This is horrible to earn rewards. I wanted to earn robux and the first 10 minutes i got 80k gems (you need 100k to get 6k robux). The game was all fine even with a ridiculous amount of ads, I don't mind - it's how they make money. The game went on and on and the gems were harder to get until half an hour later I was only getting about 17 gems per stack smash round. I was at 99k and it was SO HARD to get gems so I gave up.