Really well done 3D platformer with a classic feel to it.
The gameplay is simple and straightfoward and feels pretty solid. I really like the way in which you interpreted the theme by allowing the player to run 360 around the planet. I've always thought that sort of movement in video games is really cool.
The art and visuals are really well done too. The character has a bouncy, energetic feeling to them and the outline shader on the 3D art gives the visuals a clean look and are very clear despite only being black and white.
One very (very) minor thing I would suggest is to add the camera controls to the description of the game page (or in game as well). I admittedly struggled at first on the first level because I didn't realize you could move the camera. I felt pretty silly afterwards, but the game also felt a lot better once I realized that lol.
This is definitely something I could see being expanded upon, either with more levels or a larger world to explore. Well done!