Figarooo
Building a map guessing game where you're given a map with the labels/axis redacted, and then you have to guess what it's a map of. e.g. the map would be average height by country, but you would just get a map where countries like The Netherlands were the darkest, and then you'd have to try and figure out that it's average height! The hinting system for it is a bit work in progress (trying to tune the difficulty and feedback from hints) https://figarooo.com/