What do you mean by "outside of the world"? The red stuff or actually flying off the map?
Thanks for the comment!
Sorry: I checked again. Actually, it's kind of lava! I think I didn't saw it when I played because the color are not that different from the other side. But my command is still valid: Doing a miss fire at the beginning of your game will put you in a very bad position, while you just started the game for the first time. Could be great later in the game.