I thought the player colors are all green(they dont need to be black, thats just a "the thing"trend, and mine is in the jungle) though, including the critters?
i can post one thats not locked if ya want. i ought to remove the extra civis on red really.
the thing has 3 forms

if the thing kills a critter he can become a critter.
i made it in july as i said, before the other ones("the thing runs exprt" and "The installation one") but as i was unable to distribute it at the time since my hosting ports were closed, i could get anyone to play it. what im trying to say is that i couldnt copy the ideas from the above 2 maps because they didnt exist then.
I just found a version from june 9th.