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.
A very good game this is! Lots of action and easy to play. A great variety of tanks and planes. I just love this game and can't stop playing it.