LOOP is a puzzle about reconstructing images of intersecting loops with a concept similar to a jigsaw puzzle. The design is split up into different hexagonal pieces that have been mixed up. The player needs to put it together again by watching how the lines connect and how the different colours match. Two pieces of the design are swapped by tapping or selecting them. Later levels introduce pieces that can also be rotated individually.
The game contains a set of 100 levels unlocked right away, as well as one billion randomly generated levels based on a seed number. There is no timer, no score system and no pressure to complete the puzzles. The game has a colour blind mode.