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About Half-Life: Opposing Force
Half-Life: Opposing Force is a free shooter that runs in your browser, with no download and no sign-up. Good aim and positioning matter more than anything. Developed by Gearbox Software / Valve.
Game info
- Category
- Shooter
- Price
- Free
- Download
- None, plays in your browser
- Game host
- ubghyper.github.io
The game runs from ubghyper.github.io. Any ads shown inside the game belong to that host, not to 20-0.
Half-Life: Opposing Force FAQ
Is Half-Life: Opposing Force free to play?
Yes. Half-Life: Opposing Force is free to play online on 20-0 with no download and no sign-up.
Do I need to install Half-Life: Opposing Force?
No. Half-Life: Opposing Force runs inside your browser tab, so there is nothing to install and no plugin to add.
What kind of game is Half-Life: Opposing Force?
Half-Life: Opposing Force is a shooter game. Half-Life: Opposing Force is a free shooter that runs in your browser, with no download and no sign-up. Good aim and positioning matter…