Who's up for a little "four-way four-play"? ;)

I'm willing to buy the 4 Pack at the sale price of 3 for $2.50 each + 1 free copy for us to enjoy. The sale lasts until the 11th.

http://steamproxy.com/steamstore/app/296470/

Here is a test.

Dino D-Day is super cheap right now. I'm thinking about getting the four pack. Who wants to try it with me? There is also a DLC co-op campaign available.

http://steamproxy.com/steamstore/app/70000/?snr=1_620_4_1400_45