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.
Has anyone bought these? It says random quality under each one so I'm hesitant to buy since they probably just buy the cheapest one and give you that. I messaged misty about it but didn't really get a reply so if any one's bought this what condition did you get?