In a CNN Money article, IBM System x and BladeCenter Servers are announced as the chosen systems to power Fallen Earth's world:

Icarus Studios: Icarus Studios' licensee Fallen Earth, a massive multiplayer online role-playing game set on a post-apocalyptic Earth in the year 2154, will run on IBM BladeCenter, IBM System x and IBM System Storage. The artists, programmers, and writers at Cary, North Carolina-based Fallen Earth are building the world and crafting the stories that will unfold in their new title, currently in development. The game will be on display at the Austin Game Developer's Conference in booth 216.

"Icarus and Fallen Earth are relying on IBM systems along with technology from several IBM Business Partners including Aria Systems, Vivox, and OGSI for the development of Fallen Earth," said Jim Hettinger, CEO, Icarus Studios. "IBM brings deep gaming industry knowledge and an understanding of our business model. IBM also brought in the right business partners to provide stability and reduce risk around scale, support and management of the critical launch of a new MMOG like Fallen Earth."