Hello there!
I checked out your game Coin Surge, and it's not really bad for a beginning stage. I think if it's possible you should add more features, like with the Shop feature and it's upgrades, and some special effects like the sparkling effect for the coins when they either appear or when you click on them. Also, the background (I don't really know what it's called) or the GUI could use some improvements with the colors and styles. Overall, it's pretty cool!