Play games
Choose the game that interests you and play itfor free.
Complete the quests
Every game has some quests for which you will receive Soul Gems.
Receive rewards
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
Guys, I found how to claim your Soul Gems! go to the contracts page on a PC, under the contracts there is a link that says "Do you have any issues with your task? . Click here" , clic on it. A new page will pop out . You can now signal the contracts you finished and did not get paid for. You will have to describe your problem and give your email adress . After that you will recieve an email asking for a screenshot as proof , just send it and VOILA :) . GOOD LUCK.