In addition to the simple walls and floors, I've decided to add other tile types. Also I've completed a fairly simply texture contouring process that will allow more detain into maps, behold.
Trenchs, good for making shallow creeks and ponds. Domed cielings that make arches in places.Combine trench and dome to create caverns
Sex. Sex.
MUSHROOMS!
Big leafy ones.
I want to play Ocarina of Time AGAIN :O
Added a link in the first paragraph that will show the texture contouring process. It only use a 2-color bitmap for its alpha masking, and then I shrink the image in-game to create the smoothness. Don't ask me how, it works and I like it.
I love those massive mushrooms there mate.