Operation Black Mesa is a Half Life 2 modification; the second installment of the award winning Half Life. Utilizing the immense array of features of the Source engine, the Operation Black Mesa team plans to remake Opposing Force in all it's glory in the Source engine. What we plan to do is remake everything from the 3D models to the maps, so that Opposing Force can once again be praised as one of the best expansion packs for any game to date. We here at the Operation Black Mesa team wish to comprise both single-player and multi-player elements into our modification. We may be adding a Capture the flag mode, but don't quite count on it at the moment.

Собственно, на этот раз удивить таким проектом никого не получится, так как на данный момент ведутся работы других идентичных проектов по конвертированию самого Half-Life и Blue Shift на движок Source.