This game is unfinished and the only thing to do is fly around and trade resources between
planets.

How to play:
Use the arrow keys to fly the ship and use the mouse to trade on the planet UI.

You start off on planet Earth. Click the Take buttons to get some resources, then click Launch. Fly to another planet (use the minimap to see other planets) and land on it (your ship needs to be facing so that the thruster lands on the planet otherwise you will crash). The UI that shows up will show the type of resource that the planet produces click the Buy button to buy that resource (you can buy other types of resources, but there's probably no point) and trade one of your other resource types for it. Then fly to another planet that produces a different resource type and buy it. Repeat until bored. You will need to periodically return to Earth to unload your cargo and refuel.