| Year | Game | Description | Answer | % Correct |
|---|---|---|---|---|
| 1988 | Super Mario Bros. 3 | The classic | Boo | 97%
|
| 1990 | Super Mario World | Large version of the classic | Big Boo | 79%
|
| 2007 | Super Mario Galaxy | Explodes on contact | Bomb Boo | 51%
|
| 1990 | Super Mario World | Will transform into a block | Block Boo | 46%
|
| 2015 | Mario & Luigi: Paper Jam | Paper versions of Boos that have come into the real-world! | Paper Boo | 44%
|
| 2006 | New Super Mario Bros. | Increases its size by inhaling air while someone is looking at it | Balloon Boo | 41%
|
| 1995 | Yoshi's Island | When attacked these balloon-like ghosts will inflate and pop | Boo Balloon | 41%
|
| 2012 | New Super Mario Bros. 2 | A Boo under the effects of a Gold Ring | Gold Boo | 41%
|
| 2010 | Super Mario Galaxy 2 | Ghostly versions of the Octogoomba | Octoboo | 38%
|
| 2011 | Super Mario 3D Land | A Boo under the effects of a Super Leaf | Tail Boo | 38%
|
| 2006 | New Super Mario Bros. | Attacks by swinging its fists wildly | Broozer | 36%
|
| 1997 | Yoshi's Story | Small, itty-bitty versions of the classic | Mini Boo | 36%
|
| 2020 | Paper Mario: The Origami King | Boo "created" by King Olly | Origami Boo | 36%
|
| 2015 | Mario & Luigi: Paper Jam | Same as the above but they prefer using their fists to fight | Paper Broozer | 36%
|
| 1988 | Super Mario Bros. 3 | Moves along the ground | Stretch | 36%
|
| 1990 | Super Mario World | Holds a blue flame from a fishing rod while riding atop a cloud | Fishin' Boo | 33%
|
| 1990 | Super Mario World | Ghostly dinosaur | Eerie | 31%
|
| 2011 | Super Mario 3D Land | Small ghost with stubby arms and two big buck teeth | Peepa | 31%
|
| 1999 | Super Mario Bros. Deluxe | Third opponent of You VS. Boo | Red Boo | 31%
|
| 1999 | Super Mario Bros. Deluxe | Final (and fastest) opponent of You VS. Boo | Black Boo | 26%
|
| 2004 | Paper Mario: The Thousand-Year Door | Purple in colour, it is more powerful than a regular Boo | Dark Boo | 26%
|
| 1999 | Super Mario Bros. Deluxe | Second opponent of You VS. Boo | Green Boo | 26%
|
| 1996 | Super Mario RPG | Despite their name (and their size), they are much stronger than normal Boos | Li'l Boo | 26%
|
| 2001 | Super Mario Sunshine | Embraces its inner Snorlax and blocks the way by napping | Sleepy Boo | 21%
|
| 2016 | Mini Mario & Friends: amiibo Challenge | Wind-up versions of a regular Boo | Toy Boo | 21%
|
| 1997 | Yoshi's Story | Ghosts that like to hide in jelly | Jelly Ghost | 18%
|
| 2005 | Super Princess Peach | Larger version of the above Boo | Mad Big Boo | 18%
|
| 2005 | Super Princess Peach | Angry Boos that fly towards you when looked at | Mad Boo | 18%
|
| 2012 | New Super Mario Bros. 2 | An extremely large version of the classic | Boohemoth | 15%
|
| 2020 | Paper Mario: The Origami King | Large paper-mache Boo found in the Scorching Sandpaper Desert | Paper Macho Boo | 15%
|
| 2015 | Yoshi's Woolly World | Larger version of the above Boo | Big Frame Boo | 13%
|
| 2015 | Yoshi's Woolly World | Boos constructed out of a metal frame | Frame Boo | 13%
|
| 1992 | Super Mario Land 2: Six Golden Coins | The spirit of a different, more iconic enemy | Ghost Goomba | 13%
|
| 1995 | Yoshi's Island | Its eyes have a cover on them, so it senses the player via sound instead | Blindfold Boo | 10%
|
| 2007 | Super Paper Mario | A Boo covered in shadow, found only in the Flopside Pit of 100 Trials | Dark Dark Boo | 8%
|
| 2014 | Mario Kart 8 | Possessed suits of armour that smash racers with their hammer | Hammer Knight | 5%
|
| 2005 | Super Princess Peach | Walk quietly past this ghost to not wake it up, otherwise it will... wake up! | C. Fishin' Boo | 3%
|
| 2009 | Mario & Luigi: Bowser's Inside Story | Pixelated ghost and one of Bowser Memory L's minions | Digital Boo | 3%
|