The definition of a pay to win is: players who have money to spend can get more advanced ships and upgrades faster than a person who doesn't pay. Thus, this game is a pay to win. Also, there are energy points used each time you play a level. This limits the number of times you can play in a day without paying real money to continue playing. These two items together are unacceptable. I reloaded the game and reevaluated the game. While it is fun it still has these two problems. Deleted!