I built a "Shotguns" mode for GunGuesser (like geoguesser but for guns).
I built GunGuesser, basically GeoGuessr but for guns. More importantly, I made a dedicated Shotguns game mode for communities like this to enjoy.
You get shown a Shotgun, and are tasked with pinning where it originated, the closer and faster, the higher your score.
the site is called: GunGuesser.com
Please let me know what shotguns to add, the pool should be larger!