Krypton

This is a homebrew game, run on Gameboy Color. Original version: David Darling and Richard Darling - Advanced Computer Entertainment , 1984 - Commodore 64. Created with GB-Studio 2.0.0 beta5!

Also available for download in .CIA format for the Nintendo 3DS virtual console!

You are a superhero with superhuman powers and the ability to fly, marooned on Earth after crashing in your space shuttle on a trip from a faraway planet. You are happy in your adopted world protecting it from evil, and sudden catastrophies.

There come to Earth the three evil superbeings from your distant galaxy, bent on destroying the planet and people you love. They are armed with deadly Krypton, a crystal that neutralises your power and finally destroys you. Using your lethal death ray you try to shoot them down, avoiding the deadly clusters of Krypton aimed at you. 

Can you dodge the Krypton, can you save the world? 

Start the game: A
Move: Cursor Keys
Fire: A

Start the game: Z
Move: Arrow Keys 
Fire: Z

https://www.lemon64.com/game/krypton-ace

You can download the ROM file of the game from the WLS website!