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.
I hope I'm the only idiot who write an article for hours and kinda... forget to save. Did anyone fail like this before, you write something for ages, misclick and it's gone? :P (Also here: want to buy new keyboard.) #kappa