Heartline transmission // Blackwire City

Heartline Motorworks mechanical heart emblem

Blackwire Defense

Your crew is the defense.

A story-driven cyberpunk tower defense where Redlining always has a cost—and every recruit chooses to join.

  • PC (Windows) first
  • Free itch.io release planned
  • No real-money purchases
Roxy Vane, a red-haired mechanic with a cyan-lit cybernetic right arm

Garage Chief // Doc

Roxy Vane

Cass Quinn, a platinum-haired gunner holding her two pistols

Street Captain // Gunner

Cass Quinn

Open transmission

Mission profile // What makes it different

Not towers.
A crew.

Every defense puts people on the line. Position your fighters, move your vehicles and command the battlefield from Boss's console.

01

Your crew holds the line

Deploy the Chrome Hearts directly. Every fighter brings her own class, weapon, ultimate and reason to stay.

02

Vehicles stay in motion

Reposition bikes and pickups while the fight is live. Intercept a push, reinforce a route or pull back before it is too late.

03

Hack the battlefield

Spend RAM to disrupt vehicles, slow waves and break defenses—but every hack raises Signal Heat.

04

Redline—with consequences

When a fighter asks for permission to disable her limits, the answer is yours. The Sync Load is hers.

In-game pixel units // Development assets

Fighters, vehicles and enemies are already moving through the current build.

Roxy pixel sprite
Roxy
Cass pixel sprite
Cass
Vera pixel sprite
Vera
Copperhead pickup pixel sprite
Copperhead
Maw Thug enemy pixel sprite
The Maw

Crew files // Selected operatives

They have their own
reasons to fight.

The Chrome Hearts are not pieces on a board. They are adults with histories, limits, loyalties and relationships that continue between missions.

Roxy Vane in her garage with her cybernetic right arm and wrench
Founding crew // 27

Garage Chief // Doc

Roxy Vane

“Nobody breaks down on my watch.”

Heartline's mechanic, field repair specialist and the one who keeps the family moving.

Cass Quinn above the Chrome District with Knock and Answer drawn
Street response // 23

Street Captain // Gunner

Cass Quinn

“Hold the line? I am the line.”

Born in the Chrome District. Fast with every firearm—and faster to stand between trouble and her people.

Vera Locke standing on a rooftop with her electromagnetic rifle Stillpoint
Overwatch // 26

Overwatch Lead // Sniper

Vera Locke

“One is enough.”

An ex-police marksman who trusts a verified target more than any badge or automatic order.

Sync Load // Limits disengaged

Power now.
The cost remains.

Redlining disables an augmentation's safety limits for a decisive burst of speed, force, accuracy or repair power. It can save the district. It can also leave permanent damage.

Incoming field request

“Boss, permission to redline?”
Sync Load Elevated

The power is immediate. The consequences are not erased after victory.

Blackwire City // Lower levels

Built upward.
Fought over below.

In the Chrome District, garages, salvage yards and contraband routes keep entire blocks alive. Heartline Motorworks is a legitimate shop by day—and the Chrome Hearts' home after dark.

Rival gangs want the roads. Everhaven wants the infrastructure. And on the worst nights, something answers from the Wire.

“If it has a heart, we can make it run.” — Elias “Eli” Kade
Heartline Motorworks, a large clandestine garage with vehicles, workshops, The Relay and The Sync Bay
Heartline Motorworks // Approved development artwork
An abandoned industrial reclamation yard in Blackwire City
Chrome Reclamation Yard
Top-down tactical map artwork showing roads through an industrial freight district
Tactical mission map artwork // Axis Freight Nine

The streets are part of the fight

Hold routes. Move vehicles. Change the plan.

Defenses unfold across fixed paths and contested intersections. Your crew covers the angles while the Pit Crew moves to intercept whatever breaks through.

The Relay Signal searching…
Network
Encrypted contact channel
Contract
Voluntary
Real-money cost
None

Random search // Locked during early campaign

The Relay // Contact, not ownership

Every recruit
chooses to join.

The Relay decrypts the dossier of an adult mercenary who has chosen to be contacted. She reviews the contract, fights beside the Chrome Hearts and decides for herself whether to stay.

No real-money purchases. The Relay and progression use resources earned through play.

Transmission continues

The signal is
getting stronger.

Blackwire Defense is in development for PC, with Windows first and a free release planned on itch.io. Community channels are not online yet.