The Iron Kingdoms originally started as a setting book for D&D. From there, it grew to become Warmachine, Hordes, and so many other products in a rich world. Now, it's returning to its roots as the Iron Kingdoms: Requiem RPG setting book for 5th edition launches on Kickstarter.
From the campaign:
Embark upon a journey of adventure and intrigue in a world where steam power and gunpowder meet sword and sorcery. Armed with mechanika and accompanied by mighty steamjacks, explore the soot-covered cities of the Iron Kingdoms and the aftermath of the otherworldly invasion of the infernals.
Take on the persona of unique character classes, like the gun mage, who combines powerful magic with a deadly acumen for firearms, or the steamjack-commanding warcaster, who can command 10-ton autonomous machines of war with just a thought. Explore a fantastic world rebuilding itself after an apocalypse as it marches onward with its industrial revolution.
The Iron Kingdoms possess a rich history—and a tumultuous future—full of unique monsters, deities, heroes, and villains.
More than a thousand years ago, the land that is now called the Iron Kingdoms was western Immoren, a mire of warring human city-states. Then came the Orgoth, conquest-driven imperialists from beyond the sea who laid low the cities of man with forbidden magic and changed the face of western Immoren forever. The Orgoth Empire occupied the land for six hundred years before the people of Immoren banded together to defeat the invaders and drive them back across the sea from whence they came. While the rebel armies kept the peace, their leaders convened in a city called Corvis. This Council of Ten drafted the Corvis Treaties after weeks of furious debate, and the Iron Kingdoms were born.
The campaign's closing in on 3x funded with 14 days left to go.