Undead Invasion - Play Free Online | Wipzu

About Undead Invasion

Undead Invasion is a browser zombie survival game built around defending a fragile safe point against waves of undead. Public game descriptions frame the battle around a last shelter, often described as an orphanage, where each night becomes more dangerous. The game mixes side-scrolling shooting with defense planning: you move, fire, reload, kick enemies back, and choose equipment before the next wave arrives.

Its strongest hook is the blend of roguelike pressure and tower-defense preparation. New Defense Mode gives you time to shop for weapons, traps, and structures, then tests whether that plan holds when zombies close in from both sides. Playground Mode is more experimental, letting players try zombie-stopping setups without the same survival timer. That split makes the game useful both for serious runs and for testing strategies.

The combat loop depends on resource discipline. Guns solve immediate threats, but ammunition and reload timing limit how freely you can shoot. The knife and kick give emergency control when zombies get too close, while inventory items such as bombs can clear clusters that would otherwise break the defense. Randomized upgrades and changing enemy patterns make repeat attempts feel less scripted than a fixed wave shooter.

Undead Invasion is worth playing because it rewards preparation as much as reflex. A player who only shoots will eventually get cornered or caught reloading. A player who plans a fallback line, buys the right tools, and uses melee spacing before panic sets in can survive much longer. The game is tense, but it is not mindless; every wave asks what you saved, what you spent, and where you stood.

Key Features

  • Defense-focused zombie survival with a shelter or orphanage as the last safe point
  • New Defense Mode for buying weapons, traps, and structures before waves arrive
  • Playground Mode for experimenting with zombie-stopping setups under lower pressure
  • Mixed combat tools: firearms, reloads, knife attacks, kicks, bombs, and inventory items
  • Roguelike-style replay value through randomized upgrades and changing enemy pressure
  • Side-scrolling movement that forces attention to both left and right approaches

Controls

W / A / S / D or Arrow Keys - Move
Mouse - Aim in builds with mouse aiming
Left Mouse Button / Q - Shoot or fire current weapon, depending on build
E - Knife or melee attack
Spacebar - Kick zombies back
R - Reload
Number Keys - Use inventory items such as bombs or tools
MobileUse the on-screen joystick to move and the action buttons to shoot, reload, kick, use melee attacks, and trigger inventory items.

How to Play

  1. 1Begin with a defensive plan before the wave starts. Buy a basic weapon or trap that covers the side where you expect the first pressure.
  2. 2Move only as much as needed. Running too far from the shelter can leave one side exposed while zombies approach from the other direction.
  3. 3Shoot controlled bursts and reload during short gaps. Emptying the magazine into a single weak zombie is a fast way to lose the next wave.
  4. 4Use the kick or knife when enemies reach close range. Melee spacing buys time and saves ammunition for larger clusters.
  5. 5Spend rewards on tools that solve your current problem: traps for crowd flow, stronger guns for elites, or bombs for dense waves.

Tips & Tricks

  • Do not place every trap at the front. A second line of defense near the shelter can save the run when the first wave breaks through.
  • Reload after a cluster is cleared, not when the next cluster touches you. Undead Invasion's pressure comes from bad reload timing as much as from enemy speed.
  • Use melee tools to preserve bullets early. Kicking or knifing a lone weak zombie is often better than wasting ammunition you will need for the next group.
  • In Playground Mode, test item combinations deliberately. Try one weapon and one trap type at a time so you actually learn which piece handled the wave.
  • If enemies approach from both sides, clear the faster side first. A slow zombie left alive is less dangerous than a runner reaching the shelter during a reload.

Game Info

DeveloperBrowser portal build; original developer not publicly listed
Release Year2025
PlatformBrowser (desktop, tablet, mobile)
TechnologyHTML5

FAQ

New Defense Mode combines shopping and survival. You prepare weapons, traps, or structures before the wave, then defend the shelter against increasingly aggressive undead attacks.

Playground Mode is for experimenting with weapons and defenses without the same strict wave pressure. It is a practical place to learn which tools handle clusters, runners, or close-range threats.

Ammunition and reload time make shooting alone risky. The knife and kick give you emergency spacing when a zombie reaches close range or when you need to save bullets.

No. Public descriptions mention randomized upgrades and changing enemy patterns, so repeated attempts can create different item priorities and threat timing.

Early survivability usually comes from reliable crowd control: a better basic weapon, a trap near the shelter, or an item that clears grouped zombies. Pure damage helps later once the defense line is stable.