Haha! It is perfectly fine, I know that the code is yours, I just misunderstood what you had meant by the use of the pick up boxes.
And more so what I was commenting on was the fact that many parts of the game were very similar to that of Balls in Space, For example the doors of the level selection, the pickup boxes( I assume that is the ammunition to shoot?), level design just seemed similar (hidden platforms, overall design, etc.)
I know all the elements listed are found in a lot of games, It's just when I saw the other comment about it, and then I played it, I understood why the comment was made in the first place.
You have your own story line, and with some polishing it seems like it could be a really fun game, so I don't mean for you to take any offense, and I don't mean for my comment to be misinterpreted into meaning that you are copying anything. So I apologize that it was the reaction received by it.
Anyway, as for ways to improve on the game, I feel like some of the graphics seemed kinda mismatched, or needed a little more polishing to them to bring more life into the game. Although hard, I think the final level was my favorite one, The best part about it was the boss.
I also hope that you could see this criticism as a positive thing, because as popular as Balls in Space was, anyone who is familiar with the game especially out in the Kong world, will make similar comments.
Maybe one more suggestion would be to add something unique to the game, i.e. develop the Element aspect out a bit more. From what I played, it seemed like all I was going to do was go from the start of the level to the end of the level several times and then kill a boss.
I see the story developing out a little bit as to the recovery of the elements and putting things back together, but do the elements give you any special powers? Are there any unique characteristics about the player? Any unique skills or changes to make the game stand out more?
Anyway, I hope to see more from you and I look forward to when you've finished this game. Good luck!