MercurySteam unveiled tons of new details about its upcoming 4v1 third-person shooter Raiders of the Broken Planet today, just prior to Gamescom, including the release date for the game's Prologue and first episode, and the game's pricing strategy. In addition, a cinematic trailer and some new screenshots have also been released.

On September 22, Raiders of the Broken Planet - Prologue will release for free. It will include two missions set across four stages that set up the rest of the game. This free version also comes with multiple characters, and full access to the game's multiplayer modes.

Raiders of the Broken Planet's first campaign, Alien Myths, will release that same day for only $9.99. According to the developers, Alien Myths contains tons of additional content such new characters, new missions, and its own stand-alone story that help to build the world of Raiders of the Broken Planet. 

In these Raiders of the Broken Planet campaigns, players can pick their favored protagonist and work together with three buddies to complete missions. Along the way though, another player, who is The Antagonist, can invade these matches and fight the four-player human team alongside the bad guys.

While only the Prologue and Alien Myths will be available on September 22, there will be three more campaigns that are released this year at "regular intervals". The titles of these three are Wardog Fury, Hades Betrayal, and Council’s Apocalypse. These campaigns tell parallel stories that have their own new characters, so players can jump into these at any time and not be lost in a long, convoluted plot, as the campaigns can be played in any order.

Enric Alvarez, Studio Head at MercurySteam, had the following to say about involving the community in the development of future campaigns:

"We want to be a developer in constant dialogue with our audience and ethical in our dealings at all times. Games are expensive and sometimes disappoint after all the media hype. We think allowing players to jump in for free is fair and if they like what they see, paying a reasonable price for more content is a better way to win them over.”

Raiders of the Broken Planet will be playable to the public at Gamescom on Xbox One X in 4K. Gamescom is taking place in Cologne, Germany from August 22-26. You can check out the cinematic Gamescom trailer and new screenshots below. Raiders of the Broken Planet - Prologue and Alien Myths will be available on PC, PS4, and Xbox One September 22.