For future reference

So, I stumbled upon my very first and only published game, and figured it needs some improvement. So here are some of my ideas:

• Improve game menu design
• Add hover animations and sounds to the buttons
• Make a pause button and scene
• Add collectibles such as
  • Coin multipliers
  • Shield
  • Automatic rocket launcher
  • Double shooting
• Add a combo system that maybe gives the player more coins
• Add particle effects and more feedback
• Create a little story for the game
• Change the wave system