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Roll Up The Cousins Level – Roll up all the Cousins hidden throughout the game, then talk to the boy in the meadow.

Save the Earth Mission – Beat the game, then talk to the astronaut.

Special Title Screen Message – Beat the game, then go to the title screen

The Rose Level – Completing every other stage in the game, including the cousin-roll-up stage unlocked by talking to the boy after finding all of the cousins.

View The Cosmos – Create some planets/stars, then walk into the background in the meadow.

View the Ending Credits – Beat the game, then talk to the schoolgirl in the meadow.