Today we have 2 another game for free with trading cards. So you can make profit on both of them. Just follow these links below:
For Platypus II go there
Just enter your email adress. Active two links in email and get your key in your profile like on picture:
For Enemy Mind go here
Just enter your email. You don't have to follow anything. You will get key into your email (check also spam)
Enjoy your new games :) Free games are good, aren't they?
Make profit with this instruction
You can find more steam free games here