I've been toying around with the amoeba breeding trick described in this thread. I have discovered that if you use this trick near the blue door (don't open the blue door) near the entrance to the volcano from the factory, you can in fact propel yourself off the map.
To do this, go to the location I described. There will be two amoebas on the side of the door that you are on, kill them. There will also be two amoebas on the side of the blue door that you are not on, allow them to become one large amoeba. Continue on as usual for this glitch.
As soon as the game starts glitching (extreme framerate drop) back up and turn slightly to one side. (the turn is so you don't get killed by the massive amounts of amoebas and their fire that will pour through the still shut blue door) If you get really lucky you will pass through the wall on the opposite side of the map alive.
Here are some pictures I took while journeying beyond the confines of the volcano.
This post has been edited by Ross : 11 December 2006 - 10:02 PM