BTD6 guide

BTD6 Half Cash Guide

Half Cash feels harsh because every inefficient purchase stays expensive for the whole run. The clean plan is to spend only on the next required job, keep upgrades that still matter later, and reach Round 80 without trying to build a normal-mode defense on half the money.

Open counter checker Browse towers

Sniper MonkeyGlobal patching

Ninja MonkeyEarly camo

AlchemistBuff value

ZOMGRound 80 finish

Quick answer

To beat BTD6 Half Cash, stop building like a normal Hard run. Start with the cheapest tower or hero placement that survives the first lanes, add camo before Round 24, lead before Round 28, focused MOAB damage before Round 40, ceramic cleanup before Round 63, and a real Round 80 ZOMG answer before the finish.

The best Half Cash towers are not always the flashiest Tier 5 towers. They are upgrades that solve several jobs for little money: early camo, long-range cleanup, grouped-bloon control, efficient buffs, and one dependable late midgame carry.

Use low-cost starters that keep contributing instead of throwaway towers.
Prefer upgrades that cover more than one problem, such as camo plus range or damage plus cleanup.
Do not over-farm unless the current defense is already ahead of the next checkpoint.
Use powers or Insta-Monkeys only if you are comfortable spending consumables; the guide below focuses on normal planning first.
Remember that Half Cash is a Hard-mode branch, so the practical target is the Round 80 ZOMG, not DDTs or the Round 100 BAD.

Why Half Cash is hard

Half Cash reduces the money you can spend, but tower prices do not become cheaper. That means every early mistake delays the next answer. A tower bought only for one small leak can make the Round 40 MOAB or Round 63 ceramics much harder because the run has fewer spare rounds to recover.

The mode also exposes habits that normal economy hides. Greedy Farms, scattered low-tier towers, late camo support, and expensive upgrades with poor map coverage all feel worse when the income side is compressed.

A bad placement is effectively more expensive because replacing it takes longer.
Saving too long is riskier because the next required upgrade arrives with less cash banked.
One strong support tower can be better than several unsupported damage towers.
A simple Round 80 plan is usually stronger than saving for an expensive freeplay-style tower.

Plan by spending windows

Use Half Cash as a sequence of budget checks. Early rounds need a starter that handles dense basic bloons without eating the whole plan. The first property checks need camo and lead answers. The middle game needs one damage core with support. The final stretch needs enough blimp damage and cleanup to beat Round 80.

If a run fails, do not rebuild everything at once. Name the missing job, then move one purchase earlier or choose a cheaper version of the same job.

Rounds 3-23: survive cheaply and place the hero early if the map allows it.
Rounds 24-39: cover camo, lead, and the first MOAB without buying luxury upgrades.
Rounds 40-62: turn the best early tower into a supported midgame core.
Rounds 63-78: make sure ceramics are controlled, not just blimps.
Rounds 79-80: stop greeding and buy the ZOMG answer before Round 80 starts.

Good Half Cash tower jobs

Choose towers by jobs, not by a full tier list. Ninja Monkey is useful when early camo coverage matters. Sniper Monkey can patch long maps and awkward lanes. Bomb Shooter, Boomerang Monkey, Tack Shooter, Wizard Monkey, Monkey Sub, and Monkey Buccaneer can all be strong when the map shape supports their efficient upgrades. Alchemist and Monkey Village are worth considering only when they support enough real damage to justify their cost.

The mistake is buying a support shell around nothing. A Village is powerful when several good towers benefit from it. An Alchemist is efficient when it buffs a fast or high-value target. On Half Cash, unsupported support is just delayed defense.

Early camo: Ninja Monkey, camo crosspaths, or a well-timed Village when multiple towers need detection.
Lead: Bomb Shooter, Wizard, Sniper upgrades, Alchemist-supported damage, or water towers that already fit the map.
MOAB-class damage: use one focused answer before Round 40 and improve it before Round 80.
Ceramic cleanup: keep pierce, slow, knockback, or high-rate cleanup near strong track coverage.
Buffs: buy Alchemist or Village support only when the buffed tower is already a major part of the plan.

