All it takes is a keychain to leak a game these days. After Assassin's Creed Odyssey was leaked, Ubisoft acknowledged it with a little teaser that seemed to reference that famous "This is Sparta!" scene from the movie 300. It looks like that was less a jab at the game leak and more an indication of the game's specific setting. We had already gleaned from the Greek helmet on the keychain that the game would be set in ancient Greece, but the game links you directly back to Sparta itself, the home of King Leonidas.

This game is set even further back than last year's Assassin's Creed Origins. It's a sequel-not-a-sequel. The present day sequences will still feature Layla, but the game is actually set in 431 B.C., nearly four centuries before Origins. Bayek's great-great-great grandfather wasn't even born yet.

Because that game was about the origin of the assassins as a group, it seems like maybe this game will focus on the ancient race the games have shown us bits and pieces of – that's just a guess. To that effect, though, your character won't be wielding the classic hidden blade of Creeds past. Instead, you'll be wielding the broken spear of King Leonidas himself. Whether Leonidas himself ends up being a member of the "first civilization" in the game, the spear itself is a relic of that time, and you are a descendant of Leonidas himself. This marks the first time you'll have access to one of those artifacts for the entire game, and you'll upgrade and improve it throughout the course of the game according to previews like that from Game Informer.

You'll also get to choose your assassin this time around. Assassin's Creed Syndicate had you switching between the Frey siblings, and both were involved in the story. This time, you'll choose between two characters – Alexios and Kassandra – at the beginning of the game, and play as them. The other character, the one you don't choose, just doesn't exist.

The game looks, apparently feels, a lot like Origins, using similar combat and progression, as well as allowing you to traverse on foot, horseback, or via boat. The time you spend on the water, though, seems to be drawing a bit from Assassin's Creed IV: Black Flag. You'll be able to gather a crew and engage in combat on the open waters.

The game is also going full-RPG this time around. There's a dialogue system that the studio showed during the E3 presentation, and Kotaku says there are even branching quests, multiple endings, and romance options.

We're expecting to see the game later this week and we'll be back with our impressions once we do. You can mark your calendars, though, for the game to hit PC, PlayStation 4, and Xbox One on October 5th, 2018.