The world suffers from oil crisis and you have to defend the last desert oil-base from the incoming enemies and armored vehicles. Earn experience points to get new weapons and don't forget to use power supplies dropped by allied aircraft.
Use the tower's new and unbelievably cool Super Activated Abilities to lay waste to the endless swarms of balloons. You'll need all the firepower you can get to combat the new Balloon types and new tracks with moving parts and tunnels.
Command up to 3 defenders where there will be tons of enemy waves that will try to destroy your base. Equip a variety of weapons in which you can unlock and upgrade as you advance in the game.
