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 think after fortnite come out pubg took nearly everything from fortnite battle pass skins ... honestly i purchased pubg when they (dont know too much english i couldnt finish my sentence xd) and i love it