This untitled rock climbing game was once in development or to be published for the Sega Saturn by a rather obscure company named Netyou. The image you see in this page is the only remaining proof of its existence, it seems impossible to find any more details about the game or its developers. The screenshot was found by Yakumo in a japanese gaming magazine and posted in 2010 on the Assembler Games Forum. If you’ll ever find something more about this cancelled Saturn game, please let us know!
Update: by looking at this video (@10:14) it seems the game was released on Playstation, not sure what the title is