"Bloons Tower Defense 5" is a free-to-play online strategy game developed by the company Ninja Kiwi. It allows players to choose from different towers, each of which has its own unique attack, in an attempt to destroy a series of balloons as they move along a track.
The game is part of the tower defense subgenre of strategy games, wherein the game focuses on the placement of different turrets, known as towers, with a set attack radius and accompanying special abilities, over different courses. On each course, the player's goal is to destroy oncoming waves of enemies before they reach the end of the track. These games include different types of enemies with varying amounts of health, represented in this game as balloons of different colors.
"Bloons Tower Defense 5" features several variations on the standard genre that distinguish it from other games as well as previous entries in the series. For example, players are able to create an account with the developer in order to save progress and upgrades to their different towers. The game also features different items that the player is able to purchase with real-world money via an in-game currency system. These items include new tracks, special towers and different single-use bonuses.