yeah is fake I think the only way to make soul gems is to simply donate.
Not me..
I don't like to use mobile to earn stuff.. 
I think it is possible
didnt work for me
It works. For me at least, I haven't got any problems yet. I'm getting my rewards daily by playing games and completing in-game tasks. You can do the same! It's a good way to get SGs faster...
in 3 steps
Choose the game that interests you and play itfor free.
Every game has some quests for which you will receive Soul Gems.
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
You know that on Gamehag you can get real rewards for free, right? Join us, complete walkthrough and get your chest!
Says in contracts that you can win gems reaching certain levels in android games but there are comments in the app saying that it does not work