Before you start
The Clock Tower gems
What you need
Three gems, the Obsidian, Amber and Crystal Balls, and the room with three clocks: the past, the present and the future; the present is the middle one, and one guide puts the past on the left and the future on the right. The goal is to make the middle clock read twelve o'clock.
How it works
Each clock has a tray. A gem placed in a tray moves the middle clock's hands back or forward by a set number of hours, depending on the gem and on which clock you put it in. One guide says the hands start in a different place each time.
Work it out
Note the hour the middle clock shows, then pick one gem for each tray so the three changes add up to the hours between that time and twelve. Use the table below.
The reward
When the middle clock reaches twelve it opens and gives you the Gold Gear. Two guides add that you combine it with the Silver Gear from the tower's gear room to make the Chronos Gear.
Gem values
| Gem | Past | Present (middle) | Future |
|---|---|---|---|
| Obsidian Ball | −2 hours | +2 hours | +4 hours |
| Amber Ball | −3 hours | +3 hours | +6 hours |
| Crystal Ball | −1 hour | +1 hour | +2 hours |
Example
- If the middle clock reads five, you need seven hours. Crystal in the past (−1), Obsidian in the present (+2) and Amber in the future (+6) add up to +7.
- If it reads eleven, you need one hour. Amber in the past (−3), Obsidian in the present (+2) and Crystal in the future (+2) add up to +1.
The other puzzles
The mayor's statue and the fountain
- At City Hall, the mayor's statue hands you a book. Placed in the slot by the electrified fountain, it lets you take the compass there without a shock. Give the compass back to the statue for a Battery, which powers the elevator to the substation.
- Guides name them the Book of Wisdom and the Future Compass, or the Bronze Book and the Bronze Compass.