FlySurvival

This is a fun 2D game, despite its simple form, but extremely complex. It has a simple but not rough 2D picture, a nice airplane and a few aliens.

Gameplay
You need to constantly control the frequency of tapping the screen to adjust the flight altitude and landing speed of the plane, as well as shoot so that the plane can stop all the aliens on the right side of the screen. If the aliens pass or touch the plane, it's game over.