I was preparing to write a bad review, this app is thoroughly reminiscent of apps I previously tried that turned out to be a scam.
But this one wasn't!
Although the rate is not as high as they advertise with and even within the app they make promises like "earn € 5,00 within 28 minutes", which are blatantly false promises I have to admit this is the highest rate of earning by playing games I have come across so far.
You simply install and play the games they offer, they offer extra cashback if you actually put money into these games, I have yet to try this option as I am exploring the free options.
I might update later with what happens if you actually try those options, but I'm note sure I'm going to continue exploring this app and/or these games.
At this time the invite link appears to not be working.
Since I had made enough money to spend on a purchase I started toying with the idea to actually spend it on ingame purchases to get the "free cash" the app mentions. But then I noticed I didn't actually receive the free cash I had earned in a challenge. Subsequently I noticed that all the challenges to get significant amounts of money will last way longer than the time you get to finish them.
So I checked the reviews before spending money and I decided I'd rather spend the money I earned on some crypto. Read for yourself.