Well, big only means "something with more than one system".
More specifically, a game where there is breathing room, and more than one way to reach the other side. I'm sure Geo will find something appropriate.
The ban on the Crystalline trait is really a way for me to avoid being dastardly (again): that component is amazingly powerful, especially if the target does not quite know how it works. If you are not at all ready for it, it can be a killing blow in itself: invulnerable vessels are much worse than vessels making every single hit count. Primitive initiated me to the mysteries of the Crystal Amour, and that thing sure is deadly... just ask Asmala in Pairs.
