Ammo Ambush

You control a stationary turret at the bottom of the screen. Your job is to hold your position against waves of enemies that advance from the top. You use the mouse to aim and fire, and you can switch between different weapons using the keyboard. The main objective is to survive as long as possible, managing your limited ammunition for each gun while the enemies become more numerous and aggressive. The pace is steady, with a difficulty that builds in a predictable way. It feels like a test of focus and resource management more than pure reflexes.