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.
Most of the rewards are "Random Quality" or something like that. So has anyone gotten anything good? (random key as well) cant seem to find a post on this. post what you have won