Based on the Marvel comic book series in which the "Forces of Order" battles the "Forces of Chaos. The two ruling brothers Crystar and Moltar, decided to ally their people with each of these forces. Crystar and the forces of order were made of crystal while Moltar and the forces of Chaos were made of lava.
The Crystal Castle, Crystal
Dragon and Crystal Shatterpult are the toughest to find from the series.
The castle is made up of fairly thin plastic and cardboard
pieces which make loose complete examples near impossible
to find. The weapons that were packaged with the castle
may have varied from playset to playset. The Crystal Dragon's wings
are very fragile, making an unbroken figure tough to find
as well. The Crystal Shatterpult is probably the
rarest of the three. There is a MOC variation of
Magma Man where he is packaged with a red whip rather
than the curved orange mace. A few different variations
of the original figures were included
with the smaller playsets.