PlayableRound-based survival FPS

BACKLINE: UNDEAD

Restore the facility. Outlast what woke beneath it.

Fight escalating undead rounds through a connected blacksite, restore power, open new routes, build a loadout, and push the weapon forge online in a fully procedural survival shooter.

FPSHorrorActionEndless roundsProcedural assetsWeapon progression

Play now Open directly

Actual gameplay

Launch experience

Play BACKLINE: UNDEAD

Games run inside their own player frame so controls and audio stay contained while you browse the catalogue.

Round-based survival FPS

Restore the facility. Outlast what woke beneath it.

Touch controls are built in — a move stick, drag to aim, and a thumb cluster for fire, reload, and interact — but they are not good enough to recommend. This is a fast shooter that asks for precise aim and a steady frame rate, and a phone delivers neither well enough to be worth your time. Play it on a desktop.

Endless round-based runsKeyboard + mouseValidated settings save on this device; an active run does not.

Audio starts only after a click or tap. Fullscreen availability depends on your browser and device.

About the game

Enter the world.

Backline: Undead is a round-based first-person survival game inspired by the tension and progression of classic Zombies modes. Ten connected facility zones, eleven base weapons, Pack-a-Punch variants, perks, ammo mods, special rounds, objectives, secrets, and procedural enemies turn each run into a route-planning problem as much as a firefight. The environment, characters, materials, animation, effects, ambience, music, and weapon audio are all authored in code.

Session: Endless round-based runs
Devices: Desktop only
Orientation: Landscape
Saving: Validated settings save on this device; an active run does not.
Audio: Procedural spatial audio, ambience, music, and weapon sounds with volume controls.

Controls

Know before you play.

Keyboard + mouse

WASD: Move
Mouse: Look
Left / right click: Fire / aim
Shift: Sprint
Ctrl / C: Crouch or slide
Space: Jump or mantle
R / F / V: Reload / interact / melee
Q, 1–2, or wheel: Swap weapons
Escape: Pause and release the pointer

Touch

Drag the left side: Move — the stick appears where your thumb lands
Drag the right side: Aim
FIRE / ADS: Shoot and aim down sights
USE: Buy weapons, open routes, and work the machines
RELOAD / KNIFE / NADE: Reload, melee, throw
RUN / CROUCH / JUMP: Sprint, crouch, jump or mantle
Pause button: Pause — top right corner

Compatibility

The honest version.

Arcaid tells you what each build supports today, including the rough edges. That makes it easier to choose the right game for your device.

Works best when

Choose Deploy, then click inside the game to capture the mouse and enable audio.
On a phone, Deploy goes straight into the run and the on-screen controls fade in with it.
Restore power early, open traversal loops, and keep enough points for ammunition and route gates.
Escape is a true pause boundary and safely releases pointer lock.

Current limitations

Requires WebGL, hardware acceleration, and a modern browser.
The procedural material and shader build can take around twenty seconds on the first launch.
Touch controls appear automatically on phones and tablets; pointer lock is not required there.
Only settings persist; closing or restarting ends the current run.