Pier

The Pier was a seventh level biome during early access as a provisional ending to successful runs.

Development
There were two versions of the Pier:

The first, named the Wharf, the player met an NPC called the Fisherman. He would kill the player, letting him start a new run from the Prisoners' Quarters.

The second one, named the Pier, the player found a board with "work in progress" written on it, and beyond it a tube which he would enter after leaving its body to go back to the Prisoners' Quarters. When standing in front of the board, the player could read:
 * ""WORK IN PROGRESS!" Good job! You made it to the (temporary) end of the game!"