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.
For me,i just login daily and watch appzone,so i basically get 105 gem everyday and i also try my luck on survey(although all ended up not match tho), it still a long way to get my reward Sekiro tho because there are not much task in my country Malaysia.