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 had this game offered to play untill yesterday and goal was to attack lvl 2 monster to claim soul gems on gamehag, I've finally did it today, but I can't find the link where the offer was.. Does anyone knows that offer wall name, or do you have a link for it? if i get the link I could go to "status" tab and perhaps claim a reward.