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Opposing Force 2 is a single player mod for Half-Life 2 which aims to create an unofficial sequel to the 1999 GoldSrc engine game, Opposing Force.

On June 23, 2014, the creators announced that development has been halted and subsequently released all of the mod's assets onto GitHub in an effort to enable community collaboration on the project.[1][2] One such effort, titled Opposing Force 2: Lost, released as an open beta in January 2018, but it was removed soon after for unknown reasons.


The story takes place in the aftermath of the Seven Hour War as Adrian Shephard. He has to struggle his way with his fellow comrades from the Phoenix Command, with the main objective of erasing a portal rift from Earth.


Opposing Force 2 is an unofficial sequel in which the player takes the role of Adrian Shephard. The game will offer about 20 new weapons, and NPCs with advanced AI, along with a seven-chapter long singleplayer featuring cooperative play and a multiplayer mode. The mod aims to have a faster pace that affects weapons, strategies, and NPCs.


NPCs will include:


Featured weapons are:

  • Pipe Wrench
  • Combat Knife
  • Handheld Barnacle
  • Glock 18
  • Magnum 357
  • SPAS-12
  • H&K SMG II
  • M16A2
  • AR1
  • M40A3 Sniper Rifle
  • Frag Grenade
  • Spore Grenade
  • Vortex Gun
  • C.L.R






  1. Opposing Force 2 development halted on ModDB
  2. OP2 on Github

External links

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