Lock Quest: The Clock Tower

The clock tower is open!

You climb the stairs and give the giant pendulum a push. Tick. Tock. The great bell rings out over the whole town, right on time.

You are now a Lock Master. Go tell your teacher!

Your mission

The clock tower has stopped, and the door is locked five ways. ELAPSED TIME is how much time goes by between a start and an end. There are 60 minutes in an hour, so time does not work like ordinary numbers. From 2:50 to 3:10 is only 20 minutes, even though 310 take away 250 is 60. A mouse lives behind the big clock face, and every clue in the tower is something it left behind. Look closely and work together.

How to crack a lock

• Pick any lock from the menu at the top. You can solve them in any order.
• Read every clue before you start. One clue alone is never enough.
• Use scratch paper. Draw pictures, make lists, and cross things out.
• Tap the buttons to build your answer. Then press "Try the lock".
• A lock will not tell you which part is wrong, so be sure before you try.

My badges