Some flavour.
In Short: A stunning technical achievement and a mesmerisingly addictive one, even after you realise how simplistic and repetitive it really is.
Pros: Enormous game world is a pleasure to explore even when you know all its tricks. Competent space and land combat. Excellent art design and soundtrack.
Cons: Highly repetitive main gameplay loop, that requires little skill and offers little danger. Poor use of intelligent aliens. Flawed visuals when on a planet. Infuriating inventory and lots of minor bugs.