| Countries Surrounding Rome | 0 | - | 4.97 | 49,784 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,703 |
| Roman Emperors | 0 | - | 4.95 | 121,454 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,115 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,104 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,919 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,097 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,191 |
| Regions of Italy | 0 | - | 4.92 | 77,274 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,486 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,550 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,376 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,298 |
| Departments of France | 0 | - | 4.93 | 55,416 |
| Name the English Monarchs | 0 | - | 4.91 | 507,447 |
| England or Wales? | 0 | - | 4.94 | 46,059 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,871 |
| Official European Union Languages | 0 | - | 4.97 | 240,391 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,840 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,430 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,289 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,469 |
| The Trojan War | 0 | - | 4.83 | 40,084 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,253 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,764 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,281 |
| British Monopoly Board | 0 | - | 4.52 | 41,294 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,393 |
| History of Italy | 0 | - | 4.55 | 32,186 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,531 |
| The Mafia Quiz | 0 | - | 4.46 | 23,454 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,398 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,269 |
| Roman Names for Places | 0 | - | 4.62 | 58,792 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,111 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,147 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,217 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,571 |
| France A-Z | 0 | - | 4.16 | 38,366 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,757 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,513 |
| Italian History A-Z | 0 | - | 4.16 | 17,959 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,750 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,354 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,765 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,274 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,787 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,280 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,798 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,285 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,893 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,171 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,790 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,569 |
| Famous Germans | 0 | - | 4.50 | 55,879 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,262 |
| Famous Irish People | 0 | - | 4.05 | 46,081 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,493 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,628 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,477 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,883 |
| British Geography A-Z | 0 | - | 4.42 | 19,634 |
| London A-Z | 0 | - | 4.10 | 40,912 |
| Champions League Winners | 0 | - | 4.92 | 1,018,168 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,537 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,993 |
| Monarchies of Europe | 0 | - | 4.90 | 99,047 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,960 |
| Countries Bordering France | 0 | - | 4.83 | 405,397 |
| Kings of France Quiz | 0 | - | 4.22 | 32,972 |
| States of Germany | 0 | - | 4.95 | 154,962 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,819 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,279 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,278 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,924 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,443 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,609 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,907 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,874 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,119 |
| Monarchies of Asia | 0 | - | 4.97 | 71,618 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,366 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,962 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,171 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,404 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,657 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,351 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,129 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,700 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,348 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,727 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,693 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,994 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,084 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,971 |
| European Geography A-Z | 0 | - | 4.29 | 49,525 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,831 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,361 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,993 |
| Austria... or Australia? | 0 | - | 4.67 | 104,851 |
| Famous French People | 0 | - | 4.05 | 36,167 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,009 |
| Germany Country Quiz | 0 | - | 4.82 | 159,080 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,249 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,285 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,075 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,450 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,241 |
| Italian Foods | 0 | - | 4.30 | 73,401 |
| History of The Netherlands | 0 | - | 4.46 | 17,572 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,637 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,053 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,133 |
| British Acronyms | 0 | - | 4.40 | 45,979 |
| UK Immigration by Country | 0 | - | 4.94 | 141,913 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,289 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,059 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,223 |
| Famous Scottish People | 0 | - | 4.22 | 18,444 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,507 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,820 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,566 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,939 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,614 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,713 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,020 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,799 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,455 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,171 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,928 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,068 |
| Slavic Languages | 0 | - | 4.67 | 54,787 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,683 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,056 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,999 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,162 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,231 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,569 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,514 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 99,171 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,056 |
| Name that Greek Letter | 0 | - | 4.93 | 325,327 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,489 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,893 |
| Counties of Ireland | 0 | - | 4.92 | 197,717 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,377 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,300 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,681 |
| Countries that Beat Portugal | 0 | - | 4.86 | 60,011 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,667 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,386 |
| Spanish History A-Z | 0 | - | 4.37 | 19,539 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,397 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,444 |
| Switzerland A-Z | 0 | - | 4.45 | 25,794 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,032 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,112 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 76,021 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,683 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,155 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,624 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 32,006 |
| Houses of British Monarchs | 0 | - | 4.54 | 66,031 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,406 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,429 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,047 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,711 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.74 | 64,105 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,280 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,025 |
| History of Russia Quiz | 0 | - | 4.47 | 32,028 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,903 |
| Russian History A-Z | 0 | - | 4.35 | 32,309 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,458 |
| French History A-Z | 0 | - | 4.27 | 25,198 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,225 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,517 |
| Word Chain - Italy | 0 | - | 4.07 | 23,230 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,183 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,744 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,854 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,504 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,651 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,470 |
| Geography of Spain | 0 | - | 4.59 | 22,289 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,584 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,544 |
| People on Money - England | 0 | - | 4.29 | 20,045 |
| Sherlock Holmes Quiz | 0 | - | 4.49 | 26,736 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,859 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,481 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,605 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,839 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,818 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,578 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,251 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,517 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,475 |
