| European Countries by First 2 Letters | 0 | - | 4.96 | 456,642 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 200,281 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 246,443 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 142,457 |
| Save Europeans by Guessing Countries | 0 | - | 4.85 | 166,325 |
| Official European Union Languages | 0 | - | 4.98 | 200,033 |
| European Countries in their Native Language | 0 | - | 4.99 | 143,745 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 385,483 |
| Countries that Beat Switzerland | 0 | - | 4.85 | 37,542 |
| Europe Geography Decoder | 0 | - | 4.89 | 63,170 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 39,019 |
| French Geography Quiz #1 | 0 | - | 4.86 | 31,011 |
| Beatles Songs Quiz | 0 | - | 4.95 | 205,624 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 273,413 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,181,124 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 20,828 |
| Foods in a Full English Breakfast | 0 | - | 4.41 | 73,293 |
| Champions League Winners | 0 | - | 4.91 | 850,436 |
| Europe Geography Quiz #1 | 0 | - | 4.53 | 67,022 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 67,482 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 66,163 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 57,834 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.90 | 79,533 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 284,719 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 115,321 |
| German Groups of Things | 0 | - | 4.43 | 35,930 |
| Germany Multiple Choice | 0 | - | 4.81 | 49,264 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,700 |
| Regions of Spain Quiz | 0 | - | 4.85 | 94,641 |
| Cantons of Switzerland | 0 | - | 4.96 | 40,147 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 268,914 |
| Asian Countries with the Shortest Names | 0 | - | 4.98 | 121,385 |
| Africa Geography Quiz #1 | 0 | - | 4.92 | 46,064 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 100,666 |
| Celtic Nations | 0 | - | 4.76 | 44,623 |
| Catholic Countries in Europe | 0 | - | 4.87 | 83,524 |
| Category Elimination - European Geography #3 | 0 | - | 4.84 | 65,458 |
| Federal Subjects of Russia | 0 | - | 4.95 | 112,041 |
| States of Germany | 0 | - | 4.94 | 123,237 |
| Germany Immigration by Country | 0 | - | 4.90 | 69,566 |
| States of the German Confederation in 1848 | 0 | - | 4.83 | 26,419 |
| Counties of Ireland | 0 | - | 4.89 | 158,895 |
| Regions of Italy | 0 | - | 4.88 | 60,222 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,556 |
| British Groups of Things | 0 | - | 4.26 | 80,103 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,722 |
| England or Wales? | 0 | - | 4.93 | 40,171 |
| All Champions League Teams Ever | 0 | - | 4.89 | 104,142 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.90 | 92,519 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 81,986 |
| Name a Valid Asian Country | 0 | - | 4.98 | 92,190 |
| Category Elimination - African Geography #1 | 0 | - | 4.89 | 79,427 |
| Name a Valid African Country | 0 | - | 4.98 | 123,601 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 146,531 |
| Count to 10 in Europe: Pro | 0 | - | 4.80 | 60,856 |
| Europe Geography Quiz #3 | 0 | - | 4.32 | 59,905 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,758 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.93 | 56,201 |
| Category Elimination - European Countries #1 | 0 | - | 4.88 | 76,488 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 188,025 |
| Name a Valid European Country #2 | 0 | - | 4.93 | 84,078 |
| Word Chain - France | 0 | - | 4.38 | 39,949 |
| Italian Foods | 0 | - | 4.25 | 64,047 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,626 |
