An amazing expansion to a solid game. Because I somehow didn't notice this previously, I was trying to make the Techbook for Mekton 2 work with Zeta. Aside from the difficulty of that, this book is simply so much better. The sheer variety of options lets you build nearly any mecha you can think of. And if that isn't enough, there are several pages of optional rules, just in case you want to do something really out there. If you can imagine it, then there is probably some way to make it in Mekton Zeta Plus. If you like Mekton Zeta, but think that the options for building your mecha are too limited, this is the book for you.