Mario World Overrun

You control a stationary cannon, using your mouse to aim and fire at the approaching lines of Goombas and Koopas. Your main goal is to prevent them from reaching and destroying your castle gate. You earn coins from defeated enemies, which you spend between waves on better weapons or special items like bombs. Cycling through your arsenal with the keyboard and placing items with the spacebar becomes a quick, rhythmic part of the later, more frantic waves. The pace starts slow but builds steadily as more enemy types appear, creating a genuine scramble to manage your resources and firepower. It feels like a tense, satisfying race against a creeping tide.