| European Countries by First 2 Letters | 0 | - | 4.95 | 528,087 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,093 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,911 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,279 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,378 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,669 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,898 |
| Official European Union Languages | 0 | - | 4.97 | 237,819 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,416 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,852 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,789 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,695 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,324,388 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,237 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,251 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,085 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,332 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,161 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,813 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,096 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,138 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,151 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,545 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,813 |
| German Groups of Things | 0 | - | 4.46 | 38,400 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,218 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,804 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,927 |
| Champions League Winners | 0 | - | 4.92 | 1,001,740 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,224 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,794 |
| Celtic Nations | 0 | - | 4.69 | 46,882 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,661 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,675 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,744 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,458 |
| Federal Subjects of Russia | 0 | - | 4.95 | 145,693 |
| States of Germany | 0 | - | 4.96 | 151,339 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,686 |
| Regions of Italy | 0 | - | 4.92 | 75,319 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 50,942 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,351 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,802 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,632 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,882 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,886 |
| Name a Valid African Country | 0 | - | 4.98 | 153,536 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,915 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,554 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,329 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,203 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,595 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,177 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,056 |
| Departments of France | 0 | - | 4.93 | 53,458 |
| Word Chain - France | 0 | - | 4.38 | 42,699 |
| Italian Foods | 0 | - | 4.31 | 72,522 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,470 |
| British Groups of Things | 0 | - | 4.25 | 82,801 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,002 |
| England or Wales? | 0 | - | 4.94 | 45,522 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,417 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,442 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,147 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,572 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 295,601 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,286 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,175 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,523 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,636 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,354 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,022 |
| Slavic Languages | 0 | - | 4.68 | 54,199 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,323 |
| The Trojan War | 0 | - | 4.83 | 39,598 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,143 |
| Name that Greek Letter | 0 | - | 4.93 | 322,760 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,300 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,538 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,334 |
| Roman Emperors | 0 | - | 4.95 | 119,433 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,014 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,384 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,548 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,598 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,979 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,623 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,819 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,794 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,030 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,566 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,045 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,685 |
| History of Russia Quiz | 0 | - | 4.49 | 31,859 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,664 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,167 |
| Word Chain - Germany | 0 | - | 4.31 | 22,537 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,818 |
| Ancient Greek Words | 0 | - | 4.93 | 111,188 |
| History of Italy | 0 | - | 4.55 | 31,911 |
| Word Chain - Italy | 0 | - | 4.07 | 23,139 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,529 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,587 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,350 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,587 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,117 |
| Geography of Spain | 0 | - | 4.59 | 22,024 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,307 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,947 |
| Name a Valid English City | 0 | - | 4.19 | 16,686 |
| Imagine Lyrics | 0 | - | 4.53 | 43,171 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,521 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,913 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,546 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,737 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,166 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,138 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,026 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,487 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,391 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,063 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,837 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,468 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,658 |
| Europe Map Quiz | 0 | - | 5.00 | 4,749,031 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,827 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,288 |
| Capitals of French Regions | 0 | - | 4.45 | 16,026 |
| Regions of France | 0 | - | 4.78 | 120,114 |
| France Immigration by Country | 0 | - | 4.70 | 76,281 |
| Famous Germans | 0 | - | 4.50 | 54,883 |
| Capitals of German States | 0 | - | 4.74 | 28,902 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,231 |
| Germany True or False? | 0 | - | 4.61 | 48,679 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,774 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,971 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,454 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,885 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,113 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,169 |
| British to American Food Translation | 0 | - | 3.38 | 51,916 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,487 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,595 |
| Elton John Quiz | 0 | - | 4.48 | 18,446 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,435 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,460 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,207 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,352 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 835,270 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,928 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,173 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,022 |
| Australian Capitals | 0 | - | 4.92 | 62,672 |
| Word Chain - Australia | 0 | - | 4.37 | 38,086 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,685 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,276 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,536 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,416 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,847 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,957 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,469 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,886 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,143 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,762 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,702 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,390 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,108 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,454 |
| European Physical Geography | 0 | - | 4.26 | 33,439 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,674 |
| European Geography A-Z | 0 | - | 4.29 | 49,139 |
| Geography of Russia | 0 | - | 4.57 | 21,495 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,876 |
| History of Austria | 0 | - | 4.70 | 17,815 |
| Austria... or Australia? | 0 | - | 4.68 | 104,148 |
| French Foods | 0 | - | 4.00 | 27,651 |
| Geography of the French Empire | 0 | - | 4.45 | 27,011 |
| The French Revolution | 0 | - | 4.46 | 23,878 |
| France Multiple Choice | 0 | - | 4.38 | 40,688 |
| History of France | 0 | - | 4.59 | 56,680 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,443 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,885 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,852 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,032 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,411 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,182 |
| The Mafia Quiz | 0 | - | 4.46 | 23,259 |
| Byzantine History | 0 | - | 4.91 | 28,721 |
| History of The Netherlands | 0 | - | 4.46 | 17,375 |
| The Vikings! | 0 | - | 4.46 | 28,300 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,946 |
| The Portuguese Empire | 0 | - | 4.58 | 12,036 |
| Canary Islands | 0 | - | 4.61 | 17,446 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,873 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,493 |
| American to British Word Translation | 0 | - | 4.13 | 138,475 |
| British Spellings | 0 | - | 4.06 | 99,366 |
| British Acronyms | 0 | - | 4.39 | 45,724 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,827 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,472 |
