i agree that no undo button is best in this case. i was actually expecting to reset to the 1st level when I made a mistake on the 2nd one. keeping you on the same level makes it comfortable enough
I love the windows 3.1 like UI. Seems like a solid game. I'm not a incremental games player, but I feel like playing more of this one. Wishlisted!! Having keyboard shortcuts would be a must for me to buy it.