Strategy:CHIMPS

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CHIMPS is arguably the most difficult game-mode in BTD6, especially if Powers are used in other game modes.

General recommendations

Preparation

• If attempting to defeat CHIMPS either for the first time or on a map with unprecedented difficulty, a good idea is look up guides to beat it and take notes about the strategies in those guides. Later on, for maps of similar difficulty and layout, attempt to incorporate elements of the guides into the run without directly copying them to improve skills and prospects for future runs.
• While attempting to incorporate new strategies into harder maps or the first CHIMPS run without guides, doing some practice runs where retrying last round can be used freely is good practice that can build on the player's ability to defeat CHIMPS on their own. For maps where all parts of the game are difficult, get through the whole CHIMPS game with a red badge before going for a Black Border.
• Experiment different strategies in Sandbox (BTD6) or Challenge Editor to speed up the testing process if only a few rounds are being the roadblock.
• Remember the rounds that frequently become a roadblock, and plan ahead for those rounds later on. Rounds that are frequently challenging to CHIMPS runs are listed below.

Rounds to watch out for

Round #	Bloons Spawned	Reasoning
24	Camo Green x1 Blue Bloon x20	The Camo Green is relatively easy to deal with, but not having a Camo tower and having no money to buy one could cost the entire game.
28	Lead Bloon x6	Without reliable Lead popping and enough money, this round could become a dead-end.
33	Camo Red x20 Camo Yellow x1	There are many more camos than 24, requiring much more proper defense against them. Make sure to buy it before-hand or save enough money for one.
40	MOAB x1	The MOAB is the hardest challenge of the early game. Without the entire early-game setup being prepared to deal good single-target damage and clean up the tight, high-RBE ceramics, this round could very easily be a dead-end.
54	Ceramic Bloon x35 MOAB x2	The constant, fairly packed ceramics with the two MOABs make it arguably the toughest round in the early part of mid game.
63	Lead Bloon x75 Ceramic Bloon x122	This infamous round has 3 extremely tight Ceramic waves with 40, 40, and 42 Ceramics respectively. Unless the defense has been set up very adequately to deal with very dense Bloons, this round can pose massive troubles.

Strategies for harder maps

Many Advanced and Expert maps have layouts or gimmicks that prevent many aforementioned strategies from working. For more information on the strategies of those maps, see the Strategy section for them.