Introducing
DM-LP-Gravometric, an Unreal Tournament 2004 map which says "hey, we had so-called 'portals' back in UnrealEngine 2!"
Making the metacube, which you can find via the short passage from the AVRiL pickup, or directly below (or is it above?) it on the "other" floor, did cause a certain amount of brain hurt. Because
WarpZones require overlap, the metacube is made out of Y-shaped pieces, and working out how to make those interact was
fun.
(Bonus points if you can spot the mistake in that version of the paper notes. I needed to make
polystyrene cubes to discover it, which allowed me to focus on any one sub-cube, take its adjacent cubes, and rotate them such that their base ['X'] was actually down.)
Also, I've updated
FreeChain to version 0.2. You can now actually set up players properly. So go find some friends and play it!