Artifact Guesser

Artifact Guesser is a guessing game built on museum open data. Its about page says the collection began with the Metropolitan Museum of Art's API, and the home page now counts more than 230,000 artifacts from 10 museums. Today's run drew on the Cleveland Museum of Art and Peru's Museo Larco, with objects from etchings and manuscripts to Nasca pottery.

The daily mode, called Today's Run, is a set of three artifacts that is the same for everyone on a given date. For each one you look at the photos, click the country you think it came from on a world map and set a year on a slider that runs from BC to AD. The country and the year are each worth 100 points. The answer then shows the object's title, place, date, medium and museum, with a map of the borders of the world in that year.

After the third artifact the summary gives your score out of 600 with the date and a share card. You can play without an account. Signing up saves your score to the daily leaderboard.

The rest of the site is open-ended. There is an unlimited single-player mode, multiplayer lobbies, a live chat beside the board and a searchable list of artifacts. The project calls itself an alpha build and takes feature requests on its subreddit and Discord.

It suits players who like map-and-year games such as TimeGuessr but would rather date an object than a photograph. Three rounds take a few minutes.