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.
https://store.bandainamcoent.eu/eu/product/437895/little-nightmares-pc-download Just add it to your cart and checkout. You will get an email with a link to the download information which will have a steam key in it.