Those large levels are important, as the game will ship with the ability to play with up to 16 players in co-op mode.

A four player multiplayer co-op mode is also available in game.

One of those new options is a co-op mode that lets up to four players work together through the campaign.

The co-op mode will be able to feature up to three players.

Looks interesting, but why not at least a co-op mode?

There are no party members, but a co-op mode is available.

On the small chance that this isn't insane enough for you, the game also allows up to 16 players in the co-op mode.

Originally they wanted more than two players in the co-op mode.

Syndicate will not use an online pass for the co-op modes.

Players are able to complete campaign missions in co-op mode.