My LD48 #12 entry. As so often, I didn't really finish. Most of my efforts went into things I hadn't planned like the 3D look implemented with basic OpenGL. (My original idea was to do it like Nebulous.)
Anyway, I managed to cobble together one big level in the 48 hours, and it can be won. Below's a video (5 minutes of me struggling quite a bit, but I made it during compo time and was really tired..).