Monsters have appeared in a few other Lego themes before, usually as enemies.
A few other Lego themes have shared aspects of Rock Raiders, and vice versa.
It is based on the Lego theme of the same name.
The current Lego themes that are represented on the Lego.com products page are:
Mars Mission is a Lego theme that was released in mid-2007.
This page is about the 2010-2013 Lego theme.
Znap is a Lego theme that was produced from 1998-1999.
References and comparisons to other Lego themes are often made as well, for comedic effect.
It is a crossover movie comprising many Lego themes.
Lego Adventures is a Lego theme based on an 'explorer' concept.
