Sunset Archipelago

Before you fly

This is a digital twin of a future airpark — an experiential entertainment business that does not exist yet. Getting it off the ground takes community participation and demonstrated interest, and that is what an account here is for. Sign in and you are counted.

What an account gets you

Up-to-date downloads of the sim repo — load it into Codex, Claude Code, or whatever you build with.
Build your own worlds, airparks, games and adversaries, all in natural language.
Submit your work on our Discord. If it ships as a world option you get your name in the credits and entry into raffles and awards.

We are giving away the physics, the aircraft models and the game system. Not the skunkworks, and nothing proprietary. The download is licensed for building and sharing — not for reselling it or building a competing product. You accept those terms when you download.

Why we built it

X-Plane is the commercial real-physics simulator of merit — but it is closed end to end, except for one narrow, tightly controlled interface for plane and scenery builders, and there is no way to do any of it in natural language. We had to build this from the ground up to get the idea into simulated reality. That is the necessary first step before real reality can get funded.

Create your pilot account

No confirmation email — you are in straight away.

or use an email and password

Already have an account? Sign in

Want to try it first? Go fly — you can sign in any time from Settings.
We confirm your email so you can get the downloads; we do not sell or share it — what we collect.

The Physics Package

Nothing here is canned animation — every interaction runs a live engineering model. What you fly is what the model measured.

The aircraft are engineering models, not game assets. Each one is built parametrically in our CAD engine, cut into real parts, and measured: mass & balance summed from the actual component stack, stability from the measured neutral point, aerodynamics benched per flap setting into that ship's own flight pack. The sim consumes those packs verbatim — the plane you fly IS the datasheet.
A 6-DoF flight core at 200 Hz runs server-side for your session alone: per-detent flap aerodynamics with trim solved for every configuration, a stall-alpha governor, an electric powertrain with thermal derating you can watch on the MOTOR gauge, and landing gear as spring-dampers with a structural yield fuse — bend the leaf spring past its limit and that flight is over.
The water is the same equation twice. The waves you see are the exact wave function the physics samples — the seaplane's floats plane, spray, and dig into the same water the render draws.
Launches are energy balances. The catapult and the drop-weight tower solve their force live from your ship's mass and its own release speed — no scripted launches.
Weather is a gust model, not a slider. Wind, gusts and turbulence feed the same core that flies the plane.

Using a game controller? PRESS ANY BUTTON on it now to connect it.

WSthrottle up / down

↑↓pitch — nose down / up

←→roll left / right

ADrudder left / right

FRflaps down / up

12elevator trim up / down

C cycle the view

Press Settings to change the weather, calibrate a joystick, or set up head tracking with a webcam. ⌨ Keys shows every control.
Click ✈ Cyber Hangar to switch planes.

▶

paused at the menu — the world holds a still frame until you fly.

BEFORE YOU FLY

NOTE: none of the park safety systems are activated in this sim. It’s meant for you to feel the realism of the fast physics calculations, CFD proven equations running at 200 Hz modelling real airflow over real 3D surfaces. Enjoy!

You will notice a significant “jitter” in the aircraft in chase mode, worse when zoomed closer in. This is a consequence of REAL PHYSICS calculations being made on a remote server, while the rendering takes place in your browser. This is a conscious choice, rather than making people install the sim on their computer, so that the maximum number of people can easily have a realistic taste of what flying in our airpark would look and feel like.

YOUR CONTROLS

for a more realistic pilot experience. Works with a standard webcam.

No joystick? Here are two we recommend: the Logitech Extreme 3D Pro — cheap and excellent — or the Thrustmaster T.16000M FCS.

Otherwise, get ready for a Full On / Full Off stick with the arrow keys. Tap until you get the flight path you want — don’t hold down. Not an unfun challenge: try getting the floatplane airborne off the catapult!

Also, most civilian aircraft are not designed for fun — you are going from point A to point B. Set your trims at cruise and you’re done. Real aerodynamics and lots of throttle change and manoeuvring means you’ll be using the 1s and 2s of elevator trim a lot if you want to take your hands off the stick and have her stay true — especially when engaging flaps on approach (F extends, R retracts).

TRIM

When you increase thrust and speed your pitch changes too — adjust your trim rather than fight it with your stick.

That’s the elevator trim in the light there — the E bar.

Set it at cruise and you’re done. In airpark flying — constant throttle changes and constant manoeuvring — you’ll come back to it every time the power changes.

1 / 2 on the keyboard, X / A on a controller.

SUNSET ARCHIPELAGO

Controls

Before you fly

What an account gets you

Why we built it

Create your pilot account

The Physics Package

One more thing