Thanks for the indepth feedback!! Really appreciate it. I'll try to address it bit by bit
>There is a 'shop' button in the menu screen. Is that for in-between-levels XP/'money'/'nutrition' upgrades? Or for future in-app purchases?
I am toying with the idea of having this application be free to download, with in-app purchases for purely cosmetic changes (like Rocket League). Real money purchases to play with a panda bear riding a hover bike, etc. This seems to be the most ethical way widespread adoption and make some $$, but nothing is finalized I have to do some more research in this area.
>Will you be publishing to Google Play (and App Store) in the future?
Yes I am hoping to publish to Google Play and App store. I'll have to keep content ratings and targeting a younger audience in mind, because I have heard that this game could be good for kids. We'll see, again requires some more research
>The rocket boosters at the end was fun and challenging, but physics in this genre of game is already difficult enough - if you could make it work it would be great, but you would likely have to ensure that there are no really bad corner cases
Yes that rocket launcher is chaotic -- I am planning on only using for some levels, in parts of it, and making it forgiving. It probably won't make its way until at least level 3, after the user has gotten more used to the mechanics.
Thanks again! Really appreciated the feedback, cheers