I created a simple playable demo using the Pixel Movement library. The library supports BYOND's isometric and three-quarter map modes, making it east to create environments where you can move in three dimensions. This is an under-utilized feature that I'm hoping to draw attention to. It's also for a game I'm working on - I'd like to see if anyone has performance issues with drawing all of the turfs, overlays, outlines, shadows, etc. at 40 fps.
The demo is an executable only, but there's hardly any code in it for using the Pixel Movement library. This is basically how it works out of the box.
Hub Entry: http://www.byond.com/forum/Forum_account/PixelMovementDemo