Few who dwell in the Ninth World know of the greatest achievement of the ancients, for it rests—imperceptibly, despite its vast size—on the very edge of the sun itself. The prior worlds were mighty beyond conception, but even for them, this Engine is a work of staggering proportion. What incredible threat to the sun, our world, and all the bodies of our solar system compelled them to such an audacious feat? Has that threat been ended? This book contains: A host of new creatures suited to life on and in the Engine of the Gods. Dozens of new cyphers and artifacts, plus augmechs—strange vehicles that can be piloted remotely to explore the Engine or used to reach other locations in the Ninth World or across the solar system. A map generator that lets you easily create infinite regions within the planet-sized Engine of the Gods. Two complete adventures. “Waking the Mega” introduces augmechs, as the PCs discover, revive, and ultimately pilot one against a titanic threat. “The Sun Doth Move” is a lengthy adventure with world-shattering consequences that can make an excellent capstone to your explorations of the Engine of the Gods—or to an entire Numenera campaign!