Drag to move. Your character auto-fires at the nearest zombie — just focus on staying alive.
Drag anywhere on the arena to move your character — you fire automatically at whichever zombie is closest, so there's no separate aim button. Zombies spawn from the edges and shuffle toward you from every direction, faster and in bigger bursts the longer you survive. Getting touched by a zombie costs health; run out of health and the siege ends. Six kinds of power-ups occasionally drop — walk over them to collect.
Medkit restores health. Weapon permanently speeds up your fire rate. Speed boosts your movement for a few seconds. Multi-Shot fires a three-way spread instead of a single shot. Piercing lets your shots punch through multiple zombies in a line. Shield makes you fully immune to damage for a few seconds — save it for when the horde is thickest.
Keep moving in loops rather than standing still — since you auto-fire at the nearest threat, constant movement naturally spreads damage across the whole horde instead of one cluster overwhelming you. Lead zombies away from clusters before turning to fight, effectively thinning them out one or two at a time. Save Shield power-ups for burst-spawn waves rather than using them immediately — that's when they save the most health.
Do I aim manually? No — your character always fires at the nearest zombie automatically, so movement is your only real decision.
What are the different zombie types? Green zombies are standard, orange ones move faster but have less health, and red ones are slower but take more hits to bring down.
Does the game get harder over time? Yes — waves increase roughly every 16 seconds, zombies move faster the longer you survive, and from wave 3 onward extra zombies burst-spawn together.