|This article documents an April Fools' joke.
This feature won't be in the game, as it was released as a part of a joke update.
This special structure is used to expand the Raft. It can be built with a Building Hammer. Foundations can be destroyed with an Axe, or by the Shark. Placing Foundation Armor on a foundation block will prevent the Shark from attacking the Foundation.
The item was introduced on first of April 2021.
- Expanding the Raft.
- If the last remaining Foundation is destroyed, the game is essentially over, as the player cannot place any new Foundations.