Tier 2 upgrade

Echosense Network

Echosense Network in BTD6: +7.5% range to all Echosense Mermonkeys, stacking 10 times. When multiple Mermonkeys make it worth it.

Increases range for all Echosense Mermonkeys. Stacks up to 10 times.

In-game description

Stats

Main attack

Damage: 2
Pierce: 3
Attack speed: 1.2s
Range: 28

Can't pop Lead
Hits camo

How to use Echosense Network

Echosense Network gives every Mermonkey with this upgrade (or a higher tier on the same path) +7.5% range, including itself. Each Mermonkey with it adds another stack, up to 10, for a maximum of +75% range.

When to buy it

With one Mermonkey it barely does anything. It becomes strong when your strategy already uses several Mermonkeys, for example a Final Harmonic plus a few Riptide or Popseidon Mermonkeys with 0-x-2 crosspaths. The range matters most on maps where the short base range struggles, such as Tricky Tracks and Quad.

The Final Harmonic benefits most, since bigger range lets its trance and totem cover far more of the track. Do not buy extra Mermonkeys just to stack this upgrade.

Every Mermonkey that should receive the bonus needs the upgrade itself; Mermonkeys without it do not get the range.