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Capture The Flag
- “About once every 75 years, the temperature in the peaks over the Black Mesa facility drops to below freezing. The older bunkers there become blanketed with snow and the river becomes covered in ice. For the first time, the pure, white terrain was scarred with the colors of battle as military death squads captured one of the abandoned bunkers in order to stage an assault on the Black Mesa personnel defending another bunker nearby.”
- — Opposing Force CTF Description
- Opposing Force CTF credits (