Portal Defenders: Tower Defense is a fascinating tower defense strategy game with a cool retro style. Your duty in this engaging free online game will be to protect the portal from the attacks of various waves of enemies in each level. For that you will have to buy and position different types of defense systems with different properties. You will start each level with some money, but then you will earn money as you kill enemies.
For each type of enemy you will have to think carefully about which weapon to use and which strategy will work best. For example, soldiers can change their position and have the characteristic of holding back enemies, so you can place another weapon nearby that doubles the attack. You can upgrade your weapons during each battle and buy upgrades that will work for all levels. Do you think you can finish every stage? Have fun playing Portal Defenders: Tower Defense, another fun free online game on Silvergames.com!