Chaos Marauders was card game designed by Stephen Hand, illustrated by John Blanche and was published by Games Workshop in 1987. A second edition was published by Fantasy Flight Games in 2009.
First edition contained many Warhammer elements which are now considered pure heresy. The Chaos horde presented in the game was mix of the titulat Chaos Marauders, beastmen (Malal worshipping beastmen) and few kinds of greenskins - in fact, lore of the game implies that orcs are the core of the Chaos forces.
Nothing special yes? But... I checked the second edition. You know, the one published in 2009. And it actually kept all those elements!
https://www.fantasyflightgames.com/en/news/2009/10/2/flavours-of-chaos/ https://www.fantasyflightgames.com/en/news/2009/10/15/who-wuzzat/ So, this game was probably the last bastion of the old, decanonized elements of the early Warhammer Fantasy lore, long after they become expelled from the mainstream Warhammer.