Cosmic System is a cancelled NES / Famicom Disk System sci-fi RPG that was in development sometime in the late 80s by WaveJack / Imagineer / Atlus. Only a single screenshot was published in Famimaga magazine (April issue) when developers made some kind of contest asking to the readers to send character designs that would have been used for their new game.
It seems this contest was quite a success: they received 23.141 drawings of which they selected a bunch of winners that would seen their designs remade in pixel art for the project. Something went wrong during the development and in the end Cosmic System was never released.
There are probably hundreds of lost Famicom games we’ll never seen a single screenshot of, so we can say we were already lucky with Cosmic System.