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 get a nice computer but I notice that the game is getting more laggy on recent updates. I wonder if is some just for me. I get a nice internet connection.