Hi so since you asked ill be extremely nitpicking and going over some details I would add/change. But before that wanne let you know you made a real fun game and for the short time you had you did a really good job. For the feedback:
- Simple things like not resetting the level after failure: If I place the door in the correct place or what I think is the correct place and then just fail the shot it shouldnt reset the door imo. You have the reset button so in case I want to reset I can just press that. I would love that you could drag more of the level making it even more puzzle like, right now its place this and try to shoot correctly wich works for a few levels but I dont think youll be able to make a fully fledged game out of it. Maybe by adding new domains or smth you can switch up what you move or do. Of course a lot can be added for what manipulates the ball but ill let that up to you.
- Ofcourse some music would be fun, it was not necesarry for this entry but it does make a game come alive. Also the overall UI could be more attractive, for a gamejam it looks great but if you want to sell this youll need to attract players and you wont have the luxury of people automatically playing it like in a gamejam.
- The star system, I would maybe implement it otherwise but thats just my opinion: Instead of making it 3 stars to clear the level just count the stars someone got. Then make a level menu (for the issue you got with level 6 being to hard) and let the player pick wich level he wants or doesnt want to play. You can then use the amount of stars to lock certain new levels or lets say you need 30 stars from the total 50 available to progress to next level. This would also let you make harder levels without making the player feel like hes stuck.
- The physics felt fine so I wouldnt change much about that tho its true the bounce doesnt always represents the force I used (its very bouncy).
- For release Ill be honest at this stage I wouldt spent money on it (wich is normal since you only had 2 weeks) but for mobile go for android and for pc go for steam. Android is like 1 time 25 bucks and Steam is just the goat. You do need to pay 100 bucks upfront wich youll only get back after youve earned 1000 but steam does a lot more. It can arrange the correct prices for you so it fits certain countries economy and most of all steam keys. Steam lets you sell your game on other platforms as long as you keep it at the same price as on steam and steam wont take a cut.
I hope this helps, feel free to ask me any questions and please dont 1 star me :)