BrikWars battles are fought across the entire spectrum of imaginable environments. If it can be built, or even half-assed represented with a tablecloth thrown over some books, it's fair game. All that matters is that minifigures get to beat the snot out of one another in the coolest setting possible.
"NEEDS BASEPLATES" - Pesgores
Baseplates are plates that are thinner than normal that can serve as bases for Brikreations or other stuff.
Pesgores insists that all creations need baseplates to be cool, especially battlefields, but no one really cares.
Baseplates come in several varieties of sizes: 32 x 48, 32 x 32, and 48 x 48 are just some of them. Some 32 x 32 and 32 x 48 baseplates have patterns like roads, rivers, and some have raised sections. These last kind are called raised baseplates.