| Roman Emperors | 0 | - | 4.95 | 95,689 |
| Spanish Immigration by Country | 0 | - | 4.63 | 51,793 |
| Most Common First Names in Spain | 0 | - | 4.25 | 43,586 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 65,712 |
| Wonderwall Lyrics | 0 | - | 4.22 | 68,703 |
| Best-Selling British Musical Acts | 0 | - | 4.47 | 43,473 |
| A Quiz About The Beatles | 0 | - | 4.57 | 42,640 |
| Countries that Beat the United States | 0 | - | 4.92 | 145,314 |
| Countries that Beat Canada | 0 | - | 4.91 | 78,019 |
| Pre-Euro Currencies | 0 | - | 4.42 | 49,371 |
| Word Scramble - European Countries | 0 | - | 4.72 | 113,711 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 85,106 |
| Slavic Languages | 0 | - | 4.58 | 48,667 |
| The Trojan War | 0 | - | 4.81 | 35,893 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 583,523 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.81 | 85,181 |
| Geography of the Dutch Empire | 0 | - | 4.71 | 32,415 |
| Most Common Last Names in Sweden | 0 | - | 4.41 | 14,072 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 74,499 |
| Geography of Spain | 0 | - | 4.52 | 20,323 |
| Word Chain - United Kingdom | 0 | - | 4.04 | 27,946 |
| Members of the British Royal Family | 0 | - | 4.11 | 109,214 |
| Name a Valid English City | 0 | - | 4.16 | 15,303 |
| Imagine Lyrics | 0 | - | 4.49 | 39,743 |
| Beatles Songs by Synonyms | 0 | - | 4.65 | 35,613 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.96 | 22,775 |
| Top European Languages on a Map | 0 | - | 4.76 | 117,934 |
| Russia Multiple Choice | 0 | - | 4.55 | 38,054 |
| French Geography Quiz #2 | 0 | - | 4.64 | 21,287 |
| Word Chain - Germany | 0 | - | 4.29 | 21,073 |
| Olympian Gods Quiz | 0 | - | 4.96 | 456,830 |
| Name that Greek Letter | 0 | - | 4.94 | 295,637 |
| Ancient Greek Words | 0 | - | 4.90 | 97,209 |
| Word Chain - Italy | 0 | - | 4.08 | 21,983 |
| Italy Multiple Choice | 0 | - | 4.74 | 93,658 |
| #1 Hits of the 2010s | 0 | - | 4.40 | 269,119 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 398,746 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 48,550 |
| Provinces of the Netherlands | 0 | - | 4.61 | 33,227 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 46,001 |
| British to American Food Translation. | 0 | - | 3.47 | 50,433 |
| British Acronyms | 0 | - | 4.42 | 43,327 |
| Fictional Characters from Great Britain | 0 | - | 4.10 | 31,210 |
| Asia Geography Quiz #1 | 0 | - | 4.80 | 50,883 |
| Asia Geography Quiz #2 | 0 | - | 4.59 | 45,304 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 254,934 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 244,429 |
| European Geography By Letter - A | 0 | - | 4.51 | 124,287 |
| European Geography By Letter - B #1 | 0 | - | 4.72 | 103,466 |
| European Geography By Letter - C | 0 | - | 4.43 | 104,842 |
| European Geography By Letter - D | 0 | - | 4.52 | 99,444 |
| European Geography By Letter - L | 0 | - | 4.51 | 104,845 |
| European Geography By Letter - M | 0 | - | 4.55 | 114,341 |
| European Geography By Letter - P | 0 | - | 4.79 | 89,452 |
| European Geography By Letter - N | 0 | - | 4.43 | 93,354 |
| European Geography By Letter - V | 0 | - | 4.45 | 86,386 |
| Europe Map Quiz | 0 | - | 5.00 | 4,284,595 |
| European Geography By Letter - S #1 | 0 | - | 4.57 | 93,839 |
| European Geography By Letter - B #2 | 0 | - | 4.72 | 61,962 |
| Regions of France | 0 | - | 4.63 | 100,177 |
| France Immigration by Country | 0 | - | 4.80 | 68,835 |
| Capitals of German States | 0 | - | 4.67 | 27,103 |
| Chancellors of Germany, 1949–present | 0 | - | 4.53 | 15,245 |
| Germany True or False? | 0 | - | 4.63 | 44,392 |
| Largest Islands of Greece | 0 | - | 4.57 | 39,566 |
| Can You Name All Of One Direction's Songs? | 0 | - | 4.46 | 88,460 |
