Spoiler warning!
This article contains plot details about later parts of the game.

Players can collect various hidden objects in the game: the Grand Diagonal, the Grand Spectral, the Grand Finale, the Grand Brachial, and the Grand Chocolatier. These objects can be traded to Zacharie in zone 0 for the Aries-card. In doing so, players can unlock a special ending after the credits, in which causing a stereotypical-looking UFO to descend from the top of the screen, eventually depositing several monkeys who, presumably, are from space. They comment on The Batter's work purifying the land (refering to the the name the player had entered) before celebrating their victory while the screen once again fades to black.

This is, according to the game, the true, canon ending which takes place in another dimension.