I would definitely play an upgraded version.
Some ideas from my side:
- Make a boundary around your galaxy or generate it prodecural, so that it never ends.
- Improve the key instructions by giving each key a different color. Right now ever key looks the same and you get lost when they are coming really fast.
- I don't know if the instructions are bound to the music in the background, but it would be nice if they match (like guitar hero and other such games ;)
If you have an updated version, reply to this comment and I will have a look.
Btw. it would be nice if you also rate my game, if you haven't already ;)