As promised, Black Cat Games released a new patch for Alien Swarm, required to run the Telic Campaign, an unofficial expansion pack that brings eight new, unique missions in the form of a complete campaign. In addition to the maps, Telic expands the Alien Swarm universe with new weapons, extra items, more dangerous enemies, original mission objectives and various modifications to the standard game rules.

Alien Swarm from v1.2 to v1.3 Patch (16.05MB)

Alien Swarm v1.3 Full Install (121.24MB)

Alien Swarm Telic Campaign v1.0 (77.65MB)