Space Ace is an an old school aerial shooter game. It uses an X-axis path instead of a Y-axis one. The objective is to destroy everything in your path since their elimination generates "energy" which powers up your ship. Collecting enough energy (blue dots) which allow your ship to "level up" and upgrades your weapon to a more advanced one.

 

This keeps the player engaged and allows him to keep up with the progressive difficulty (increased spawn rate) of the game.

 

Space Ace is designed for the web and was made using unity using C# code.