Games Like Alian

This is an ordinary shooting game.
In these days of overflowing original games, it is hard to know which one to choose even if there is a game you want to play, or you want to enjoy a normal game system but the extra features get in the way, don't you think so?
This game consists of four stages with different difficulty levels.
The objective of the game is to clear each stage.
This game operates with only the minimum system necessary to make the game work, and you can fulfill your desire to conquer the game with simple rules that aim to clear the stages by moving left and right and shooting only.
There should be no loss if you have it for now.