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.
2 years ago, i downloaded only 7GB. Now i back to the game and i found it 35GB xD. the problem that is setup size xD. The whole game need 80GB on Disc. It's only one map. They don't know how remove old update and make it low xD