This is an SD puzzle box adventure that is an incredible work of 3d printed engineering and quite mind blowing! Definitely one of the coolest and most fun puzzling experiences I've had in my 6 years of puzzling! The theme, mechanisms, and overall journey is just incredible! So needless to say, having to part with this amazing puzzle was not an easy choice but due to the price and being on a budget I need to solve and sell. I hope it finds a new home and is cherished and appreciated for the marvel it truly is!