Swamp of Ignorance (知識に溺れる者の沼) is the fourth stage in Laboratory Island.
Battleground
- At the start of the battle, infinite B.B.Bunnies spawn, delay 6.7~13.3 seconds200~400f.
- Various enemies spawn after:
- 13.3 seconds400f, Two Can.
- 30 seconds, Tackey.
- 40 seconds, Berserkory.
- 53.3 seconds1600f, Two Can.
- 60 seconds, Hackey.
- 86.7 seconds2600f, Two Can.
- 90 seconds, Tackey.
- 100 seconds, Berserkory.
- 113.3 seconds3400f, Two Can.