If anyone plans to continue work on this project, I strongly suggest giving the ground and "cave" tiles some more variety. The tiles at the moment are fine as they are, but without some kind of alternative pattern to work with them that are complimentary, I imagine people would get pretty sick of seeing octagons and squares everywhere. It would be nice to give JCSers the option of enhancing the appearance of the solid areas without having to do the oh-so-cliché method of filling them with holes.