Standing on the Shoulders of Plumbers
Give Isaac Newton an underwhelming Christmas present in his unseasonably green garden.
The Dolphin Who Would Be King
Convince Joan of Arc to accept her own shield, which is clearly not a buckler.
Leonardo Leads
Give Leonardo his notebook, and don't tell him that the backwards writing wasn't fooling anyone.
He Didn't Seem Too Concerned
Give an orchestra a single copy of the score to Beethoven's 9th for everyone to share.
Which One is Thomas Jefferson?
Make a gentlemen's agreement for Mario's face to be carved onto Mt. Rushmore.
Subtle and Quick to Anger
SEND BAMBOO, CARBONIZED to Thomas Edison.
Marco!
Canonically change Mario's name.
At Least 900 Years
Return Plato's writings to him so that he doesn't have to directly interact with his students.
Little Man, Little Man!
Change Mario's class to Knight.
They Only Made One Flag?
Learn the secret to defeating koopas through passive resistance.
Johannes, I Didn't Know You Felt That Way
Save the printing press, enabling the future creation of the Mario's Time Machine instruction manual.
That Seagull Was Bigger than Yoshi
Help out Magellan, who isn't concerned that someone new has appeared on his ship in the middle of the ocean.
Michelangelo Is a Party Dude
Help out Michelangelo, then realize that he will have completely forgotten about you within 2 years.
Love, Blood and Rhetoric
Just give the skull to Shakespeare, and don't think too hard about where it came from.
What's He Doing with That Thing?
Do a favor for Cleopatra and her strangely hypnotic fanbearer.
Fun in the Sun
Complete the game with the worst ending.
Well, That Was a Letdown
Complete the game with the normal ending.
Nice Legs
Complete the game with the best ending.
Well, Excuuuuse Me!
Complete all side quests in Cambridge.
They Should Probably Work on Their Security
Complete all side quests in Orleans.
Deja Vu in Retrospect
Complete all side quests in 1505 Florence.
How Many CDs Does He Have?
Complete all side quests in Vienna.
Center for Plumbers Who Can't Read Good
Complete all side quests in Philadelphia.
Bulbs? What's a Bulb?
Complete all side quests in Menlo Park.
Where Alph, the Sacred River, Ran
Complete all side quests in the Gobi Desert.
Mr. Aristotle, You're Trying to Seduce Me
Complete all side quests in Athens.
Isn't That a Funny-Looking Animal?
Complete all side quests in London.
A Simple Life? You Mean Boring?
Complete all side quests in Calcutta.
A Hamburger and a Frankfurter Walk into a Mint
Complete all side quests in Mainz.
Ratatouille
Complete all side quests in the Pacific Ocean.
Raphael Is Cool but Rude
Complete all side quests in 1503 Florence.
All the World's a Stage (Or Four)
Complete all side quests in Stratford-upon-Avon.
Snake? SNAAAKE!?
Complete all side quests in Alexandria.
You're Not Cheating, Right?
Fill in a History Page without making any mistakes.
His Undergrad Major was History
Finally put Dr. Mario's college education to use by filling out a History Page before using the Timulator.
88 Nautical Miles Per Hour!
Collect 10 mushrooms and plunge into a whirlpool with a bonus timer of 11 or higher.
Plot a Course for Edutainment!
Have a parent or guardian read the note for them in the manual, then set the Timulator as indicated below.