At the moment, not really. The zips are the exported binaries of the game. There is a .p8 file included so if you want you could use PICO-8 to load in the project and export assets that way.
Generally my uploads are binaries for offline play on various devices and if people happen to like them, I’m open to uploading a seperate tileset project, which can be bought. (Like I did it with clock mage, and the void break tileset).