I was quite surprised by the unannounced release of this toolkit. After buying it I must say that it almost completely covers the Transformers, with their sometimes unique technology. Included are feats that allow the creation of combiners, pretenders, triple-changers etc. The only missing element are the headmasters (and all other "masters"), but their inclusion would probably require more rules to make them work.
This high quality pdf is a must for every transformers fan/spycraft gamer.
For it's price it includes more than enough for several campaigns filled with gigantic transforming robots.
[5 of 5 Stars!]