If you had any questions about Ubisoft's upcoming open world adventure Far Cry Primal this excellent video will teach you many things about weapons, beasts, other tribes and how to survive.
It sounds like there's a lot to take in, especially when it comes to helping to rebuild your tribe. You'll have to find materials and even new members to increase your skills in certain important areas. And it wouldn't be a Far Cry game without an element of random drug taking so you can trip out and go on a really weird spiritual journey. The idea of having a day to night cycle that really matters, because you're much more vulnerable to animal attacks, sounds exciting.
Oh and you can ride mammoths, naturally.
Coming to consoles and PC from the 23rd of February 2016.