Unlockable - Comets | |
| Finish in under 20 minutes. | Make the Moon Comet |
| Finish in under 15 minutes. | Make a Star 9 Comet |
| Finish in under a 1 minute. | Make a Star 1 Comet |
| Finish in under 3 minutes. | Make a Star 2 Comet |
| Finish in under 4 minutes. | Make a Star 3 Comet |
| Finish in under 7 minutes. | Make a Star 4 Comet |
| Finish in under 8 minutes. | Make a Star 5 Comet |
| Finish in under 8 minutes. | Make a Star 6 Comet |
| Finish in under 8 minutes. | Make a Star 7 Comet |
| Finish in under 12 minutes. | Make a Star 8 Comet |
Unlockable - Moon Memorial | |
| Moon Memorial (movies, sounds, music, endings, etc.) | Complete the Make the Moon stage. |
Unlockable - Eternal Stages | |
| Eternal 1 | Build up the ball past 1m30cm before the time runs out in Make a Star 4. |
| Eternal 2 | Build up the ball past 25m before the time runs out in Make a Star 8. |
| Eternal 3 | Build up the ball past 800m before the time runs out in Make the Moon. |
Secret - Hidden movie | |
| After completing the moon, do the stage again and make the moon into stardust. This gives you a movie of the little boy saying how rich people are different. | |
Secret - More Balloons on Collection Menu | |
| When you collect at least one of every object in the game, thus completing the Collection, the King of All Cosmos will give his praise as well as more balloons to carry the Prince on the Collection Menu. | |
Secret - Hit Your Friend With A Washing Pan | |
| After beating your friend in Space Mushroom, press triangle while the King Of All Cosmos is talking, to drop washpans on their head. | |
Secret - See What the King is Saying | |
| When you start a stage, the King will say "sending things to earth......" when he does that, open the disc tray and do not close it (or close it without the disc) and you will hear more things the king is sending to earth. They are pretty funny. When you are finished, just close the tray/ put in the game disc. | |
Easter Egg - Royal Warp | |
| When you get pushed through the floor by a moving object such as the swing with bears on it on Make A Star 4, The King will warp you to another area of the level for your safety and give a short speech about the Royal Warp. | |
Easter Egg - Happy New Years Message | |
| Set your PS2's date to just before midnight on December 31. After midnight passes, you will receive a message from the King of All Cosmos. | |
