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.
Seems I forgot to actually post this one, but I took these screenshots a while ago. Not sure which is the "main" account.
User: https://gamehag.com/profile/markpresas09 https://gamehag.com/profile/markpresas90
Reason: Copy paste spam, multiple accounts (name, friendslist, origin and same behaviour, posted in same threads too)
Proof: https://imgur.com/a/p9rMvQL