So I have this project I’ve been working on that is by no means complete, but is essentially playable. It started with following along with this tutorial and then kind of expanding on that. A fun mechanic in the game, which you can notice as you ascend throughout the space station levels, is that the force of gravity gets lower the higher you go (as it realistically would in a station configured for spin gravity). On the top levels you really moon jump around!
Of course I added a few more things like monsters, items, shooting, hit points, energy and the music/SFX. At this point really just need to see about filling out the levels with more obstacles and baddies. Check it out here.