Rules!

The player is given a board made up of 16 tiles, which contain objects or animals and a number on the top-left corner. They are given a rule in each level, and for each level they complete, the player must recall past rules. For example, when a player finishes a rule for level four, they must follow the rules from level three, then two, and finally one. Players must solve each level within a limited amount of time. To fit the small size of the Apple Watch, the gameplay was reduced.

The graphics, according to designer Agnes Lison, were intended to be vector. Concepts for the icons were developed by Marcel-André Casasola Merkle. However, Lison thought it looked "flat" and opted for a mosaic-like look based on pictures on her wall.

Rules! released for iOS on August 6, 2014, and for the iPad on August 20, 2014. On April 24, 2015, Rules! became the first game to be released on the Apple Watch.

The game has a Metacritic rating of 88% based on 8 critic reviews.

Gamezebo wrote: "Rules! is that sort of lightning in a bottle that only comes along every so often. , and not just because both games so gleefully abuse exclamation points." IGN Italia said "Rules!