Okay Zachtronics games look awesome. I'll definitely have to try them out. On the other hand, my experience with games "like this" are mostly free mobile games

Okay Zachtronics games look awesome. I'll definitely have to try them out. On the other hand, my experience with games "like this" are mostly free mobile games or other little browser games. For a paid game I would totally expect to be able to save multiple solutions.