| European Countries by First 2 Letters | 0 | - | 4.96 | 519,957 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 225,646 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 269,732 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 161,568 |
| Save Europeans by Guessing Countries | 0 | - | 4.85 | 202,690 |
| French Geography Quiz #1 | 0 | - | 4.88 | 33,958 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 67,439 |
| Official European Union Languages | 0 | - | 4.98 | 233,468 |
| European Countries in their Native Language | 0 | - | 4.99 | 154,721 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 419,155 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 45,552 |
| Europe Geography Decoder | 0 | - | 4.86 | 68,538 |
| Countries that Beat Switzerland | 0 | - | 4.87 | 41,037 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,301,780 |
| Beatles Songs Quiz | 0 | - | 4.97 | 229,214 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 287,699 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 339,651 |
| Add A Letter - Make a European City | 0 | - | 4.89 | 22,884 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,428 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 70,986 |
| Europe Geography Quiz #4 | 0 | - | 4.56 | 69,403 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,465 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.84 | 85,781 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 304,317 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 159,441 |
| German Groups of Things | 0 | - | 4.46 | 37,983 |
| Germany Multiple Choice | 0 | - | 4.83 | 53,425 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 100,549 |
| Champions League Winners | 0 | - | 4.92 | 978,669 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,537 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 118,745 |
| Celtic Nations | 0 | - | 4.69 | 46,509 |
| Catholic Countries in Europe | 0 | - | 4.83 | 92,545 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 73,896 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 77,466 |
| Federal Subjects of Russia | 0 | - | 4.95 | 138,850 |
| States of Germany | 0 | - | 4.95 | 145,081 |
| Germany Immigration by Country | 0 | - | 4.87 | 78,425 |
| States of the German Confederation in 1848 | 0 | - | 4.88 | 30,543 |
| Regions of Italy | 0 | - | 4.92 | 72,038 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 41,841 |
| Regions of Spain Quiz | 0 | - | 4.90 | 109,446 |
| Cantons of Switzerland | 0 | - | 4.97 | 48,193 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,106 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 132,415 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 89,245 |
| Name a Valid African Country | 0 | - | 4.98 | 150,322 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 170,691 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 62,882 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.70 | 57,447 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 63,529 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 86,746 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 248,708 |
| Name a Valid European Country #2 | 0 | - | 4.93 | 95,973 |
| Departments of France | 0 | - | 4.92 | 49,404 |
| Word Chain - France | 0 | - | 4.38 | 42,223 |
| Italian Foods | 0 | - | 4.30 | 71,005 |
| Countries Surrounding Rome | 0 | - | 4.97 | 48,928 |
| British Groups of Things | 0 | - | 4.25 | 82,405 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,759 |
| England or Wales? | 0 | - | 4.94 | 44,561 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 125,505 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.89 | 105,778 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.95 | 93,321 |
| Name a Valid Asian Country | 0 | - | 4.98 | 118,096 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 289,988 |
| Countries that Beat the United States | 0 | - | 4.93 | 162,250 |
| Countries that Beat Canada | 0 | - | 4.90 | 85,582 |
| Pre-Euro Currencies | 0 | - | 4.43 | 52,057 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,453 |
| Word Scramble - European Countries | 0 | - | 4.73 | 138,234 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 109,346 |
| Slavic Languages | 0 | - | 4.68 | 53,205 |
| Countries that Beat Russia | 0 | - | 4.83 | 80,193 |
| The Trojan War | 0 | - | 4.81 | 38,764 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 629,080 |
| Name that Greek Letter | 0 | - | 4.93 | 317,481 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.83 | 107,588 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,128 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 82,846 |
| Roman Emperors | 0 | - | 4.96 | 114,382 |
| Countries that Beat Portugal | 0 | - | 4.86 | 57,398 |
| Spanish Immigration by Country | 0 | - | 4.61 | 54,788 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,181 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 68,933 |
| Fictional Characters from Great Britain | 0 | - | 4.11 | 31,974 |
| Wonderwall Lyrics | 0 | - | 4.25 | 72,597 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,274 |
| A Quiz About The Beatles | 0 | - | 4.55 | 46,830 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 54,032 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,269 |
| Top European Languages on a Map | 0 | - | 4.78 | 129,295 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,223 |
| French Geography Quiz #2 | 0 | - | 4.63 | 22,808 |
| Word Chain - Germany | 0 | - | 4.30 | 22,289 |
| Olympian Gods Quiz | 0 | - | 4.96 | 478,099 |
| Ancient Greek Words | 0 | - | 4.92 | 108,403 |
| Word Chain - Italy | 0 | - | 4.07 | 22,930 |
