| Letter | User | Takes | Quiz | % Correct |
|---|---|---|---|---|
| C | Quizmaster | 27 m | Countries of the World Quiz | 100%
|
| U | Quizmaster | 9.7 m | US States Quiz | 33%
|
| F | Quizmaster | 3.5 m | Fast Typing 1 to 100 | 17%
|
| V | SerbMan | 64 k | Vietnam War Countries | 13%
|
| D | kalbahamut | 637 k | Digits of Pi | 8%
|
| E | Quizmaster | 3.2 m | Europe Map Quiz | 8%
|
| G | Quizmaster | 456 k | General Knowledge Quiz #9 | 8%
|
| K | Aaron197 | 18k | Kenya Country Quiz | 8%
|
| S | Quizmaster | 1.1 m | South America Map Quiz | 8%
|
| X | xaphoonucrazy | 512 | xaphoonucrazy's Bacon Puzzle #2 | 8%
|
| Y | Aaron197 | 15 k | Yemen Country Quiz | 8%
|
| Z | skiesboy | 14 k | Zambia Country Quiz | 8%
|
| A | Quizmaster | 1.6 m | All Country Flags of the World | 4%
|
| B | Quizzer6794 | 1.1 m | Brand Logos Quiz #1 | 4%
|
| H | Quizmaster | 718 k | Harry Potter Last Names | 4%
|
| I | Quizmaster | 481 k | Island Countries Quiz | 4%
|
| J | Quizmaster | 86 k | Japan Country Quiz | 4%
|
| L | Quizmaster | 412 k | Letters of the Greek Alphabet | 4%
|
| M | Quizmaster | 1 m | Middle East Map Quiz | 4%
|
| N | Quizmaster | 1.5 m | NBA Teams Quiz | 4%
|
| O | Quizmaster | 570 k | Original 151 Pokémon | 4%
|
| P | Quizmaster | 819 k | Planets of the Solar System Quiz | 4%
|
| Q | Quizmaster | 42 k | Queen in the Answers | 4%
|
| R | Quizmaster | 1.7 m | Random Capital to Country | 4%
|
| T | Quizmaster | 574 k | Two Letter U.S. State Abbreviations | 4%
|
| W | Quizzer6794 | 3.6 m | World Map Without 20 Random Countries | 4%
|