| Capitals of Italian Regions | 0 | - | 4.52 | 26,089 |
| Most Popular NBA Jerseys | 0 | - | 4.34 | 760,389 |
| Byzantine History | 0 | - | 4.87 | 26,203 |
| History of The Netherlands | 0 | - | 4.42 | 15,739 |
| The Vikings! | 0 | - | 4.44 | 27,097 |
| Sweden Immigration by Country | 0 | - | 4.66 | 42,218 |
| The Portuguese Empire | 0 | - | 4.54 | 11,330 |
| Canary Islands | 0 | - | 4.60 | 16,543 |
| Real Madrid 2010's Starting XI | 0 | - | 4.85 | 50,756 |
| Switzerland Immigration by Country | 0 | - | 4.79 | 20,827 |
| British Words Quiz #2 | 0 | - | 4.04 | 106,830 |
| British Spellings Quiz | 0 | - | 4.04 | 94,618 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,307 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,809 |
| British Monopoly Board | 0 | - | 4.51 | 39,215 |
| Geography of Scotland | 0 | - | 4.62 | 19,558 |
| Title in the Lyrics #2 - The Beatles | 0 | - | 4.52 | 86,390 |
| First Lines of Beatles Songs | 0 | - | 4.39 | 42,550 |
| Viva la Vida Lyrics | 0 | - | 4.40 | 36,169 |
| Champions League Top 4 | 0 | - | 4.77 | 104,583 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,342,799 |
| Asia Map Quiz | 0 | - | 4.99 | 783,277 |
| Asia Geography Quiz #3 | 0 | - | 4.51 | 30,664 |
| Asian Last Names in the United States | 0 | - | 4.41 | 43,195 |
| Africa Map Quiz | 0 | - | 5.00 | 1,936,042 |
| Africa Geography Quiz #2 | 0 | - | 4.58 | 31,095 |
| Oceania Map Quiz | 0 | - | 4.97 | 566,859 |
| Oceania Geography Quiz | 0 | - | 4.54 | 20,840 |
| Australian Capitals | 0 | - | 4.92 | 60,316 |
| Word Chain - Australia | 0 | - | 4.38 | 36,152 |
| Hispanic Last Names in the U.S. | 0 | - | 4.29 | 52,592 |
| South American Geography Quiz #2 | 0 | - | 4.71 | 36,977 |
| U.S. State Nicknames Quiz | 0 | - | 4.49 | 46,051 |
| United States Map Quiz | 0 | - | 4.98 | 3,897,718 |
| European Geography By Letter - E | 0 | - | 4.20 | 105,338 |
| European Geography By Letter - F | 0 | - | 4.15 | 85,198 |
| European Geography By Letter - H | 0 | - | 4.29 | 88,554 |
| European Geography By Letter - G | 0 | - | 4.24 | 95,010 |
| European Geography By Letter - I | 0 | - | 4.09 | 88,711 |
| European Geography By Letter - K | 0 | - | 4.16 | 64,426 |
| European Geography By Letter - O | 0 | - | 4.27 | 57,691 |
| European Geography By Letter - R | 0 | - | 4.39 | 87,471 |
| European Geography by Letter - W | 0 | - | 4.21 | 78,213 |
| European Geography By Letter - T | 0 | - | 4.39 | 70,835 |
| European Physical Geography | 0 | - | 4.19 | 31,896 |
| European Geography By Letter - S #2 | 0 | - | 4.16 | 46,694 |
| European Geography A-Z | 0 | - | 4.40 | 45,332 |
| History of Russia Quiz | 0 | - | 4.48 | 29,841 |
| Geography of Russia | 0 | - | 4.54 | 20,155 |
| Word Chain - Russia | 0 | - | 4.41 | 14,804 |
| Slovakia... or Slovenia? | 0 | - | 4.79 | 39,633 |
| History of Austria | 0 | - | 4.68 | 16,367 |
| Austria... or Australia? | 0 | - | 4.79 | 97,882 |
| French Foods | 0 | - | 3.94 | 26,386 |
| Geography of the French Empire | 0 | - | 4.49 | 25,392 |
| The French Revolution | 0 | - | 4.45 | 21,908 |
| France Multiple Choice | 0 | - | 4.40 | 38,469 |
| History of France Quiz | 0 | - | 4.55 | 39,646 |
| Famous Germans | 0 | - | 4.39 | 35,171 |
| Ancient Greek Trivia | 0 | - | 4.55 | 63,342 |
| Figures from Greek Mythology | 0 | - | 4.92 | 169,271 |
| History of Ireland Quiz | 0 | - | 4.43 | 18,879 |
| Famous Italians | 0 | - | 4.40 | 66,101 |
| Most Popular Types of Pasta | 0 | - | 3.91 | 29,720 |
| Famous Italian-Americans | 0 | - | 4.16 | 7,280 |
| History of Italy | 0 | - | 4.49 | 29,760 |
| Countries Italy Declared War On | 0 | - | 4.79 | 39,898 |
| The Mafia Quiz | 0 | - | 4.47 | 21,563 |
| Best Selling Artists by Letter Quiz | 0 | - | 4.09 | 40,422 |
| Most Popular NFL Jerseys | 0 | - | 4.13 | 210,158 |
