The MicroChip Pack is a Premium Item that costs 40 NK Coins. Every game, you get 5 of these (they will disappear when you lose, but you get 5 again when you start another game). The MicroChips can be implemented on towers ONLY. It makes said tower's projectiles able to home in on bloons. However, it can not be implemented on monkey towers, and, if you do, said tower will start attacking YOUR towers. But don't worry, they will die 5 seconds later. There is a list of damage below: