Sweepers are invisible, and we can see only their footprints.
Touch the square to turn it into a stain.
The sweeper is moving towards the nearest stain or to another sweeper to clean it up.
To open next level, everything has to disappear - squares, stains and sweepers.
July 2015
Last updated on Jul 10, 2015
This release includes minor bug fixes and general improvements. Update to the latest version for the best experience.
