Steam will host a free weekend that Valve says is the service’s biggest yet; 10 PC games in all will be free during the weekend-long promotion, which would total about $240 if purchased at their regular price.

Steam’s free weekend kicks off at 10 a.m. PT tomorrow and includes the following titles, which Valve says will also be available for purchase “at tremendous savings.”

There are some excellent games you’ll be able to play Company of Heroes 2 and XCOM. If co-op games are your thing, there are plenty for you and your friends to try out this weekend, including CoH2, Killing Floor, Payday 2, and Trine 2.

Steam members can out the following ten games for free,

1. Awesomenauts

2. Blade Symphony

3. Company of Heroes 2

4. Don’t Starve

5. Grid 2

6. Injustice

7. Killing Floor

8. Payday 2

9. Trine 2

10. XCOM: Enemy Unknown