| European Countries by First 2 Letters | 0 | - | 4.95 | 531,695 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,122 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,427 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,419 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,891 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,572 |
| Official European Union Languages | 0 | - | 4.97 | 239,428 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,437 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,165 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,219 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,993 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,602 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,857 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,559 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,053 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,469 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,446 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,102 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,397 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,363 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,885 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,159 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,915 |
| German Groups of Things | 0 | - | 4.47 | 38,594 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,615 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,338 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,649 |
| Champions League Winners | 0 | - | 4.92 | 1,013,073 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,500 |
| Celtic Nations | 0 | - | 4.61 | 47,061 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,555 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,608 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,261 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,696 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,901 |
| States of Germany | 0 | - | 4.95 | 153,979 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,525 |
| Regions of Italy | 0 | - | 4.92 | 76,679 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,646 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,993 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,605 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,805 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,880 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,501 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,284 |
| 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 | 65,777 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,792 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,702 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,597 |
| Departments of France | 0 | - | 4.93 | 54,851 |
| Word Chain - France | 0 | - | 4.38 | 42,896 |
| Italian Foods | 0 | - | 4.30 | 73,124 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,700 |
| British Groups of Things | 0 | - | 4.25 | 82,975 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,085 |
| England or Wales? | 0 | - | 4.94 | 45,892 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,622 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,765 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,443 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,565 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,934 |
| Name a Valid African Country | 0 | - | 4.98 | 154,786 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 297,353 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,325 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,805 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,704 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,147 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,259 |
| Slavic Languages | 0 | - | 4.68 | 54,609 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,384 |
| The Trojan War | 0 | - | 4.83 | 39,930 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,690 |
| Name that Greek Letter | 0 | - | 4.93 | 324,653 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,667 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,704 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,477 |
| Roman Emperors | 0 | - | 4.95 | 120,876 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,725 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,589 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,768 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,908 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,074 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,008 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,011 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,264 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,323 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,343 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,627 |
| 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 | 502,952 |
| Ancient Greek Words | 0 | - | 4.93 | 112,233 |
| History of Italy | 0 | - | 4.55 | 32,107 |
| Word Chain - Italy | 0 | - | 4.07 | 23,205 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,191 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,781 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,463 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,141 |
| 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 | 114,438 |
| 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 | 147,654 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,033 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,764 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,037 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,709 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,038 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,850 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,361 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,576 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,262 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,545 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,196 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,416 |
| 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 | 121,725 |
| France Immigration by Country | 0 | - | 4.70 | 76,827 |
| Famous Germans | 0 | - | 4.50 | 55,664 |
| Capitals of German States | 0 | - | 4.74 | 29,033 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,491 |
| Germany True or False? | 0 | - | 4.61 | 48,960 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,322 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,067 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,033 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,410 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,631 |
| 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 | 280,291 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,057 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,031 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 839,500 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,859 |
| 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 | 43,393 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,817 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,668 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,708 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,345 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,779 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,089 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,894 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,594 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,292 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,929 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,346 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,405 |
| European Physical Geography | 0 | - | 4.26 | 33,572 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,695 |
| 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 | 17,950 |
| Austria... or Australia? | 0 | - | 4.68 | 104,652 |
| Famous French People | 0 | - | 4.07 | 36,000 |
| French Foods | 0 | - | 4.00 | 27,755 |
| Geography of the French Empire | 0 | - | 4.45 | 27,193 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| France Multiple Choice | 0 | - | 4.39 | 40,811 |
| History of France | 0 | - | 4.61 | 57,461 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,541 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,172 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,002 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,350 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,549 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,557 |
| The Mafia Quiz | 0 | - | 4.46 | 23,410 |
| Byzantine History | 0 | - | 4.91 | 28,987 |
| Byzantine Emperors | 0 | - | 4.92 | 14,498 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| The Vikings! | 0 | - | 4.46 | 28,391 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,310 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Canary Islands | 0 | - | 4.62 | 17,513 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,531 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,954 |
| American to British Word Translation | 0 | - | 4.14 | 139,533 |
| British Spellings | 0 | - | 4.06 | 99,558 |
| British Acronyms | 0 | - | 4.40 | 45,899 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,017 |
