Echo

How to use it

• It is expensive and slow. Buy it when the rock is tough enough to stop your other balls.
• Its own upgrade, Heavier fall, makes it stronger every level and widens its reach at levels 3 and 6.
• Send it where the rock is densest and let the cheap balls do the rest.

Upgrades every ball shares

Every ball has four upgrades: Cell damage (harder hits), Refinement (more pixels per cell), Momentum (moves faster) and one of its own. The field also has Nightwork, which sets what the fleet earns while the game is closed.

Cell damage

Hits tougher rock and removes more cell health per impact. A one-cell ball still targets one cell.

Refinement

Every cell this ball breaks is worth more.

Momentum

This ball moves faster, so it touches more rock in the same minute.

Nightwork

How much the fleet earns while the game is closed.