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.
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
it says download for mobile and i cant get it
seems like a really fun game based off comments and reviews. i will have a try as this game was also recommened from my friends. btw i love this website