I can't look at the program right now because the site is non-responsive, but DCPU-16 has a defined spec right now for video, based on a leaked .jar file from the actual game. Someone named Rick took the leaked .jar, decompiled it, and wrote up a video spec based on it. The current spec can be found at https://github.com/gibbed/0x10c-Notes/blob/master/VirtualMon....
The bitmapped fonts were actually discovered via a leak of the 0x10c code. We'd certainly thought of it before then, but the leak was what sparked the implementation. This version of Minesweeper appears to overwrite the default font with its own custom graphics.
