| Germany Multiple Choice | 0 | - | 4.84 | 54,189 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,731 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,629 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,606 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,567 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,663 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,291 |
| States of Germany | 0 | - | 4.96 | 150,999 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,333 |
| Famous Germans | 0 | - | 4.50 | 54,816 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,685 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,013 |
| Departments of France | 0 | - | 4.93 | 53,260 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,426 |
| Name the English Monarchs | 0 | - | 4.92 | 499,958 |
| England or Wales? | 0 | - | 4.94 | 45,475 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,837 |
| Official European Union Languages | 0 | - | 4.97 | 237,609 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,286 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,456 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,625 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,417 |
| The Trojan War | 0 | - | 4.83 | 39,550 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,116 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,265 |
| Roman Emperors | 0 | - | 4.95 | 119,193 |
| British Monopoly Board | 0 | - | 4.52 | 41,095 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,734 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,662 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,080 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,215 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,340 |
| France A-Z | 0 | - | 4.16 | 38,110 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,357 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,314 |
| Celtic Nations | 0 | - | 4.69 | 46,871 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,661 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,116 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,096 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,973 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,434 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,295 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,020 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,803 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,434 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,591 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,792 |
| German Groups of Things | 0 | - | 4.46 | 38,375 |
| Capitals of German States | 0 | - | 4.74 | 28,889 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,195 |
| Germany True or False? | 0 | - | 4.61 | 48,659 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,073 |
| Famous Irish People | 0 | - | 4.05 | 45,903 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,850 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,148 |
| UK Cities Map Quiz | 0 | - | 4.95 | 463,167 |
| British Geography A-Z | 0 | - | 4.41 | 19,464 |
| London A-Z | 0 | - | 4.10 | 40,694 |
| Champions League Winners | 0 | - | 4.92 | 1,000,419 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,794 |
| Monarchies of Europe | 0 | - | 4.90 | 97,672 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,166 |
| Countries Bordering France | 0 | - | 4.83 | 401,022 |
| Kings of France Quiz | 0 | - | 4.20 | 32,623 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,939 |
| Regions of Italy | 0 | - | 4.92 | 75,149 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,084 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,810 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,127 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,697 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,613 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,166 |
| Monarchies of Asia | 0 | - | 4.97 | 70,814 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,611 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,559 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,430 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,670 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,422 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,846 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,091 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,710 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,669 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,356 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,082 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,424 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,645 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,603 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,456 |
| European Geography A-Z | 0 | - | 4.29 | 49,102 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,288 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,658 |
| Austria... or Australia? | 0 | - | 4.68 | 104,087 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,675 |
| Germany Country Quiz | 0 | - | 4.82 | 157,133 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,525 |
| German History A-Z | 0 | - | 4.49 | 24,509 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,863 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,834 |
| Italy Country Quiz | 0 | - | 4.82 | 122,636 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,776 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,420 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,131 |
| The Mafia Quiz | 0 | - | 4.46 | 23,248 |
| History of The Netherlands | 0 | - | 4.46 | 17,354 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,377 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,011 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,396 |
| British Acronyms | 0 | - | 4.39 | 45,695 |
| UK Immigration by Country | 0 | - | 4.94 | 140,072 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,878 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,800 |
| Famous Scottish People | 0 | - | 4.22 | 18,352 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,197 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,674 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,255 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,006 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,715 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,729 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,500 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,260 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,798 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,298 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,099 |
| Slavic Languages | 0 | - | 4.68 | 54,144 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,522 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,587 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,013 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,143 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,997 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,687 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,967 |
| Geography of Germany | 0 | - | 4.35 | 17,134 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,791 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,315 |
| History of Germany | 0 | - | 4.39 | 52,718 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,413 |
| Name that Greek Letter | 0 | - | 4.93 | 322,486 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,227 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,530 |
| Counties of Ireland | 0 | - | 4.92 | 193,957 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,519 |
| Italian History A-Z | 0 | - | 4.21 | 17,623 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,625 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,115 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,858 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,618 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,777 |
| Roman Names for Places | 0 | - | 4.62 | 58,041 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,333 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,532 |
| Spanish History A-Z | 0 | - | 4.37 | 19,221 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,185 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,642 |
| Switzerland A-Z | 0 | - | 4.45 | 25,572 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,557 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,964 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,624 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,418 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,570 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,825 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,680 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,456 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,023 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,993 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,203 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,058 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,557 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,684 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,550 |
| History of Russia Quiz | 0 | - | 4.49 | 31,838 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,634 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,150 |
| Famous French People | 0 | - | 4.12 | 28,127 |
| French History A-Z | 0 | - | 4.22 | 24,367 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,821 |
| Word Chain - Germany | 0 | - | 4.31 | 22,520 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,248 |
| History of Italy | 0 | - | 4.55 | 31,893 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,421 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,554 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,332 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,564 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,089 |
| Geography of Spain | 0 | - | 4.59 | 22,015 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,497 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,900 |
| People on Money - England | 0 | - | 4.29 | 16,588 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,498 |
| Sherlock Holmes Quiz | 0 | - | 4.49 | 26,604 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,143 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,329 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,007 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,931 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,769 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,718 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,123 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,760 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,069 |
