Raiders of the Broken Planet – Prologue is free of cost game which serves as a demo campaign for an online asymmetric multiplayer game Raiders of the Broken Planet, which was developed by MercurySteam and later rebranded as Spacelords.

###Setting
Set in the distant future on a mysterious Broken Planet, the game tells the story of its Raiders who set out to free the planet from the hands of the Antagonist.

###Gameplay
The game focuses on the four versus one asymmetric multiplayer horde mode. Play as one of the Raiders with three other players and stand against numerous hordes of enemies or switch sides and become the Antagonist, who will use all means to stop the heroes from completing their objective. The players are free to choose one of seventeen characters to play as. The game also features a so-called Character Card system which allows for the customization of the chosen character. The players can also mod their weapons however they see fit.

###Controversy
Raiders of the Broken Planet was renamed to Spacelords due to completely changing its pricing model and going free to play. All the campaigns of the game were made available to all the players.

Yet the gunplay got an overhaul. In order to get a new weapon, the players have to grind for a randomly spawning blueprints and then spend large amounts of in-game currency to build the weapon they got. This was met with severe backlash by the users.