d? ("d-Infinity") is a multi-platform gaming supplement that covers a wide variety of rules systems and includes content that can be universally applied to many different sorts of table-top, live-action, and role-playing games. It is jointly published by Armorcast, Dark Threads, Flying Buffalo Inc., Mindgame Productions, OffWorld Designs Inc., Skirmisher Publishing LLC, and the United States Interplanetary Marine Corps. Each volume will have a theme that unites the material it contains. Each volume will include a self-standing game; new rules, stats, and bonus content tying in with several different game systems new rules; free paper miniatures; tips on practical modeling; interviews with the luminaries of the gaming industry; and more! Rules systems supported include 4th Edition D&D, Pathfinder, OGL v.3.5, "Basic" system, Labyrinth Lord, Mutant Future, Tunnels and Trolls, and Cthulhu Live.