Horizontal shmups are, through some unknown virtue, naturally harder than vertical shooters. Some of the best horizontal shmups are almost impossible for the average person to complete, such as Gradius or R-Type.
Proto Shooter is an entry in the
Experimental Gameplay Project's "Unexperimental Shooter" monthly theme that follows this difficulty despite only having a few enemies and power-ups. How does it do this, you ask? By making score dependent on your accuracy, and then by speeding up enemies as time passes.
Proto Shooter is extremely simple to control. Move with the mouse, shoot with the left mouse button, trigger slow time with the right mouse button. You move slightly slower in slow time, but enemies slow to a crawl, making it easier to destroy them. Every shot counts in
Proto Shooter, both literally and figuratively. Any missed shots count against accuracy, which is then applied to the enemy's base score. For example, if you have an accuracy of 0.97, and you kill an enemy worth 100 points, you only get 97 points.