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Egg Sac
Common 基本ボール

Egg Sac

Explodes into {[min_babies]}-{[max_babies]} baby balls on hitting an enemy. Has a {[cooldown_length]} second cooldown before it can be shot again.

Egg Sac Ball Guide

Quick Reference

Attribute Value
Effect Bursts on impact, releasing multiple small projectiles in all directions
Spread Pattern Radial scatter from impact point
Category Spawner / Burst AoE
Solo Tier B
Evolution Tier A

Rating

Egg Sac is a burst-type spawner ball. On impact, it "hatches" — exploding outward with a radial scatter of small projectiles that fly in all directions from the landing point. Unlike Brood Mother, which releases spiders that crawl/run from the impact, Egg Sac fires in a circular burst pattern that covers a wide radius instantly.

Against enemies grouped at the landing point, the radial spread can hit everything in a full circle simultaneously. This makes it one of the best balls in the game against dense formations when aimed correctly. Solo B-tier is a conservative rating; with proper targeting and spawn passives, it regularly performs at A-tier level.

When to Pick

Pick Egg Sac when facing waves with clustered enemy formations. A well-placed Egg Sac burst at the center of a cluster is one of the highest DPS hits available to a spawner build.

Lower value against scattered enemies where the radial spread has nowhere to concentrate. In those cases, a single-target ball is more efficient per throw.

Evolutions

Egg Sac evolves into more powerful burst-spawner forms. Evolved versions typically increase the number of child projectiles, improve their damage, or add status effects to the scattered balls. Evolution materials include other spawner-type balls and potentially Brood Mother. Pursue evolution as soon as available — the upgrade is substantial.

Best Characters

  • AoE-focused builds: Characters that maximize area output use Egg Sac's radial burst to full effect.
  • Spawn synergy characters: Combine with Brood Mother for double-spawner coverage on every throw.
  • Dense wave specialists: Characters running content with consistently packed enemy formations extract maximum value.

Recommended Passives

Passive Effect Why It Works
Spawn Count Up More child projectiles released Directly increases the burst's coverage
Burst Range Up Larger scatter radius Catches more enemies per hatch
Child Damage Up Higher individual projectile damage Multiplied across every scattered ball

Tips

  • Center targeting: Always aim for the center of enemy clusters. The radial scatter covers 360° — the center hit maximizes simultaneous contacts.
  • Avoid walls: Landing near walls causes a large fraction of the scatter to be absorbed. Aim for open-field clusters whenever possible.
  • Brood Mother combo: Running both Egg Sac and Brood Mother creates overlapping spawn coverage. Every throw generates two independent waves of secondary projectiles.
  • Bounce procs: Each bounce fires another burst. Bounce passives are particularly good with Egg Sac.

TL;DR

Egg Sac bursts on impact in a radial scatter of small projectiles. B-tier solo but very strong against clustered enemies with proper aim. Pairs excellently with Brood Mother. Evolves into stronger burst-spawner forms.