Penguin Massacre

You control a stationary turret, using your mouse to aim and fire at waves of penguins marching toward your base. Your goal is to eliminate every penguin in each wave before they breach your defenses. Between rounds, an upgrade menu lets you spend earned cash on better weapons or improved firepower. The pacing starts slow but quickly demands faster reflexes as the penguin numbers swell. It feels like a tense, escalating standoff against a comically determined enemy.