fun and challenging puzzle.
wish there are more multi generation level. (1 generation puzzle feel like it not fit the theme).
I really like when I play 4 generation level and get the solution on the 2nd/3rd generation and have to figure out how to shift it to 4th.
The last level is too hard I give up. ( a little ramp up on difficulty on asymmetric puzzle might help? most of the game is symmetric and suddenly 4 generation asymmetric puzzle appear.)