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.
Yeah you read that right there are many reasons for that if you want to know more just messege me and i will tell you why PUBG is better than FORTNITE