Lost Empire is a 4X turn-based strategy video game developed by Pollux Gamelabs and released in June 2007.

The story is that an attack led by an unknown evil alien race has almost destroyed the seven civilizations, and they are therefore now trying to expand furthest in order to ensure their continued survival.

The game is mod-able with the possibility to tweak and change science descriptions, their effects, races, artwork, all text, and more.

A follow-up on this title called Lost Empire: Immortals, a revamped version of the game, was released March 11, 2008.

Reviewers praised the graphics and the scale of the game, but criticized the awkward interface, computer AI, and balance problems with very large galaxies.