5th Edit- I've been updating my reviews for years. Here's my opinion on the latest update. Invasion has done very little to balance the game. Even after many complaints, and months of telling CS about imbalance in strength. They keep adding new things to upgrade which has made the game so complicated. Officers , medals, wingmen, research, decorations, tech medals, ghosts , and now battle angel (all these things are big money pits) A regular player cannot compete unless you farm or SPEND MONEY