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.
how do you complete this game quest, I reached 31 stars and puzzle 11 but no rewards?
Yeah i'm in the same boat where I got nearly 60 stars and no reward
you need to take screenshot and post it to this website