|“||Sponges! Watch for shrinkage...||”|
— Agent 1
Sponge Blocks begin as tiny yellow cubes suspended in the air. They rapidly expand when hit by Agent 3's Ink, but shrink when hit by Octarian Ink, making a unique rubbery sound in either case. They have small lights on the corners, which light up in the player's color ink when expanding and purple when being shrunk by Octarians. They become completely covered with Agent 3's Ink no matter how or where they are shot, making it quite easy to swim on them in squid form. In early missions, Sponge Blocks are located over safe surfaces and have few distractions, but later on they are usually over bottomless pits and are surrounded by enemies, requiring careful travel.
- One Burst Bomb immediately inflates a Sponge Block to its maximum size. This can be a useful option in a pinch because of its speed.
Sponge blocks are also part of the fifth area in Octo Valley.
Un-Inked Sponge Blocks.
Names in other languages