| European Countries by First 2 Letters | 0 | - | 4.95 | 531,710 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,129 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,441 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,426 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,897 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,576 |
| Official European Union Languages | 0 | - | 4.97 | 239,435 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,444 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,179 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,220 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,996 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,649 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,864 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,564 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,085 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,469 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,451 |
| 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 | 61,366 |
| 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 | 174,937 |
| German Groups of Things | 0 | - | 4.47 | 38,595 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,618 |
| 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 | 1,013,182 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,508 |
| Celtic Nations | 0 | - | 4.61 | 47,062 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,560 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,609 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,271 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,703 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,917 |
| States of Germany | 0 | - | 4.95 | 153,993 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,533 |
| Regions of Italy | 0 | - | 4.92 | 76,693 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,649 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,008 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,609 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,805 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,884 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,503 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,289 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,829 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,691 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,783 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,795 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,724 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,606 |
| Departments of France | 0 | - | 4.93 | 54,856 |
| Word Chain - France | 0 | - | 4.38 | 42,898 |
| Italian Foods | 0 | - | 4.30 | 73,128 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,703 |
| British Groups of Things | 0 | - | 4.25 | 82,975 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,085 |
| England or Wales? | 0 | - | 4.94 | 45,895 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,632 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,770 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,449 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,572 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,940 |
| Name a Valid African Country | 0 | - | 4.98 | 154,795 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 297,359 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,331 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,809 |
| 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 | 142,150 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,261 |
| Slavic Languages | 0 | - | 4.68 | 54,612 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,387 |
| The Trojan War | 0 | - | 4.83 | 39,931 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,702 |
| Name that Greek Letter | 0 | - | 4.93 | 324,668 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,675 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,705 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,480 |
| Roman Emperors | 0 | - | 4.95 | 120,885 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,728 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,590 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,784 |
| 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 | 40,833 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,311 |
| Word Chain - Germany | 0 | - | 4.31 | 22,659 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,972 |
| Ancient Greek Words | 0 | - | 4.93 | 112,240 |
| History of Italy | 0 | - | 4.55 | 32,108 |
| Word Chain - Italy | 0 | - | 4.07 | 23,205 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,200 |
| 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 | 77,380 |
| 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 | 16,793 |
| Imagine Lyrics | 0 | - | 4.53 | 43,500 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,963 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,657 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,039 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,808 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,045 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,717 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,044 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,852 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,364 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,581 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,270 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,682 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,203 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,418 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,642 |
| Capitals of French Regions | 0 | - | 4.45 | 16,154 |
| Regions of France | 0 | - | 4.70 | 121,735 |
| France Immigration by Country | 0 | - | 4.70 | 76,828 |
| Famous Germans | 0 | - | 4.50 | 55,667 |
| Capitals of German States | 0 | - | 4.74 | 29,033 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,493 |
| Germany True or False? | 0 | - | 4.61 | 48,961 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,331 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,101 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,060 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,411 |
| 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 | 52,018 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,768 |
| Beatles Lyrics First Names | 0 | - | 4.36 | 40,093 |
| Elton John Quiz | 0 | - | 4.49 | 18,510 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,618 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,684 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,330 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,302 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,058 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,037 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 839,516 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,881 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,114 |
| Australian Capitals | 0 | - | 4.92 | 62,804 |
| Word Chain - Australia | 0 | - | 4.38 | 38,215 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,833 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,413 |
| 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 | 4,167,830 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,347 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,784 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,094 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,900 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,600 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,298 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,932 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,348 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,409 |
| European Physical Geography | 0 | - | 4.26 | 33,572 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,700 |
| European Geography A-Z | 0 | - | 4.29 | 49,432 |
| Geography of Russia | 0 | - | 4.57 | 21,574 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,076 |
| History of Austria | 0 | - | 4.70 | 17,951 |
| Austria... or Australia? | 0 | - | 4.68 | 104,656 |
| Famous French People | 0 | - | 4.07 | 36,003 |
| French Foods | 0 | - | 4.00 | 27,755 |
| Geography of the French Empire | 0 | - | 4.45 | 27,194 |
| The French Revolution | 0 | - | 4.47 | 24,109 |
| France Multiple Choice | 0 | - | 4.39 | 40,811 |
| History of France | 0 | - | 4.61 | 57,464 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,542 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,173 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,003 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,361 |
| 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 | 68,542 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,957 |
| 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 | 41,018 |
