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 have tried to download it through their link on mobile but it didn't redirect me, when i wrote to Misty i got answer to turn of AdBlock but i don't have any AdBlocks.