Yeah, the automatic maps will work fine for testing your textures, and such. But, if you want to use this for anything outside of ZB... you will need to UV it properly... for the best results that is.
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"Your weapons are no match for ours! People of Mars, surrender!"
"Um, this isn't Mars. This is Earth."
"Earth? Earth-with-nuclear-weapons Earth?"
"Yes."
[long pause] "Friend!!"