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 like SCP games Well its not in gamehag but there are SCP game they are really awesome i love them so much i never can stop i play the steam verision becouse its free and why not?