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.
the app is a good way to make gems, app zone has 30s videos that makes you 100 gem every day in 5 mins but it will stop and ask you to do in-game tasks also, I can complete offers on it and not on the site but it would be better if they add voting for articles and daily chest to it