half Life</i> in the Source engine, was originally released as a mod before transitioning to a commercial game in its own right with the support of Valve Software. Later stages are still in development. |