Yeah and there's been some discussion of D20 mecha rules recently on the OGL-D20 mailing lists. I'm guessing something will come along before too long.
Personally, I would go the Jovian Chronicles route. The construction system allows one to build everything without worrying about 'ok, I choose a chassis, then try to stuff everything in it'. Plus I like the Silhouette system a tonne... rules cover just about every situation and can get pretty detailed if you wish. }
Man if there were some sort of D20 Mecha Rules published (or something with the Robotech or Macross line) I'd force my players to play it till there eyes bled.
I am going to try to run a Jovian Chronicals game. I already ahve the rulebook and just bought a GM book. To those of you who have played before I have a few questions.
How is the combat? I read through the rules but still don't have a firm grasp of them yet. Is it slow? do you get more attacks per round as in dnd?
Have any of you made other exo-armors? how did they come out?
what is the the real difference between exo-armors and exo-suits?
Any other information that you care to share I would be interested in.