LevLion: I wouldn't mind it being an unofficial event and to be honest I would be a little scared of fifty people turning up wanting to play. But I'll have a think about it. Perhaps if I got a couple of GMs to run a few games. I'll see
SFW: It doesn't use d20s, but it dose use d12s, d10s, d8s, d6s and d4s. IronClaw is a success based system. For checks you throw a dice pool.
e.g. "I want to sneak past a guard" you roll your Speed and Stealth VS the guard's Mind and Observation
You can take training in different skills and you could get bonuses based on species, career and gifts but it's a little hard to explain it all over text. It's quite simple when you see it and get rolling.