Thrusterz

An orbital mechanics flight game. Pilot a rocket in real time — a fuel-limited main engine and side thrusters for rotation — under real Newtonian gravity, and hit your destination. World 1 builds up from a single launch to interplanetary transfers, gravity assists and multi-moon tours; World 2 adds rockets that come apart: staging, payloads and the debris they leave behind.

Play

No build step. Open index.html in a browser, or serve the folder:

npm start            # http://localhost:8080

A first visit (no stars, never been past it) opens on a landing page: what the game is, Play now straight into Training's first mission, a way to skip Training, and a restore code for pilots on a new device. The pilot name is asked after the first mission you win, when there are stars worth saving. ?landing shows the landing page again. The page's text is plain HTML in index.html, so search engines and link previews can read it.

The menu shows one world per tab. World 1 is open from the start; each later world opens once the world before it has earned enough stars (World 2 needs 50 of World 1's 90). Every mission inside an open world is playable, and the first one you haven't cleared is marked Next up. ?unlock opens every world. ?level=N jumps straight to mission N, counting across all worlds in menu order.

Controls

Key	Action
Space (hold)	Main engine
A D / ← →	Side thrusters (rotate)
W S	Throttle up / down
G	Gyro assist on/off (auto-stops spin, but caps the run at ★★)
E	Drop cargo, or drop the spent stage and fly the next one
, .	Time warp down / up (warp drops to 1× while thrusters fire)
V	Cycle reference frame (auto / inertial / each body)
F / O	Follow ship / overview · mouse wheel zoom, drag pan
[ ]	Shorter / longer trajectory prediction
R · Esc	Restart · pause

Touch devices get on-screen controls: rotate on the left thumb, BURN on the right, warp / frame / gyro in the middle. Pinch to zoom.

On phones the game plays in landscape and fullscreen: a portrait phone gets a "rotate your phone" screen, and leaving fullscreen, rotating back or switching apps pauses the mission. iPhone Safari has no fullscreen API for pages, so there it's landscape-only; Add to Home Screen launches it fullscreen (via the web app manifest).

New players get big contextual prompts ("Press and hold SPACE to launch", "Still spinning! Tap D to stop", warp, reference frame). Each disappears once you do it, and stops appearing after you've mastered it.

This is the beginning of the README. Read the rest at the original. Read the full README ↗