» A remixed soundtrack including enhanced music from the original along with all new ones. » Level Design tweaks to utilize the advanced physics engine introduced in Half Life 2. » New voices, sounds, and visuals to truly immerse you in the Black Mesa incident. » Multiplayer, including Deathmatch and Team Deathmatch with all the original levels fleshed out.
» Models that push the limits of the Source Engine. » Complete re-creation of all 12 chapters from the original. A list of features planned for the final release: Operation Black Mesa is a total Source conversion of Half Life: Opposing Force.