So I built 2.
Sci-Fi Fort vs The Tower of Fantasy
The defenders of Sci-Fi Fort include some of the nastiest members of the Warhammer 40K universe, some of the most noble defenders of the Old Republic, the ever gallant Starfleet, and a few other random assorted aliens and mercs.
A slightly different view
Chaos, Nids, and a Federation Runabout
What's that scoundrel doing over on the ship?
Hobbits sneaking into the undefended back of the fort
The forces of fantasy ride out!
The mighty Mumak passes through the gate.
The paperback tents provide shelter for the citizens of fantasy land.
Lucy checking out the fortification for herself.
Side view of the Fort and the Tower
Alice would like everyone to just get along.
I'm a little jealous of the authors who are entering, since they have multiple copies of the same books (their own) which makes building so much easier!