I haven't done a whole lot on it recently (been tied up with Work, Armageddon, travelling and other things) however I have recently started experimenting with pseudo-bumpmapping. Check out the screenshot below:


The effect of it isn't perfect yet, but the idea of it is to give the walls some actual depth in order to offset the Wolfenstein 3D feel you might get from having square geometry. This week I will try putting in some serious time on it and making it more playable.