Coming hot off from the depths of 4Chan, there seem to be some major leaks for Horizon Zero Dawn that reveals new gameplay, spoils the ending & DLC plans put out by one of the persons taking part in the mock review for the game. It has not been confirmed yet, so take everything ahead with a pinch of salt. Also, be wary of spoilers.
The story twist is that this is the second cycle in this world. The main character, Aloy, discovers by visiting the Ancient Ruins of civilization at the end of the game that the ‘humans’ you see walking around, including you, are simply bio-machines from the first cycle that used biomatter to replicate, like humans reproduce. Humanity has been gone EVEN LONGER than we, the players, think at first. The corruption is never fully explained, it’s just established that it’s from an unknown source within the ruins, but there’s a hint it might have more importance in a sequel.
The ending has Aloy basically choose between wiping out the robots or the bio-machines, since the robots were initially programmed by the original humans to wipe out the living creatures the bio-machines that yearned to live like humans hundreds of thousands of years ago feed off.
Zero Dawn is the name of the software found in a huge building in the Ancient Ruins that can shut off the beings roaming the world or your own race.
Game takes 20 hours to complete, around 45 hours to 100%, difficulty level Zero Dawn unlocked upon completion, makes every robot creature corrupted, with a few different AI moves and loot
No story DLC planned, but an arena mode will come in Q2-Q3 2017
You can override pretty much any creature in the game. The flying creature will actually let you fly around the map, which is pretty cool. It’s one of the last things you learn in the game
The world is huge. It’s Witcher 3’s Velen huge, with no oceans as a cheat to increase size. Desert, Tropical forest, hills, ancient ruins, snow mountains are the ‘biomes’. Feels like a very traditional RPG, which is surprising to see coming from Guerrilla.