make mapable controls. this is impossible to play on my laptop

For a start, it's pretty damn good.

sadly it is lacking quite a lot, for one there is no sound effects for getting hurt.
Maybe if you added those it would seem a little more professional.
I would also suggest making the cloud looking sad when its damaged (?) but thats just me.

You've done really well making this game, I would suggest making the lives appear in front of the cloud when you go over it and maybe adding some more upgrades.

Other than that, this game fully deserves these 5 stars.

Its a cool little game to pass time. I would like to see more from this great looking game. I would like the cloud to be more animated. Also the rate in which you can fire stars could be a bit higher.
I have always loved streamlined and vibrant games so this caught my attention. To me though streamlined and vibrant isnt enough. There should be a differentiation in enemies and the level should change a bit. Also you should animate the cloud when it takes health damage. Maybe add more upgrades and use the coins that are earned in game for upgrades that can be bought at the main menu. for example, you could buy an upgrade that lets you start with more life or a "burst shot of starts".
I only played the game a few times but i got far enough to know what i wanted out it that it was lacking. I think you are a great game designer but you just need a few more ideas added to this one to give it more depth. good work though. Repost maybe with a few innovative additions that will make it shine amongst the rest.