this is still one of the dumbest games there is. Why do you not get to keep your upgrades? Also, you cant see what the distance you have to beat next time before you buy...
It amounts to dumb luck and picking the exact right upgrades....
DUMB!!! 0/5
MAJOR FLAW: If you put a tile on randomly, if it happens to be right, it locks it into place instead of allowing us to figure out it being right for ourselves...
You have removed what Sudoku is from the game....