"Doomsday - Zombie Invasion" is an adrenaline-pumping mobile game set in a world overrun by the undead. As the city's last line of defense, players are tasked with operating a powerful cannon to fend off waves of zombies attempting to breach the city walls. Each zombie eliminated rewards the player with $1 in-game currency, fueling their arsenal expansion. Players can invest this currency to acquire a second cannon, doubling their firepower and enhancing their chances of survival. The game intensifies as players must carefully monitor varying zombie traits – some are lightning-fast, while others are slower yet resilient. A crucial aspect of gameplay is vigilance; allowing five zombies to slip past results in a catastrophic breach, signaling the end of the game. With its blend of strategy, action, and constant threats, "Doomsday - Zombie Invasion" offers an immersive experience for those who relish the challenge of outlasting a zombie apocalypse.