Tower Defense is a great online strategy game. Embark on a new battle and use available resources to prevent the foes from moving to the end of the track. It is also an important part that can lead the enemy to the town. With the money that you are given, you are able to buy and build up turrets. They will cause the death of invaders. Each wave that you defeat will offer more coins. However, you need to unlock every upgrade as soon as possible. Good luck!