I haven't found a thread on this yet although I've talked to a few of its players on gaia. Mekton, MektonII, and now Mekton Zeta is a tabletop rpg made to play ANY type of mecha anime style game you can imagine.
Check it out if you're into rpgs, and check it out of you're into mecha.
Mekton Zeta boasts a system that allows you to make any type of mechanical structure from a small pocket knife to a giant space cruiser.
To top it off, third party companies release a series of inexpensive pre-done mecha from popular anime like Votoms, Gundam, Evangelion, and more to be used with Mekton rules.
Here are a couple of links you could check out. I'll post other links soon.
http://www.talsorian.com/catmz.shtmlMekton Info on WikipediaI want to know if anyone's played this rpg before and if so, how did you like it?