Obsidian Conflict is a cooperative multiplayer modification set in the Half-Life 2 universe. It features a large amount of new gameplay features on all-new maps specially designed for the mod with focus on cooperative gameplay, as well as over hundred user-made maps following the same formula. In addition to that, You're able to play through vanilla Half-Life 2 all the way up to Episode 2, as well as experimental support for cooperative Half-Life: Source play.
New citadel-themed arena in the next version of oc_cardwar. This arena features two mounted guns on each side, which humanoid npcs can make use of. The center beam also dissolves all that passes through it, from flying npcs to thrown grenades.