Spectre is the Monkey Ace's path 1 tier 4 upgrade in Bloons Monkey City. It converts the attacks of the previous upgrade to fire a constant straight shot stream of darts and bombs towards the closest Bloon to the Spectre.
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Costs and sell values
Note: this list does not factor in Monkey Knowledge or other discounts.
Tiers
Mobile version
Flash version
Cost
Sell value
Cost
Sell value
4-0
$22,325
$17,860
$22,325
$17,860
4-1
$22,525
$18,020
$22,525
$18,020
4-2
$22,875
$18,300
$22,875
$18,300
Strategy
A solid tower for the late game and excels at grouped MOAB popping power, saving up to this can well reward you by clearing the rest of the Bloons on the tile being captured. While there can be better options for single target ZOMG damage, it's still a strong enough upgrade that it can be used almost anywhere.
One can also use the Monkey Fortbug to effectively double the damage of the explosives.
