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 mostly watch ads on this site and that's all, Wall offers are pretty slow for me so yeah. Would appreciate it if you share your tips on grinding this site for free games so that everyone can see it!