Bloons Tower Defense 6 is the latest game in the popular tower defense series involving evil balloons and brave monkeys.The goal of the game is to prevent balloons from reaching the end of a twisty track, surviving a number of waves of attackers. To do that, you place monkeys along the track. You start the game with a humble dart-throwing monkey, but gaining experience will unlock more powerful soldiers armed with boomerangs, sniper rifles, glue guns, and even lightsabers. Some will even sail ships, or pilot airplanes. Each balloon you choose gains you experience in two ways. First, you gain experience as a player and that unlocks better towers and advanced maps. Second, different monkeys you use gain experience individually, unlocking their advanced abilities.It is important to use a mixed force of defenders to counter different balloons - some are resistant to certain towers, some regenerate, and others are even invisible. Bloons Tower Defense 6 can be played on different difficulty levels, from easy to hard. Completing maps earns you money (more money for more difficult levels) used for buying premium upgrades, powerups such as “double range” or “double cash” that help you beat the more difficult levels. You can also purchase special agents, powerful defenders that supplement the abilities of your regular army.To make an excellent game even better, you can play it in different modes. Co-op play lets you join forces and pop the nefarious balloons with a friend. You can also test your defensive skills on daily challenges or special missions. Bloons Tower Defense 6 is a deep strategy game with excellent graphics and sound. You can pick it up quickly, but you will get the most out of it as you get more experienced and your units get better.