Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics

Very much enjoyed your little, obscure game. Does a point exist as to why you'd want to drop or pick up other shells?

It's not communicated clearly but shells can become "full" and no longer pick up images :)
This is also determined by the shell's size, so a larger shell may spawn in front of the player that catches their fancy.