velluz-dev/Odyssey13 ? reverse-engineered prompt

Build me a 2D space mission design game where I can put together a rocket, pick either the Moon or Mars, and see if my design can actually make it. I want to click parts into a stack, have the game show live stats like fuel, thrust, delta v, and whether the rocket can lift off, and then be able to launch it to see a realistic mission play out. The flight should use real orbital timing, including a proper transfer to Mars and a Moon mission that zooms into the Earth Moon system. If the rocket is wrong, I want it to fail in a believable way and tell me exactly why with numbers, like not enough delta v or weak liftoff thrust. Please include a working example build, a result screen for success or failure, and a simple polished space themed interface. If you need current docs for anything, look them up online first.