Apex Edition:
https://www.microsoft.com/en-gb/store/p/far-cry-primal-apex-edition/bzgbdssp6g2j (thanks Vipes)

The award-winning Far Cry franchise that stormed the tropics and the Himalayas now enters the original fight for humanity’s survival with its innovative open-world sandbox gameplay, bringing together massive beasts, breathtaking environments, and unpredictable savage encounters.
Welcome to the Stone Age, a time of extreme danger and limitless adventure, when giant mammoths and sabretooth tigers ruled the Earth and humanity is at the bottom of the food chain. As the last survivor of your hunting group, you will learn to craft a deadly arsenal, fend off fierce predators, and outsmart enemy tribes to conquer the land of Oros and become the Apex Predator.
GAME FEATURES
• STONE AGE BY FAR CRY: The rich setting of the Stone Age provides a new setting filled with unpredictable mayhem, dangerous threats, and incredible stories that Far Cry is known for.

• RISE ABOVE EXTINCTION: Play as Takkar, a seasoned hunter and the last surviving member of your group. There is one goal: survive in a world where you are the prey.

• FIERCE WILDLIFE AND SAVAGE AND MAJESTIC WORLD: This is earth before man laid claim to it, where deadly sabretooth tigers ruled the world, giant woolly mammoths were kings, and herds of massive Elk stormed through the plains. Discover these and many more daunting creatures in the savage open-world of Oros within the towering redwood forests, harsh taiga, cold glacial mountains and humid swamps.

• NEW !! SURVIVOR MODE & PERMADEATH: Rise to the ultimate challenge in Survivor Mode for a more realistic experience with fewer resources and a stamina gauge. If you still feel the stakes aren’t high enough then turn on full Permadeath, giving you just one chance to survive. You die and it's game over.