KUNKUN Defender is an FPS + tower defense game where players need to resist zombie invasions in different regions affected by a virus outbreak until a helicopter comes for rescue.
The core gameplay loop revolves around defending against waves of Kun-infected zombies using a blend of tower defense and first-person shooter mechanics. Players must strategically place and upgrade a variety of defensive turrets around a rectangular map to fend off the incoming hordes.
Players can choose from 30 different weapons to directly engage the zombies, supplementing their defensive turrets. The FPS combat allows players to upgrade their weapons and abilities, such as increasing their melee attack power, to become more effective in close-quarters combat.
During gameplay, players can find and consume various beverages that provide temporary boosts to their attributes, such as increased health, damage, or movement speed. Deciding when to use these consumable upgrades adds an extra layer of strategy.
As players progress through the game's three different maps, they face increasingly difficult waves of zombies. The game has a roguelike element, allowing players to carry over some upgrades and abilities to help them progress further in subsequent playthroughs, creating a balance of challenge and progression.
Reviewers praise the addictive and frantic nature of the gameplay, describing it as the "best wave defender ever made" and a "genuinely good game to play for a good few hours." Players appreciate the satisfying combination of tower defense and FPS elements, as well as the ability to unlock and upgrade various weapons and abilities. While some note the game's relatively short length and lack of content variety, they consider it a great value for its low price point.