A great app, but...
I love this app very much. Unlike many apps, youre not just sitting there mindlessly pressing buttons. Youre actually thinking! Not only can you play levels, you can also make your own inventions. My only problem is that, as several other people pointed out, the game does not save your progress. Youll spend a really long time working your way through for nothing.
Horsigirl04 about
TinkerBox