| Germany Multiple Choice | 0 | - | 4.84 | 54,600 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,323 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,598 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,509 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,572 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 88,148 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,661 |
| States of Germany | 0 | - | 4.95 | 153,897 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,501 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,787 |
| Famous Germans | 0 | - | 4.50 | 55,646 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,992 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,320 |
| Departments of France | 0 | - | 4.93 | 54,813 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,691 |
| Name the English Monarchs | 0 | - | 4.91 | 505,173 |
| England or Wales? | 0 | - | 4.94 | 45,879 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,533 |
| Official European Union Languages | 0 | - | 4.97 | 239,372 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,400 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,057 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,000 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,249 |
| The Trojan War | 0 | - | 4.83 | 39,920 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,627 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,448 |
| Roman Emperors | 0 | - | 4.95 | 120,803 |
| British Monopoly Board | 0 | - | 4.52 | 41,231 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,204 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,988 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,862 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,056 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,745 |
| France A-Z | 0 | - | 4.16 | 38,305 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,873 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,464 |
| Celtic Nations | 0 | - | 4.61 | 47,054 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,573 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 120,940 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,168 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,946 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,615 |
| European Geography By Letter - M | 0 | - | 4.69 | 131,954 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,793 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,320 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,541 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,224 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,158 |
| German Groups of Things | 0 | - | 4.47 | 38,585 |
| Capitals of German States | 0 | - | 4.74 | 29,032 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,476 |
| Germany True or False? | 0 | - | 4.61 | 48,955 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,208 |
| Famous Irish People | 0 | - | 4.05 | 46,046 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,028 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,375 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,815 |
| British Geography A-Z | 0 | - | 4.42 | 19,586 |
| London A-Z | 0 | - | 4.10 | 40,848 |
| Champions League Winners | 0 | - | 4.92 | 1,012,647 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,559 |
| Monarchies of Europe | 0 | - | 4.90 | 98,588 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,747 |
| Countries Bordering France | 0 | - | 4.83 | 404,259 |
| Kings of France Quiz | 0 | - | 4.20 | 32,866 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,536 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,261 |
| Regions of Italy | 0 | - | 4.92 | 76,616 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,629 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,301 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,951 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,575 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,801 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,855 |
| Monarchies of Asia | 0 | - | 4.97 | 71,367 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,156 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,593 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,023 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,718 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,023 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,837 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,537 |
| European Geography By Letter - I | 0 | - | 4.09 | 96,237 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,884 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,303 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,378 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,668 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,571 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,515 |
| European Geography A-Z | 0 | - | 4.29 | 49,426 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,679 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,065 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,867 |
| Austria... or Australia? | 0 | - | 4.68 | 104,639 |
| Famous French People | 0 | - | 4.07 | 35,979 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,487 |
| Germany Country Quiz | 0 | - | 4.83 | 158,536 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,866 |
| German History A-Z | 0 | - | 4.49 | 24,789 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,164 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,997 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,985 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,848 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,550 |
| The Mafia Quiz | 0 | - | 4.46 | 23,404 |
| History of The Netherlands | 0 | - | 4.46 | 17,522 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,298 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,553 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,542 |
| British Acronyms | 0 | - | 4.40 | 45,897 |
| UK Immigration by Country | 0 | - | 4.94 | 141,421 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,595 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,401 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,051 |
| Famous Scottish People | 0 | - | 4.22 | 18,424 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,544 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,614 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,692 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,396 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,889 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,851 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,540 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,696 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,697 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,131 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,210 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,748 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,759 |
| Slavic Languages | 0 | - | 4.68 | 54,590 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,656 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,814 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,396 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,111 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,059 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,368 |
| Geography of Germany | 0 | - | 4.35 | 17,241 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,048 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,988 |
| History of Germany | 0 | - | 4.39 | 52,937 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,454 |
| Name that Greek Letter | 0 | - | 4.93 | 324,599 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,123 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,779 |
| Counties of Ireland | 0 | - | 4.92 | 196,757 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,701 |
| Italian History A-Z | 0 | - | 4.21 | 17,828 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,144 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,994 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,005 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 43,976 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,142 |
| Roman Names for Places | 0 | - | 4.62 | 58,594 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,583 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,573 |
| Spanish History A-Z | 0 | - | 4.37 | 19,419 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,735 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,212 |
| Switzerland A-Z | 0 | - | 4.45 | 25,736 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,899 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,068 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 75,630 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,827 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,997 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,986 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,895 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,863 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,936 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,158 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,661 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,280 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,945 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,125 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,599 |
| History of Russia Quiz | 0 | - | 4.47 | 31,980 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,827 |
| Russian History A-Z | 0 | - | 4.35 | 32,045 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,311 |
| French History A-Z | 0 | - | 4.27 | 24,939 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,083 |
| Word Chain - Germany | 0 | - | 4.31 | 22,655 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,836 |
| History of Italy | 0 | - | 4.55 | 32,104 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,168 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,772 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,461 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,627 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,370 |
| Geography of Spain | 0 | - | 4.59 | 22,146 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,562 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,425 |
| People on Money - England | 0 | - | 4.29 | 16,634 |
| Sherlock Holmes Quiz | 0 | - | 4.49 | 26,707 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,629 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,329 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,393 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,527 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,395 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,441 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,092 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,394 |
