Very unfair and time consuming game. You are allowed to attack ships within your strength range. However, other players with ships that have 10 times your strength level can attack you even though you have your Peace Sheild in place. VERY UNFAIR and one sided unless you're a big time spender to get your ships above a 300,000 strength level. Note, ships are very slow to upgrade and requires way too much time and resources to do so. Beware to new users, the game is NOTHING like the trailers.