If you can, please add a background! Maybe each level it can have a new background, with things on the sides that you can interact with to get better stuff in the game! I think this game looks awesome, and can you tell me how to purchase this software? I can't find it anywhere.
If you are talking about SmileBASIC, then you have to download it off of the eshop. The European version is not currently available last I heard, I hope that does not cause any problems. The game in the screenshot is"Revenge of the Gods", check out my previous posts for the key; it is a game I produced for SmileBASIC. Either way, good luck!
Also, I did not originally think about adding backgrounds. It sounds like a good idea, so I might look into it when I produce more levels and story so the backgrounds fit with the game. Thanks for the suggestion!