It is only a playable Demo. An old School Video Game type. Back in the 80s style when games were fun. What do you thinking to revival the 80's style game ?

It's my first game, it has a lot to do: hiscore, levels, etc.
The code is still a mess I hope to convert to godot3 and clean the code.
I would like suggestions as to what I could add, you can leave it here. I'm currently on a platform game project but I hope to come back to this one with new ideas.