Can you survive as an old man?
Survive with five elderly people in a zombie apocalypse world. They were spending the rest of their lives quietly in a nursing home, but they have a colorful past that no one knew about. They might have been a killer, a war veteran, a police officer, or even a magical girl or a mechanic for the Earth Defense Force. Hunt zombies skillfully in your own way. When a zombie shows its teeth, they say, "Bite Me, Sonny!"
Old Soldiers Never Die
Choose characters with their own unique backgrounds and characteristics. Combine specialized weapons to return as a seasoned zombie hunter, and prepare for your retirement by knocking out the teeth of countless zombies.
Items with a Story
Cherished items hold great power. Find and collect the weapons and equipment you used in your youth. You can collect dozens of pieces of equipment, from simple stat boosts to ridiculously cool effects. Own the equipment permanently through the store, and start with the equipment's effects when you go out to explore.
Legendary Weapon
Unleash the weapon's unique abilities and upgrade it to become even more powerful. Unlock special abilities to take down zombies in style. Even if countless bullets and zombies block your path, break through with more weapons.
Senses Reawakened
Level up and choose various stats. As you hunt more zombies, can you feel your dormant senses slowly awakening? Reclaim your glorious past and prove that you survived because you were strong.
The Zombie Boss
Rude zombies that ignore even the elderly, and above them is an even ruder boss. Teach the boss who attacks with flashy patterns a lesson. Teach them what social life is, what it means to be an adult, and that you shouldn't bite people. Etiquette class starts now.
Countless Quests
Complete quests and get rewards. Get stronger and get more rewards. Fight with a specific character, or pull out the teeth of flying enemies. Teach the boss some manners. Complete challenges with a specific weapon.