Hero choice in Half Cash

A Half Cash hero should either stabilize the early game or replace multiple small purchases later. Sauda can be efficient on bend-heavy maps. Quincy is cheap and readable. Etienne can reduce camo-support pressure once his global camo support comes online. Benjamin is much more reasonable here than in CHIMPS because income is allowed, but he still needs the defense to survive while he pays back.

Do not force a hero because it is strong somewhere else. A short-range hero on a poor map, a water hero without useful water, or a high-micro hero that distracts you from leaks can cost more than it saves.

Pick Sauda when the map gives her repeated close-range track contact.
Pick Quincy when you need a cheap early hero with simple ability timing.
Pick Etienne when camo coverage would otherwise require awkward upgrades or Village placement.
Pick Benjamin when you are intentionally using economy and can survive the early rounds without his damage.
Avoid heroes that make you spend extra just to compensate for bad placement.

Should you farm in Half Cash?

Farming is not automatically wrong, but it is easy to overrate. Because cash is scarce, the Farm purchase itself competes directly with the next camo, lead, MOAB, or ceramic answer. If the defense is not already stable, a Farm can make the run harder before it has time to help.

Use Farms only when the next danger is already solved and the map gives you enough time to recover the investment. For many medal clears, especially while learning, skipping Farms and buying efficient defense is cleaner.

Farm after solving the next checkpoint, not before it.
Do not farm because normal Hard mode farming works; Half Cash changes the timing.
If a Farm delays Round 40 damage or Round 63 cleanup, it was bought too early.
Use the Banana Farm guide for broader economy planning outside strict Half Cash attempts.

Powers and Insta-Monkeys

Half Cash allows tools that CHIMPS removes, so powers and Insta-Monkeys are a legitimate in-game option if you want a medal without replaying the same map repeatedly. The tradeoff is that consumables can hide the weak point in the strategy. If your goal is to improve, use them deliberately rather than as a random panic button.

A clean way to use help is to spend it on the exact bottleneck: one early Cash Drop to stabilize a bad starting map, one Insta-Monkey to replace a weak opening, or one power to cover a round you have already identified. Avoid stacking help so heavily that you no longer learn which defense failed.

Use consumables intentionally if the medal matters more than solving the route from scratch.
For skill practice, test the plan without consumables first.
Do not let Double Cash, powers, or Insta-Monkeys become the assumed answer in a guideable strategy.
If the same round keeps needing help, improve that round's tower job instead.

Common Half Cash mistakes

Most Half Cash losses come from buying too many partial answers. A tower that almost handles camo, another that almost handles lead, and another that almost handles MOABs can cost more than one focused plan with the right support.

Review each loss by the first round that actually failed. Earlier rounds may look messy, but the failing round tells you which job must be cheaper, earlier, or better placed.

Buying a large upgrade that does not attack the map shape well.
Waiting until Round 39 to think about Round 40 MOAB damage.
Letting Round 63 ceramics expose a build that only pops blimp layers.
Putting camo detection on side towers while the main damage still cannot see camo.
Greeding economy when the next Hard-mode checkpoint is not solved.

Sources checked

Reference notes

Primary and reference pages reviewed for factual checks while writing this guide.

FAQ

Common follow-up questions

What is the best strategy for Half Cash in BTD6?

The safest general strategy is a cheap starter, early hero if the map supports it, one efficient damage core, and only the support needed for camo, lead, MOABs, ceramics, and Round 80. Avoid scattered towers and late luxury upgrades.

Is Benjamin good in Half Cash?

Benjamin can be good in Half Cash because income is allowed, unlike CHIMPS. He is still not a free win: the defense must survive the early rounds while his value builds.

Do I need to prepare for DDTs in Half Cash?

For a normal Half Cash medal, no. Half Cash is a Hard-mode branch and the main target is Round 80, so DDT rounds are outside the standard clear unless you continue into freeplay.

Should I use powers for Half Cash?

It is fine to use powers or Insta-Monkeys if you only want the medal. If you want to improve, first identify the weak round and use consumables sparingly so they do not hide the real problem.