Created by Sam Alonso 2021
Download Unity v 2019.4.22f1 LTS
File > Build Settings > Select Android/iOS. Set any portrait resolution. Recommended: 1920x1080.
Swipe input over the screen. Click to fire a laser.
If a ship is being hit it will destroy others in N/S/E/W coordinates of the same colour.
Rocks gives you some cover when enemies are shooting. 
Kenney (https://www.kenney.nl/)