Duo Defense is a volley defense arcade game. It centered on ping pong physics and active zombie elimination loops. Your goal is to keep an accelerating energy ball bouncing between your two frontline heroes. You use the ball to smash undead waves before they overrun your screen boundaries.
You command two sports heroes facing each other across a zombie-infested central valley. You must time your clicks perfectly to volley a glowing projectile back and forth continuously. The game engine increases the velocity of the sphere after every successful paddle contact. You need to guide the trajectory of the ball to collide with rising undead legions. Missing the sphere allows it to escape the screen and terminates your survival score.

You collect floating power items dropped by defeated zombie bosses. You must trigger specialized blizzard spells to freeze entire moving undead armies instantly. The game introduces multi-ball modifiers to unleash chaotic duplicate projectiles into the central valley. You can experience escalating survival challenges across fifty unique split-screen campaign levels.
Controls
Mouse Left Click or Touchpad Tap: Strike the bouncing ball when it reaches your paddles.
Swing your bat and crush invading alien swarms in Smash Defense right now!