Here's another batch of Spore screenshots, this time the tribal stage is shown in Maxis' upcoming PC and Mac evolution simulation.

The Spore Team presents the Tribal Stage, the third evolutionary stage in the Spore universe. You begin the Tribal Stage as a small group of sentient creatures which have just discovered tools and have formed the first tribe on their planet. Gather food with your tribe members by picking fruit, hunting or domesticating wild animals and fishing. Your tribe runs on food buy tools with it, purchase tribal accessories with it, gift it to other tribes, steal it from other tribes, and (of course) feed your tribe with it. Use different tools to befriend or attack neighboring tribes, aid in hunting and gatherting, or heal your tribe members. Depending on how you played the Cell and Creature Stages, you will begin Tribal Stage with two of six super poswers at your disposal. Defeat of ally with five trives to conquer the continent and form civilization!