Give Isaac Newton an underwhelming Christmas present in his unseasonably green garden.

Convince Joan of Arc to accept her own shield, which is clearly not a buckler.

Give Leonardo his notebook, and don't tell him that the backwards writing wasn't fooling anyone.

Give an orchestra a single copy of the score to Beethoven's 9th for everyone to share.

Make a gentlemen's agreement for Mario's face to be carved onto Mt. Rushmore.

SEND BAMBOO, CARBONIZED to Thomas Edison.

Canonically change Mario's name.

Return Plato's writings to him so that he doesn't have to directly interact with his students.

Change Mario's class to Knight.

Learn the secret to defeating koopas through passive resistance.

Save the printing press, enabling the future creation of the Mario's Time Machine instruction manual.

Help out Magellan, who isn't concerned that someone new has appeared on his ship in the middle of the ocean.

Help out Michelangelo, then realize that he will have completely forgotten about you within 2 years.

Just give the skull to Shakespeare, and don't think too hard about where it came from.

Do a favor for Cleopatra and her strangely hypnotic fanbearer.

Complete the game with the worst ending.

Complete the game with the normal ending.

Complete the game with the best ending.

Complete all side quests in Cambridge.

Complete all side quests in Orleans.

Complete all side quests in 1505 Florence.

Complete all side quests in Vienna.

Complete all side quests in Philadelphia.

Complete all side quests in Menlo Park.

Complete all side quests in the Gobi Desert.

Complete all side quests in Athens.

Complete all side quests in London.

Complete all side quests in Calcutta.

Complete all side quests in Mainz.

Complete all side quests in the Pacific Ocean.

Complete all side quests in 1503 Florence.

Complete all side quests in Stratford-upon-Avon.

Complete all side quests in Alexandria.

Fill in a History Page without making any mistakes.

Finally put Dr. Mario's college education to use by filling out a History Page before using the Timulator.

Collect 10 mushrooms and plunge into a whirlpool with a bonus timer of 11 or higher.

Have a parent or guardian read the note for them in the manual, then set the Timulator as indicated below.