Undead Invasion

What is Undead Invasion?

Undead Invasion is a side-scrolling shooting game that blends roguelike replayability with tower-defense planning. Set in a ruined orphanage that serves as your headquarters, the game challenges you to hold your ground against escalating zombie waves while managing limited resources. Each run stays unpredictable thanks to randomized upgrades, and expanding your weapon options makes every new wave a tougher stand.
The core loop revolves around defense, repair, and adaptation: you spend resources on purchases, build barricades, and choose upgrades that shape the pace of each run. New zombie types appear as daily waves grow harder, so improving weapon power and adapting to different enemy types is key to conquering all undead waves. Victory comes from smart positioning and steady improvement—failure arrives once your defenses collapse and the orphanage falls. A separate Playground mode lets you experiment freely with unlocked traps, weapons, and layouts without death risks interrupting your tactical testing.

How to Play

Use the Arrow Keys to move your character and click to attack. Press [Q] to switch weapons, [E] to use a knife, Numpad 1 to use a bomb, and [R] to reload. Use the Fence icon to build structures, and press the Spacebar to kick. Spend the resources you earn to reinforce structures, expand your weapon collection, and pick upgrades between waves. Positioning matters as much as firepower, so place barricades carefully and adapt your loadout as new zombie types appear.