So actually there isn't a lot to do except enjoying a break. If you press A near other objects, the panda does different things like changing the music, playing video games or drinking coffee.
I just made BubbleWrapGBA because I couldn't make it work with GodotBoy. It's a tool to wrap a GBA file with EmulatorJS to an exe file. Thanks for your help though!
That game is so amazing! When I first turned the camera I was mind blown and happy like a little child lol. Love everything about it, the awesome idea, the cute sprites, the crunchy music, the length of the game and the difficulty. 10/10 Game, nothing I can complain about.
It is possible to create a standalone game with an exe file that can be executed anywhere. But it is not recommended to use it since it's not guaranteed to work when shared to other computers. Only the installers are stable enough to be shared.
If you still want to do it read the last bullet point about standalone executables in the "readme" file under Test & Build.
It will be possible in the future to create installers for the desktop variants and (specifically for Mac) sign with your apple developer id. I'm currently working on this.
It is indeed possible to save games. Try e.g. BubbleFrog which is preloaded. It saves automatically after each level and when you continue, you'll be in the correct level.
Considering the .sav file: it might be possible to export them in the future, if this is a requested feature. But it's unclear if those files will work in other emulators.