Game is free-to-play. Use this link:

https://account.hirezstudios.com/tribesascend/?referral=99112&utm_campaign=email

Everybody download global agenda from the free market. We are going to play it cuz its sick and its fucking free <3

l4d2 @ 11:00pm

http://store.steampowered.com/app/1800/

check it out

Now available to be activated on Steam. Cortex Command and Revenge of the Titans will not activate because the games are not on Steam yet. Though if Steam adds them in the future, they should be activated.