Carbon Line

Command a fleet from above. Then drop in and pilot it yourself.

CARBON LINE is a sci-fi real-time strategy game that runs directly in your browser — no download, no install. Build a base, harvest energy, climb a research tree, and grind down rival commanders across four battlefields.

⚔️ Features

Possess Mode — the twist Take direct control of any unit on the field. Steer with WASD, aim with the mouse, fire the guns yourself. Break off from your tank column and personally lead the charge, then pop back out to commanding the whole army. Every unit is pilotable — even harvesters.

A real RTS economy Energy crystals that deplete and regenerate, supply caps, power reactors, repair stations — with harvesters that keep working while you focus on the front line.

Ten unit types, one full tech tree Start with scouts and troopers. Research your way up to plasma tanks, shielded mechs, interceptors, siege artillery, heavy cruisers — and finally the Quantum Mothership, a flagship that repairs itself, charges an enormous main gun, and continuously launches its own escort fighters.

Commanders with personalities Each opposing commander rolls its own temperament — some turtle behind turret walls, some rush you early. Three difficulty levels, and on Hard they will punish a slow start.

Two modes, four maps

• Skirmish — destroy the enemy command center. 1v1, 1v2, 2v2, or a 4v4 eight-army war
• Survival — hold out against endless escalating waves for as long as you can

Built-in Codex — full stats for every unit and building, readable in-game.

English & ไทย — switch language any time from the menu.

🎮 Controls

• Left-click select · drag to box-select
• Right-click move / attack
• Mouse wheel or trackpad pinch — zoom · arrow keys / WASD / two-finger scroll — pan
• Possess Mode — WASD to steer, right-drag to look, Space to fire, Esc to exit
• Pick Mouse or Trackpad controls in the menu before you start

Plays best in fullscreen — hit the fullscreen button in the bottom-right of the frame.

🜂 About the name

We're carbon-based life — and "line" means both a front line and a dividing line.

Right now that line runs between Earth and its breakaway Martian colonies: two sides made of exactly the same stuff, drawing a border straight through themselves. Later on, it moves somewhere far less comfortable.

🚧 In development

This is an early public build. Balance and pacing have been tuned entirely through solo playtesting, which only goes so far — I'd genuinely like to know what a first-time player feels:

• Does the economy pace feel right, or too slow/fast?
• Is the AI a fair fight on Normal? On Hard?
• Is Possess Mode actually fun, or just a novelty?

Comments are open below — every piece of feedback goes straight into the next pass.

ℹ️ Notes

• Runs in the browser — no download, no install
• Some 3D models and concept art were produced with generative AI tools, then optimised, oriented and integrated by hand. Everything else — the game systems, the opponent AI, the economy and all the balance work — is hand-written.
• Made solo. Thanks for playing 

Anonymous gameplay statistics (session length, match result, performance) are collected to improve the game. No personal information is collected. You can turn this off in Settings.