Amplitude Studios, the Paris-based independent development studio, has started their first ever 'Endless Day,' providing new content for their games Endless Space, Endless Legend and Dungeon of the Endless.

The event, planned as the first of many, provides a way to celebrate Amplitude Studios birthday and as a way to thank their loyal fans. Mysterious events have been added to all three of the studios' games that users can complete to unlock new permanent content. Additionally, owners of the Endless Space expansion Endless Space Disharmony will be receiving the Vaulters faction for free, a playable unit that was previously only available as a bonus to users that also purchased Dungeon of the Endless.

You can access the new mysterious content in the Endless series of games from now until noon on January 25th. Endless Space, Endless Legend and Dungeon of the Endless are all currently available for purchase on Steam for PC and Mac.