# Half Life Opposing Force question
**URL:** https://boards.straightdope.com/t/half-life-opposing-force-question/207973
**Category:** Cafe Society
**Created:** [October 17, 2003, 11:25am UTC](https://boards.straightdope.com/t/half-life-opposing-force-question/207973 "2003-10-17T11:25:17Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Herge](https://boards.straightdope.com/u/Herge)
#### Post date: [October 17, 2003, 11:25am UTC](https://boards.straightdope.com/t/half-life-opposing-force-question/207973/1 "2003-10-17T11:25:17Z")
I’ve got Half Life Opposing Force installed, but I’m unable to access the Single Player option, it is greyed out. I installed it from the retail Half Life Generations pack. The multiplayer bits work, but I just can’t access the single player mode - I know it exists!
Anyone know whats gone wrong here? I’m sure its something simple…
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### Author:  [@Herge](https://boards.straightdope.com/u/Herge)
#### Post date: [October 18, 2003, 12:47am UTC](https://boards.straightdope.com/t/half-life-opposing-force-question/207973/2 "2003-10-18T00:47:46Z")
Just want to bump this once. Some more info: I installed upgrade patches to Half Life to enable me to play it online. I don’t think I upgraded Opposing Force. I guess I will try re-installing it if I can’t get the single player mode working…