| European Countries by First 2 Letters | 0 | - | 4.95 | 531,706 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,126 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,437 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,423 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,896 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,575 |
| Official European Union Languages | 0 | - | 4.97 | 239,434 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,440 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,174 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,219 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,994 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,624 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,863 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,563 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,074 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,469 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,450 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,103 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,401 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,365 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,886 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,204 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,932 |
| German Groups of Things | 0 | - | 4.47 | 38,595 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,617 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,339 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,650 |
| Champions League Winners | 0 | - | 4.92 | 1,013,150 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,506 |
| Celtic Nations | 0 | - | 4.61 | 47,061 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,558 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,609 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,269 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,702 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,913 |
| States of Germany | 0 | - | 4.95 | 153,988 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,532 |
| Regions of Italy | 0 | - | 4.92 | 76,685 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,649 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,001 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,607 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,805 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,881 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,502 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,286 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,828 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,691 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,781 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,794 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,717 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,602 |
| Departments of France | 0 | - | 4.93 | 54,854 |
| Word Chain - France | 0 | - | 4.38 | 42,898 |
| Italian Foods | 0 | - | 4.30 | 73,127 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,702 |
| British Groups of Things | 0 | - | 4.25 | 82,975 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,085 |
| England or Wales? | 0 | - | 4.94 | 45,893 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,628 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,769 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,448 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,571 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,936 |
| Name a Valid African Country | 0 | - | 4.98 | 154,791 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 297,358 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,329 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,808 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,707 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,149 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,260 |
| Slavic Languages | 0 | - | 4.68 | 54,611 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,387 |
| The Trojan War | 0 | - | 4.83 | 39,930 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,696 |
| Name that Greek Letter | 0 | - | 4.93 | 324,663 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,672 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,705 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,478 |
| Roman Emperors | 0 | - | 4.95 | 120,882 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,727 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,590 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,782 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,908 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,075 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,008 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,013 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,265 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,330 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,343 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,633 |
| History of Russia Quiz | 0 | - | 4.47 | 31,985 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,831 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,311 |
| Word Chain - Germany | 0 | - | 4.31 | 22,659 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,963 |
| Ancient Greek Words | 0 | - | 4.93 | 112,239 |
| History of Italy | 0 | - | 4.55 | 32,107 |
| Word Chain - Italy | 0 | - | 4.07 | 23,205 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,196 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,782 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,463 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,142 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,379 |
| Geography of Spain | 0 | - | 4.59 | 22,149 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,384 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,439 |
| Name a Valid English City | 0 | - | 4.19 | 16,792 |
| Imagine Lyrics | 0 | - | 4.53 | 43,500 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,963 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,656 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,039 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,794 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,041 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,713 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,042 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,851 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,362 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,580 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,267 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,646 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,200 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,418 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,641 |
| Capitals of French Regions | 0 | - | 4.45 | 16,154 |
| Regions of France | 0 | - | 4.70 | 121,730 |
| France Immigration by Country | 0 | - | 4.70 | 76,828 |
| Famous Germans | 0 | - | 4.50 | 55,665 |
| Capitals of German States | 0 | - | 4.74 | 29,033 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,492 |
| Germany True or False? | 0 | - | 4.61 | 48,961 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,330 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,095 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,056 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,410 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,633 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,379 |
| British to American Food Translation | 0 | - | 3.38 | 52,017 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,768 |
| Beatles Lyrics First Names | 0 | - | 4.36 | 40,092 |
| Elton John Quiz | 0 | - | 4.49 | 18,510 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,617 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,683 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,329 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,299 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,057 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,036 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 839,513 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,878 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,114 |
| Australian Capitals | 0 | - | 4.92 | 62,804 |
| Word Chain - Australia | 0 | - | 4.38 | 38,214 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,833 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,407 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,820 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,668 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,786 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,347 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,782 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,092 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,898 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,598 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,296 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,931 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,346 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,407 |
| European Physical Geography | 0 | - | 4.26 | 33,572 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,697 |
| European Geography A-Z | 0 | - | 4.29 | 49,431 |
| Geography of Russia | 0 | - | 4.57 | 21,574 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,075 |
| History of Austria | 0 | - | 4.70 | 17,951 |
| Austria... or Australia? | 0 | - | 4.68 | 104,655 |
| Famous French People | 0 | - | 4.07 | 36,002 |
| French Foods | 0 | - | 4.00 | 27,755 |
| Geography of the French Empire | 0 | - | 4.45 | 27,194 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| France Multiple Choice | 0 | - | 4.39 | 40,811 |
| History of France | 0 | - | 4.61 | 57,463 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,542 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,172 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,003 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,355 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,549 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,560 |
| The Mafia Quiz | 0 | - | 4.46 | 23,410 |
| Byzantine History | 0 | - | 4.91 | 28,987 |
| Byzantine Emperors | 0 | - | 4.92 | 14,500 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| The Vikings! | 0 | - | 4.46 | 28,391 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,311 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Canary Islands | 0 | - | 4.62 | 17,513 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,541 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,956 |
| American to British Word Translation | 0 | - | 4.14 | 139,535 |
| British Spellings | 0 | - | 4.06 | 99,558 |
| British Acronyms | 0 | - | 4.40 | 45,899 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,017 |
