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.
Which one do you choose?Personally I switch between them depending on the map, for example on Mirage I choose M4A1-S and on Cache I use M4A4