Thanks a lot thadian I'm glad you're enjoying it. I agree, would be great to have Alien AI players be more expansionist and basically behave like the colonial civs (build cities/infrastructure, trade with Earth, etc). Unfortunately totally eliminating their isNative flag in XML would disrupt too many other functioning things in the game. Does anyone know if it might be possible to tweak some flag in python or DLL to make them use some of the default AI scripts for colonial civs? Not knowing much about the DLLs I'm still not totally sure what's causing the alien tech problems. I have a hunch some of it could relate to Alien civs not having access to some of the unittypes enabled by techs. My current computer doesn't have Civ4Col, but I hope eventually we'll be able to iron that out and put out an updated version. As always anyone is more than welcome to join in on the mod, whether with coding knowledge, Pedia writing, or anything else. I'd also be interested to hear any general playtest / feedback suggestions or proposals re techtree, unit or building redesign.