Strategy:Primary Only

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Primary Only is an introduction to game modes that restrict tower use. As such, strategies become more limited, but the mode is still very easy and only presents a challenge on a small handful of maps.

General recommendations

Preparation

• Because towers such as Acidic Mixture Dip or Radar Scanner that can improve towers' coverage and let them pop more Bloon types are banned, know which towers are suitable for popping Camos and Leads.
  • The only accessible upgrades that can pop Camo Bloons are Enhanced Eyesight and Cold Snap.
  • Leads can be popped by Bomb Shooters or upgrades like Red Hot Rangs and Hot Shots.
  • You can use heroes in this game mode, so pick one that helps your coverage. Quincy gains camo and lead popping early on, while Sauda has innate camo detection and can pop lead with her level 3 ability.
• Primary Only is most difficult on maps that are very heavy on water. In this case, use heroes that can work around it.
  • On Peninsula, choose Etienne because of his large range and his projectiles not being affected by blockades.
  • On Flooded Valley, Adora is necessary because she is one of the few heroes to be able to reach over the wall. Adora's homing attacks and range make her effective, and her level 3 ability can help on tougher rounds. Brickell and Pat Fusty, while they can be placed in water, are discouraged because their level 3 abilities are dependent on buffing nearby towers when you will not be able to place any near them.
• If you are not planning to do Freeplay, do not spend too much money on anti-MOAB towers, because the only blimp that appears is on Round 40. A simple MOAB Assassin or MOAB Press should be enough for it.

Towers suited for most maps

Name	Portrait	Reasoning & How to Use
Quincy		Quincy is a hero geared for beginners, so he naturally is able to defend against the earlier rounds. Rapid Shot can help against the Round 40 MOAB.
Dart Monkey		Dart Monkeys are a versatile defense, being cheap, performing well in the early-game, and having upgrades that let them pop lead and camo. Use Spike-o-pult or Crossbow if the map has long, straight paths, or Triple Darts if it does not.

Towers to avoid

Name	Portrait	Reasoning & How to Use
Admiral Brickell Striker Jones Rosalia		These heroes have abilities that buff other towers that cannot be used on Primary Only. While it's still easy to beat the game with them, you may want to consider a different one.
Pat Fusty		While he can be placed in water for coverage, Pat Fusty is discouraged for his low range and the lack of accessible buffing towers.
Psi		Psi has a slow early game and picks up power with his MOAB popping later on. In this mode, late-game preparation is not needed.
Ice Monkey		Due to the already slow speed Bloons move on Easy, spending money on Ice Monkeys to slow them down more is a poor choice when you can buy more offensive towers instead.
Glue Gunner		The Glue Gunner tends to be used to slow MOABs or large swarms for cheap in the lategame. On Primary Only, Bloons move slowly and there is little need for slowing or defensive towers.