You are flying around space and suddenly your ship is out of fuel, the only you can do is get the “energy balls” which are laying over planets, to open a portal which teleport to another planet and move on to arrive at home.
Prototype made with Unity3d and C#. All trees are procedural positioned every play, and changes its dimensions and colours. The energy balls are in random places too.
Catch energy balls to open the blue portal (Move with A – D or arrows)
Try it here