Hi guys, Now I will show you how to get free games on this site!
1 step: Register (please be my referral) :) http://www.tremorgames.com/?ref=78703
2 step: You need tremor coins for buying games!
3. How to earn tremor coins? You can earn tremor coins by Watching videos, complete tasks and surveys, complete offers -http://www.tremorgames.com/index.php?action=offers
and playing archievements flash games - http://www.tremorgames.com/index.php?action=offers
NOTE: Only archievement games gives tremor coins!
4. When you collect enough points for game which you want go to Tremor Rewards - http://www.tremorgames.com/index.php?action=shop
5.When you choose game, click on "view item" (under the game picture), then click on purchase item.
6.Your purchase has successful, to view the key of the game, you need go to the profile>items.

I hope I've been helpful!
If you have questions ask me :)