Hmm, I wonder how you are supposed to convert screen into level, or calculating where everything is supposed to stay at that camrazoom and that cameraX/Y. I do not directly talk about Eufloria, but any overhead games(games where you look down at the world)...
It's very hard to explain, so let's imagine Minecraft, with topview. How do you know where every single block is placed on the screen? It's an easy deal with the level, but converting that into the screen it might get harder...