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 really enjoyed playing this game because really liked the idea of the game. You control a car with a gun and you destroy other cars. I really recommend you play this game but if you just play it for the gems i would not play this game, it really does not work good with the task system. You always get rejected and it takes a lot of time so you do not know fast that you got rejected. But if you want to play the game for fun you should play it