Sacks are spider-web variants of normal Boils added to the Wrath of the Lamb DLC. They cannot replace Boils or Guts, but can commonly be found in the Cellar.
Behavior[]
Sacks don't shoot projectiles, instead, they periodically spawn Spiders when fully swollen. Therefore, damaging them will prevent them from spawning Spiders, making them easy to kill.
Champion Behavior[]
In Hard Mode, which was added to the Eternal Edition update, the Eternal Sacks spawn 2 spiders instead of one. They are among the easiest Eternal enemies to defeat, as they still will not attack if they are not at full size.
Notes[]
- They can be spawned by spider-type bosses, such as the Widow.
| Monsters | ||
|---|---|---|
| Fly variants |  Black Fly •  Attack Fly •  Moter • ( :  Eternal Fly)
| |
| Gaper variants |  Gaper •  Frowning Gaper •  Mr. Maw • (:  Gurgle)
| |
| Mulligan variants |  Mulligan •  Mulligoon •  Hive • (:  Mulliboom)
| |
| Horf variants |  Horf •  Maw •  Red Maw • (:  Psychic Maw)
| |
| Vis variants |  Vis • (:  Double Vis •  Chubber)
| |
| Maggot variants |  Maggot •  Charger •  Spitty
| |
| Hopper variants |  Hopper •  Flaming Hopper •  Leaper
| |
| Boil variants |  Boil • (:  Gut •  Sack)
| |
| Clot variants |  Clotty •  Clot •  I. Blob
| |
| Leech variants |  Leech •  Kamikaze Leech • (:  Holy Leech)
| |
| Spider variants | :  Spider •  Big Spider •  Trite
| |
| Pooter variants |  Pooter • (:  Fat Fly)
| |
| Boomfly variants |  Boom Fly •  Red Boom Fly
| |
| Pacer variants |  Pacer •  Gusher
| |
| Sucker variants |  Sucker • (:  Spit)
| |
| Globin variants |  Globin •  Gazing Globin
| |
| Knight variants |  Knight •  Selfless Knight
| |
| Eye variants |  Eye •  Bloodshot Eye
| |
| Host variants |  Host •  Red Host
| |
| Baby variants |  Baby • (:  Angelic Baby)
| |
| Eye variants | Eye • Bloodshot Eye
| |
| Poky variants |  Poky • (:  Slide)
| |
| Brain variants |  Brain •  Membrain
| |
| Gut variants |  Guts • (:  Mama Guts)
| |
| Dople variants |  Dople •  Evil Twin
| |
| Grimace variants |  Stone Grimace • (:  Vomit Grimace)
| |
| Keeper variants | :  Keeper •  Hanger
| |
| Standalone variants |  Para-Bite •  Fred •  Lump •  Embryo • Peep Eye • (:  Swarmer •  Mask + Heart •  B. Licker)
| |