Looking for feedback on my first game Starship Blaster [Android Only] Thread

Starship Blaster

Hello everyone! My name is Jamaal and I am the owner of Beyond Dreams Apps. I'm looking for some input on my first app ever released called Starship Blaster (which you can find by clicking here), a game where you are tasked with not only keeping your own spaceship alive, but also your capital ship as it assists you in warding off enemy foes that have invaded your sector of space. As this is my first game, I'm really interested in getting some feedback on the game....what works, what doesn't and how i can improve so i can not only update the game, but become a better developer overall. I'll go into a bit of the games features below

The premise of the game is simple: If you or your capital ship dies, you loose. BUT, you have a few options at your disposal to make the likelihood of dying smaller. Using the credits/points you get for destroying different types of enemy ships, you can use those points to purchase things within the in game store, whether it be a repair shields boost, escort ships, auto turrets, etc

When you purchase something, it has an immediate effect on the gameplay, giving you a bit of an edge and some variety

Many times you'll be playing a game, and you'll have an amazing run where you kill a horde of enemies with only one life left, but not be able to share that feat with the rest of your friends. To counteract that problem, players here have the option to immediately upload a replay of each wave they've defeated to facebook, twitter, youtube of mail without any hassle!

And perhaps one of the best parts of the game is that you can play the game without viewing a single ad whatsoever if you choose not to. The only ads that you will see are the ones you opt to see, and viewing them will reward you with in game credits you can use to purchase more stuff in the store, or rematch a wave you were defeated by. It's all up to you. That's basically it. Again, I would really appreciate peoples feedback, regardless of your experience making or playing games

Cheers!