LYNE is simple and relaxing puzzle game where the aim is to connect shapes and "clear your mind" according to the developers.
LYNE isn't really addictive but it is indeed quite soothing with simple gameplay and relaxing sound effects. The aim is to simply connect all of the shapes until they fill the entire board. Puzzles are auto-generated on a daily basis meaning no two games are ever the same.
Refreshingly, there also seem to be no annoying ads or in-app purchases in Lyne either.