Although it's a very hard game to get your head around initially, I highly recommend it. The timing mechanism was confusing until I watched some videos, and the single player campaign was impossible until I searched for information on how the different unit types interact during combat. Peeking around corners does not provide any cover, but unit cover (low objects), range and state (movement), are the three keys you'll need to understand to smash this game wide open.

It is a highly addictive time waster that is both fun and challenging!