a neat idea, but once i get to level 5, the map becomes invisible and you kinda just lose.
edit : actually, it fixed when i reloaded, but i think that means i spawned blindfolded. which feels REALLY bad
I've found a memory leak where shattered crystal graphics weren't being cleaned up between levels. I think that could eventually overwhelm a GPU until the browser drops the rendering context, which would cause the map to go blank until a page reload.
So I fixed the memory leak, and also added recovery handling to restore the rendering context if it does get dropped, so this shouldn't happen again. Thanks for the report!