 Along with the official sourcebooks themselves, Games Workshop and its subsidiary Forge World has released supplementary material and model kits that can only be used with the Apocalypse ruleset.Most notable of which was the plastic Baneblade super-heavy tank boxed set released by Games Workshop at the same time as the Apocalypse rulebook.At the time, the Baneblade was the largest plastic kit that the company produced; Prior to that time, all large Warhammer 40,000 tanks were produced only in resin by Forge World.