Story:Hexcells Infinite is the third game in the series of ambient logic puzzle games.
It includes a new set of 36 puzzles as well as a random puzzle generator and now supports mid-level saving.
I actually bought this game drm-free already but there seems to be no way to get the 2020 update without drm. This is an issue since the most relaxing thing about it is the hard mode which was introduced by this update.