Well, I have updated the engine to support larger maps, and to be much more efficient. I can now get around 200-500 frames average (200 if lots of lights and 500 if darkness) without the frame limiter on, and I am now going to work on coming up with some ideas to make a game out of it! Click here to see the current work in progress source, although it is NOT open source, just merely viewable for interest, or click here to download the binary.
Update! Added some new sprites, and added different rocks and such.