Fast Engineering (Battles)

For other uses, see Faster Engineering (disambiguation).

Fast Engineering

Multiplatform

Increases build speed produces sentry guns more often.

Tower	Monkey Engineer — Path 1 — Tier 2
Cost	$350

← Sentry Gun

Cleansing Foam →

Fast Engineering is the Monkey Engineer's path 1 tier 2 upgrade in the mobile version of Bloons TD Battles. It increases the rate that the Monkey Engineer deploys Sentries at from every 10 seconds to every 5 seconds.

Costs and sell values

Tiers	Cost	Sell value
2-0	$1,300	$1,040
2-1	$1,750	$1,400
2-2	$1,950	$1,560
2-3	$2,500	$2,000
2-4	$7,700	$6,160

Update history

For a complete list of Monkey Engineer changes, see Update history:Monkey Engineer (Battles).

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Version 4.6

2-2

•  Sentry spawner: deployment range reduced ― 195 units → 162.5 units

Version 4.9

•  Overall cost reduced by $50 (due to cost changes for previous tiers)

Version 6.9

•  Sentries can now overlap other towers

2-3, 2-4

•  Sentry: attack cooldown reduced ― 0.59s → 0.53s

Version 6.11

•  Upgrade cost reduced ― $400 → $350
  •  Overall cost is unchanged (due to cost changes for previous tiers)
•  Sentry spawner: cooldown reduced ― 6s → 5s