This sub-chapter (ITカタコンベ, IT Catacomb) was added in update 6.3 on July 26th, 2017.
This chapter introduces 1 new enemy: ケロ助
- Croakley: A frog enemy with long distance ability (900: 1100~1400) and an ability to perma-slow any Cats, since its Slow effect last for a minute. However, it deals very little damage per hit.
List of Levels
- Caliban's Keeper: Henry is the boss, triggered by attacking the base. The player will face 3 R. Osts during the stage.
- Dial-Up Dreams: Cala Maria is spawned occasionally with Angelic Gory, similar to a few stages from nearby SoL chapters. Zombies will appear if the player takes too long.
- Throne of Phone: 3 Brollows with very high magnification (about 4000%) are spawned here.
- 0S Graveyard: The stage starts with Professor A., supported by Bun Bun Black. After Bun Bun Black is defeated, Teacher Bun Bun appears as the last threat.
- The Holy Exploit: Gabriels and Doge Darks spawn at the beginning. When the base is hit, Boraphim and Razorback appear at the same time.
- Broadband Omens: The stage start with The Face, followed by Croakley a short while later. Occasionally, a single Wall Doge will appear. If the player takes too long, Berserkory can be seen.