| European Countries by First 2 Letters | 0 | - | 4.95 | 526,696 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,843 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,478 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,407 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,984 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,549 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,675 |
| Official European Union Languages | 0 | - | 4.97 | 237,147 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,013 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,603 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,586 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,599 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,003 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,367 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,470 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,667 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,257 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,025 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,661 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,984 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,022 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,934 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,147 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,468 |
| German Groups of Things | 0 | - | 4.46 | 38,327 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,083 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,074 |
| Champions League Winners | 0 | - | 4.92 | 997,604 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,033 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,428 |
| Celtic Nations | 0 | - | 4.69 | 46,836 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,453 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,327 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,405 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,940 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,439 |
| States of Germany | 0 | - | 4.96 | 150,398 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,129 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,601 |
| Regions of Italy | 0 | - | 4.92 | 74,876 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,919 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,534 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,443 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,565 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,477 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,207 |
| Name a Valid African Country | 0 | - | 4.98 | 153,082 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,346 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,434 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,194 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,914 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,100 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,299 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,418 |
| Departments of France | 0 | - | 4.93 | 52,974 |
| Word Chain - France | 0 | - | 4.38 | 42,606 |
| Italian Foods | 0 | - | 4.31 | 72,272 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,395 |
| British Groups of Things | 0 | - | 4.25 | 82,715 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,968 |
| England or Wales? | 0 | - | 4.94 | 45,383 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,706 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,862 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,685 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,173 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 294,498 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,728 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,938 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,472 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,610 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,066 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,292 |
| Slavic Languages | 0 | - | 4.67 | 54,034 |
| Countries that Beat Russia | 0 | - | 4.84 | 82,001 |
| The Trojan War | 0 | - | 4.83 | 39,474 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,782 |
| Name that Greek Letter | 0 | - | 4.94 | 321,903 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,736 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,450 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,120 |
| Roman Emperors | 0 | - | 4.95 | 118,653 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,761 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,274 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,490 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,480 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,933 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,483 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,708 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,605 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,928 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,285 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,906 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,262 |
| History of Russia Quiz | 0 | - | 4.49 | 31,804 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,594 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,112 |
| Word Chain - Germany | 0 | - | 4.31 | 22,486 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,992 |
| Ancient Greek Words | 0 | - | 4.92 | 110,824 |
| History of Italy | 0 | - | 4.55 | 31,850 |
| Word Chain - Italy | 0 | - | 4.07 | 23,100 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,256 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,503 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,295 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,398 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,010 |
| Geography of Spain | 0 | - | 4.59 | 21,984 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,249 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,836 |
| Name a Valid English City | 0 | - | 4.19 | 16,642 |
| Imagine Lyrics | 0 | - | 4.53 | 43,084 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,349 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,822 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,714 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,487 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,971 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,933 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,784 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,295 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,044 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,800 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,689 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,067 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,388 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,475 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,655 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,214 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,667 |
| Capitals of French Regions | 0 | - | 4.45 | 15,995 |
| Regions of France | 0 | - | 4.78 | 119,464 |
| France Immigration by Country | 0 | - | 4.72 | 76,029 |
| Famous Germans | 0 | - | 4.50 | 54,682 |
| Capitals of German States | 0 | - | 4.74 | 28,826 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,124 |
| Germany True or False? | 0 | - | 4.61 | 48,568 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,546 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,632 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,050 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,676 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,892 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,084 |
| British to American Food Translation | 0 | - | 3.38 | 51,872 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,413 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,495 |
| Elton John Quiz | 0 | - | 4.48 | 18,412 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,344 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,358 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,171 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,302 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 833,203 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,038 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,255 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,989 |
| Australian Capitals | 0 | - | 4.92 | 62,605 |
| Word Chain - Australia | 0 | - | 4.37 | 38,027 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,629 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,217 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,484 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,315 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,823 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,781 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,284 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,719 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,956 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,343 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,548 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,217 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,971 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,336 |
| European Physical Geography | 0 | - | 4.26 | 33,385 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,553 |
| European Geography A-Z | 0 | - | 4.28 | 49,037 |
| Geography of Russia | 0 | - | 4.57 | 21,441 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,804 |
| History of Austria | 0 | - | 4.70 | 17,769 |
| Austria... or Australia? | 0 | - | 4.68 | 103,939 |
| French Foods | 0 | - | 4.00 | 27,603 |
| Geography of the French Empire | 0 | - | 4.45 | 26,954 |
| The French Revolution | 0 | - | 4.46 | 23,810 |
| France Multiple Choice | 0 | - | 4.38 | 40,650 |
| History of France | 0 | - | 4.59 | 56,246 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,399 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,805 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,795 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,236 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,327 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,027 |
| The Mafia Quiz | 0 | - | 4.46 | 23,214 |
| Byzantine History | 0 | - | 4.91 | 28,653 |
| History of The Netherlands | 0 | - | 4.46 | 17,334 |
| The Vikings! | 0 | - | 4.46 | 28,258 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,736 |
| The Portuguese Empire | 0 | - | 4.54 | 12,002 |
| Canary Islands | 0 | - | 4.61 | 17,416 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,331 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,222 |
| American to British Word Translation | 0 | - | 4.12 | 136,082 |
| British Spellings | 0 | - | 4.07 | 99,278 |
| British Acronyms | 0 | - | 4.39 | 45,649 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,745 |
