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 pay 2000 gems for AWP Pit Viper and I didnt realize that i cant accept trade offers on my linked steam account so i message gamehag if they could send me my skin to another steam account and they didnt even reply