If you're looking for a spine chilling, heart pounding experience that combines tactical thinking with razor sharp shooting reflexes, then the side scrolling tower defense genre is just the ticket. Undead Invasion is a new breed in the genre, throwing you into a harsh post-apocalyptic world, where you have to decide with a single bullet between life and death.
In Undead Invasion, you step into the shoes of a lone survivor tasked with fending off relentless, ever-growing waves of zombies. The game is set within a dilapidated orphanage that serves as your fortified stronghold. Collect coins each day you survive to buy weapons, set traps, fortify your barricades, and upgrade your abilities – all to prolong your survival streak before you are totally overrun.
To survive on this brutal battlefield, you have to learn a flexible system of control keys:
| Action | Controls (Option 1) | Controls (Option 2) |
|---|---|---|
| Movement | Left / Right Arrow Keys | W / A / S / D Keys |
| Attack / Shoot | Mouse Click | Spacebar / Mouse Click |
| Switch Weapon | Q Key | Q Key |
| Melee (Knife / Kick) | E Key (Knife) / Auto-kick when close | E Key / Spacebar (Kick) |
| Reload | R Key | R Key |
| Use Item / Bomb | Numpad 1 | Number Keys 1 through 9 |
| Build Structures | Fence Icon (On-screen) | Tab Key (Start Wave) / Esc (Menu) |
The core feature that sets Undead Invasion apart is its blend of Roguelike "Permadeath" mechanics interwoven with a dedicated Playground Mode.

Utilize long-range weapons to pick off enemies. Reserve kicks or melee weapons—such as crowbars and axes—for when enemies close in.
Deploy wooden barricades and spike traps right from the initial waves to control the movement speed of the horde.
Conserve grenades and landmines, detonating them only when the zombies have gathered into large, dense clusters.
Do not hoard your cash; instead, consistently upgrade your weapon damage, health, and movement speed after each passing day.
Undead Invasion is a very exciting experience, with its visceral, realistic pixel-art graphics and a relentless pace that increases with each passing day. It’s a very addictive title, where one mistake can cost you your life, but it always keeps you hitting that “Retry” button.























