The strength of Lost Empire: Immortals lies in the developer's understanding of its audience. Pollux have ensured that there is enough size and depth in Immortals to ensnare the PC 4X fan. It's the kind of game that requires hour upon hour of input in order to get the most out of it. As the game progresses, it becomes more tense, complex and demanding and a large scale space civilisation is a sight to behold (never mind micromanage). While the multiplayer goes some way to atoning for the AI (and adding to the already impressive longevity), Immortals still lacks something. It feels a little dated in some places, utterly absorbing in others and frustrating in the rest. For a game so concerned with balance, its annoyances are in danger of outweighing its virtues.