(21/30) Quartet

This is the Master System version of the game.

Very arcade-centric horizontal platformer with a sci-fi theme. You play as a woman named Mary who has to destroy enemy alien invaders.

In each of the 6 enemy filled stages, you have to find and destroy the boss, grab the key it leaves behind and find the exit. There's a jetpack you can use, but you get knocked off it when you get hit. Try to stay low so it doesn't remain suspended too high in the air to reach.

Annoyingly, the shoot and jump buttons are reversed from standard.

At the title screen if you press the START button 14 times and then press A you start the game with a wide beam.

Text and objects are easy enough to see on the small screen.