The world around us has been turned upside down because the fascinating puzzle TETRAGON has become 75% cheaper!

https://store.steampowered.com/app/1545850/Tetragon/

Travel to a mysterious universe with unique puzzles, magical mazes and challenging riddles! Change the position of worlds in space, manipulate gravity, help the lumberjack Lucius find his son and uncover the mysteries of this dimension!