| Italy Multiple Choice | 0 | - | 4.74 | 101,847 |
| Geography of the Dutch Empire | 0 | - | 4.68 | 34,130 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,106 |
| Countries that Beat Iceland | 0 | - | 4.81 | 41,460 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 76,659 |
| Geography of Spain | 0 | - | 4.58 | 21,684 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,072 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,050 |
| Name a Valid English City | 0 | - | 4.19 | 16,435 |
| Imagine Lyrics | 0 | - | 4.54 | 42,572 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 39,577 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,541 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 263,482 |
| European Geography By Letter - A | 0 | - | 4.56 | 131,085 |
| European Geography By Letter - B #1 | 0 | - | 4.70 | 109,565 |
| European Geography By Letter - C | 0 | - | 4.46 | 110,699 |
| European Geography By Letter - D | 0 | - | 4.51 | 105,410 |
| European Geography By Letter - L | 0 | - | 4.51 | 110,745 |
| European Geography By Letter - M | 0 | - | 4.52 | 126,451 |
| European Geography By Letter - P #1 | 0 | - | 4.78 | 95,069 |
| European Geography By Letter - N | 0 | - | 4.44 | 98,663 |
| European Geography By Letter - R | 0 | - | 4.41 | 91,616 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,115 |
| European Geography By Letter - T | 0 | - | 4.41 | 79,550 |
| Europe Map Quiz | 0 | - | 5.00 | 4,666,662 |
| European Geography By Letter - S #1 | 0 | - | 4.61 | 98,404 |
| Four Letter European Geography #1 | 0 | - | 4.45 | 26,167 |
| Four Letter European Geography #2 | 0 | - | 4.56 | 18,836 |
| Capitals of French Regions | 0 | - | 4.43 | 15,798 |
| Regions of France | 0 | - | 4.75 | 115,935 |
| France Immigration by Country | 0 | - | 4.73 | 74,961 |
| Famous Germans | 0 | - | 4.48 | 52,478 |
| Capitals of German States | 0 | - | 4.70 | 28,535 |
| Chancellors of Germany, 1949–present | 0 | - | 4.58 | 22,651 |
| Germany True or False? | 0 | - | 4.63 | 47,996 |
| Largest Islands of Greece | 0 | - | 4.59 | 46,288 |
| Famous Italians by Clue | 0 | - | 4.45 | 86,673 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 425,458 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 54,389 |
| Provinces of the Netherlands | 0 | - | 4.77 | 39,379 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 47,756 |
| British to American Food Translation | 0 | - | 3.34 | 51,601 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,024 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,009 |
| Elton John Quiz | 0 | - | 4.48 | 18,292 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 52,915 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 47,883 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 31,897 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 273,732 |
| Most Popular NBA Jerseys | 0 | - | 4.37 | 824,391 |
| Africa Map Quiz | 0 | - | 5.00 | 2,079,532 |
| Oceania Map Quiz | 0 | - | 4.98 | 622,132 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,792 |
| Australian Capitals | 0 | - | 4.92 | 62,330 |
| Word Chain - Australia | 0 | - | 4.38 | 37,757 |
| Hispanic Last Names in the U.S. | 0 | - | 4.30 | 54,332 |
| South American Geography Quiz #2 | 0 | - | 4.68 | 38,836 |
| South American Geography Quiz #1 | 0 | - | 4.74 | 32,189 |
| U.S. State Nicknames Quiz | 0 | - | 4.50 | 49,575 |
| United States Map Quiz | 0 | - | 4.98 | 4,111,344 |
| European Geography By Letter - E | 0 | - | 4.23 | 111,062 |
| European Geography By Letter - F | 0 | - | 4.16 | 90,553 |
| European Geography By Letter - H | 0 | - | 4.29 | 93,990 |
| European Geography By Letter - G | 0 | - | 4.25 | 100,300 |
| European Geography By Letter - I | 0 | - | 4.10 | 93,472 |
| European Geography By Letter - K | 0 | - | 4.14 | 68,366 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,208 |
| European Geography by Letter - W | 0 | - | 4.20 | 81,745 |
| European Physical Geography | 0 | - | 4.26 | 33,143 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 49,920 |
| European Geography A-Z | 0 | - | 4.28 | 48,461 |
| History of Russia Quiz | 0 | - | 4.49 | 31,556 |
| Geography of Russia | 0 | - | 4.57 | 21,218 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,397 |
| History of Austria | 0 | - | 4.70 | 17,496 |
| Austria... or Australia? | 0 | - | 4.69 | 102,930 |
| French Foods | 0 | - | 4.00 | 27,400 |
| Geography of the French Empire | 0 | - | 4.51 | 26,570 |
| The French Revolution | 0 | - | 4.46 | 23,303 |
| France Multiple Choice | 0 | - | 4.38 | 40,364 |
| History of France Quiz | 0 | - | 4.56 | 42,400 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.42 | 23,152 |
| Ancient Greek Trivia | 0 | - | 4.61 | 66,198 |
| Figures from Greek Mythology | 0 | - | 4.90 | 179,292 |
| Famous Italian-Americans | 0 | - | 4.07 | 9,194 |
| History of Italy | 0 | - | 4.55 | 31,506 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,515 |
| The Mafia Quiz | 0 | - | 4.46 | 22,986 |
| Byzantine History | 0 | - | 4.90 | 28,142 |
| History of The Netherlands | 0 | - | 4.46 | 17,016 |
| The Vikings! | 0 | - | 4.46 | 28,072 |
| Sweden Immigration by Country | 0 | - | 4.54 | 54,990 |
| The Portuguese Empire | 0 | - | 4.54 | 11,866 |
| Canary Islands | 0 | - | 4.61 | 17,254 |
| Real Madrid 2010's Starting XI | 0 | - | 4.89 | 63,830 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 28,118 |
| American to British Word Translation | 0 | - | 4.05 | 116,074 |
| British Spellings Quiz | 0 | - | 4.08 | 98,382 |
| British Acronyms | 0 | - | 4.39 | 45,277 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,360 |
| United Kingdom A-Z | 0 | - | 4.53 | 86,372 |
| British Monopoly Board | 0 | - | 4.51 | 40,745 |
