Prison Block, The second of three Lego SD puzzles created by Josh Reynolds. This one is definitely more difficult with an even better reset.
From the designer:
This is my second venture into LEGO puzzle box design, it's a step up from my Sand Castle Puzzle Box, bigger and more complex! There are some unique mechs involved as well which I haven't seen done before with LEGO. I'm quite proud of it and hope it will be a fun and satisfying solve!
Prison Block Puzzle Box is an 18 step puzzle box with a prison theme. The goal is to "Open the gate, trigger the alarm, and free the jailbird from his cell!" Then return everything to its original state.