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.
Honestly I only played this to get points. At first I didn't even like it, and just wanted to finish. But the more I played, the more I enjoyed it. Joining a guild really pushed that as well. It is more complex than it seems on the surface. New players join my guild. I will help with any questions you may have.