I've been a fan of the Iron Kingdoms since Privateer Press released The Longest Night, part one of their Witchfire Trilogy of adventures for D&D 3rd Edition, in 2001. The combination of steam driven battle mechs with high fantasy sorcery scratched an itch I didn't even know I had. I ran the adventures for my gaming group, though our adventures quickly drifted away from the scripted story, and purchased various editions of the Warmachine and Hordes rulebooks. I've even purchased the main box set for the customizable card game and the Iron Kingdoms inspired adventure board game The Undercity. I also own all of the Iron Kingdoms RPG books.
Sadly, as is too often the case, I haven't had as much time to play games in the Iron Kingdoms as much as I'd like to and this is one of the reasons why I'm excited that Privateer Press is releasing new editions of Warmachine and Hordes. With the new marketing push, maybe I can convince my gaming group to give the Iron Kingdoms RPG a try.