The listing, GridMath (Steam Key) has ended.
https://store.steampowered.com/app/1451300/GridMath/
ABOUT THIS GAME
GridMath is a challenging mathematical puzzle where you need to find a space in the grid for each number.
The challenges are divided into 5 blocks with 20 levels each.
Play the levels of each block in the sequence you want.
Choose between different colors to play at any time.
20 achievements to achieve.
You only need the mouse to play.
There is no timer, just relax and complete all levels in your time.
Good luck!