Study Guide

Mortal Engines Tough-o-Meter

By Philip Reeve

Tough-o-Meter

(2) Sea Level

It's a good thing we rank Mortal Engines at Sea Level, since the giant traction cities trundling over the countryside can't operate on rougher terrain than that. Once you can wrap your head around what these massive contraptions look like, it's smooth sailing from there. Need a little help picturing them? Check out our Best of the Web section for some nifty photos and illustrations.