Undead Invasion

Undead Invasion drops you into a damaged orphanage that zombies refuse to leave alone. Each day is a fresh wave: they push the fences, you push them back, and the building only lasts if you keep shooting, kicking, and rebuilding in the same breath. The pace stays tight from the opening minutes. Stand still too long and the line collapses.

Undead Invasion gameplay

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Think of it as a first person survival loop with light tower defense chores. You clear the yard with gunfire, patch broken boards when the wave thins, then decide whether the next scrap of currency goes into harder shots or thicker walls. Browser builds of undead invasion have been easy to find since late 2023, which fits players who want a short siege session without installing a full client.

How to Play Undead Invasion

Moving and shooting the first zombie wave in Undead Invasion

Move, aim, and clear the first pack

Move and fire

MoveWASD or arrow keys

ShootLeft click

KickSpace

ReloadR

Building barricades and traps in Undead Invasion

Build and repair before the next day

Defense tools

BuildFence icon structures and traps

BombNumpad 1 when a crowd stacks on a wall

Upgrades and Playground Mode practice in Undead Invasion

Swap weapons, spend loot, then try Playground Mode

Weapons and pause

Change weaponQ

KnifeE

PauseEsc

What Undead Invasion asks you to protect

The map is not a huge open city. It is a tight orphanage yard with doors, fences, and choke points that matter. Zombies arrive in waves that grow louder each day: faster paths, thicker packs, less forgiveness if a panel drops. Your job is to keep that shell intact long enough that tomorrow still exists.

That focus is why undead invasion feels different from pure arena shooters. Half your score is marksmanship. The other half is whether you noticed the broken board on the west side before dusk.

The four jobs that rotate every minute

Shoot and thin the pack from a distance before they climb the wood.
Kick and knife when something reaches your personal space.
Walk the fence and repair gaps while the wave is thin.
Spend loot on either firepower or fortification, then rearrange traps if a lane still leaks.

Good runs look restless. You rarely plant in one corner for a full day. You patrol, shoot, patch, and move again.

Playground Mode is the quiet advantage

Many survival shooters throw you straight into failure. Undead Invasion gives you Playground Mode so you can rehearse. Drop traps in the hallway you keep losing. Test whether a shotgun feels better than a rifle on the porch. Rebuild the whole ring until the flow makes sense. Then start a real day knowing the layout is yours, not a guess made under fire.

That practice loop is one of the smarter systems in the game, and it is worth using before you chase long survival streaks.

Field tips that keep the orphanage standing

Tip	How	Why it helps
Feed your main gun first	Buy damage, fire rate, or penetration for the weapon you actually hold	Faster clears mean fewer zombies chewing the same board
Repair on quiet beats	Patch wood when the yard thins instead of during a full rush	Stops overnight breakthroughs that end a strong day
Bomb the clusters	Hit Numpad 1 when bodies stack on one wall	Resets pressure before the fence folds
Match gun to range	Shotgun up close, rifle across the yard	Less wasted ammo, cleaner kills
Trap the choke first	Place traps where paths narrow, not on empty lawn	Passive damage softens packs before you aim
Kick for breathing room	Use Space when a zombie hugs you or the fence	Buys a second to reload or swing the knife
Bank some cash	Do not empty the wallet on guns every night	Emergency repairs save runs that look doomed
Keep moving while you shoot	Strafe and retreat instead of planting your feet	Harder for flanks to surround you

Related games if you like Undead Invasion

Want more shooting pressure or close range combat after a siege of undead invasion? These pages on Speed Stars unblocked sit nearby:

X Trench Run: Corridor flight combat where you weave and fire through tight tunnels.
Gun Spin: Recoil driven distance runs if you like firearms with a different win condition.
Big Shot Boxing: Fast arcade fights when you want melee timing instead of barricades.
Bubble Trouble: Lighter reflex shooting if you need a calmer cooldown after zombie days.

Come back to Undead Invasion when you want another day on the porch: kick the closest walker, patch the west fence, and see how long the orphanage holds.

FAQs about Undead Invasion

What is Undead Invasion?

Undead Invasion is a free browser survival shooter. You defend an orphanage from daily zombie waves by shooting, kicking, building barricades, and spending loot on upgrades.

How do you control Undead Invasion?

Move with WASD or arrow keys. Left click shoots. R reloads. Space kicks nearby zombies. Q swaps weapons, E uses the knife, Numpad 1 throws a bomb, and the fence icon opens build options. Esc pauses.

What is Playground Mode in Undead Invasion?

Playground Mode is a risk free sandbox. You can place traps, try weapons, and rearrange barricades without dying, then take that layout into a real day based run.

Should I upgrade weapons or barricades first?

Early on, keep a balance. Pure damage leaves soft walls that collapse overnight. Pure fortification leaves you slow at clearing packs. Many players raise main weapon damage one step, then dump the next purchase into barricade health.