A little challenging and a little entertaining, this game is totally a time killer! How to play: Unscrew all the metal plates by unlocking the pins from the board; There are tricky levels, such as keys, remember to pick the key; If you find the space insufficient, just unlock more holes or use a hint. Logic and order are important. One wrong move could result in dead-end. Game features: Customizable plates and screws; Easy to play but challenging to master; Train your brain of all ages; Use