Half-Life Opposing Force PC Big Box Sierra Gearbox 1999 Complete CD Key Manual

Half-Life: Opposing Force is the official expansion for Valve's Half-Life, developed by Gearbox Software and released by Sierra Studios in 1999. Instead of Gordon Freeman, you play Corporal Adrian Shephard, one of the HECU marines sent into Black Mesa to silence the facility, retelling the incident from the other side of the firefight with new weapons, new enemies, a full new single player campaign and new multiplayer content. It is widely considered one of the best expansion packs ever made. ESRB Mature 17+. Note: Opposing Force requires Half-Life or the Half-Life Game of the Year Edition to play.

What's Included

- Original big box (gatefold)

- Game CD in jewel case, with its CD key on the case insert

- Half-Life Opposing Force manual

Format and Compatibility: Big box PC release for Windows 95/98/NT, CD-ROM.

A complete big box copy of one of the best expansion packs ever made — a standout addition to any Half-Life or PC big box collection.

Protect your collection: acrylic display protectors in 3 sizes, Regular, Wide Extra Deep and Small, are available in our eBay store.

Shipping with Care

Every item is carefully packed with protective padding in a sturdy box to make sure it arrives safely. Big boxes are protected on all sides to prevent crushing or corner damage during transit. Combined shipping is available for multiple purchases, just send me a message before paying.