The listing, Sideral (Steam Key) has ended.
https://store.steampowered.com/app/1095070/Sideral/
ABOUT THIS GAME
Relax...Think...Water...Sand....
Sideral is a game without instructions, without words, first part is to understand what you need to do, then try to solve so many logic puzzles. Only you and your mind will be able to discover the misteries of each part of Sideral Islands....
Sideral has been developed by one single person, with love.