| European Countries by First 2 Letters | 0 | - | 4.95 | 528,637 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,555 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,256 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,640 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,072 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,712 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,987 |
| Official European Union Languages | 0 | - | 4.97 | 238,092 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,593 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,455 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,048 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,899 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,874 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,748 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,012 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,610 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,444 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,120 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,355 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,203 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,861 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,151 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,177 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,237 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,949 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,537 |
| German Groups of Things | 0 | - | 4.46 | 38,431 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,280 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,870 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,059 |
| Champions League Winners | 0 | - | 4.92 | 1,003,586 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,271 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,912 |
| Celtic Nations | 0 | - | 4.69 | 46,907 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,884 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,914 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,681 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,333 |
| States of Germany | 0 | - | 4.96 | 151,856 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,867 |
| Regions of Italy | 0 | - | 4.92 | 75,529 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,828 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,608 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,983 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,658 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,021 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,055 |
| Name a Valid African Country | 0 | - | 4.98 | 153,732 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,172 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,608 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,386 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,340 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,754 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,868 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,312 |
| Departments of France | 0 | - | 4.93 | 53,755 |
| Word Chain - France | 0 | - | 4.38 | 42,736 |
| Italian Foods | 0 | - | 4.30 | 72,625 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,513 |
| British Groups of Things | 0 | - | 4.25 | 82,830 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,016 |
| England or Wales? | 0 | - | 4.94 | 45,593 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,713 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,670 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,411 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,738 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 295,930 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,514 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,278 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,553 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,476 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,340 |
| Slavic Languages | 0 | - | 4.68 | 54,264 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,452 |
| The Trojan War | 0 | - | 4.83 | 39,642 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,007 |
| Name that Greek Letter | 0 | - | 4.93 | 323,066 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,519 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,575 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,409 |
| Roman Emperors | 0 | - | 4.95 | 119,643 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,134 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,418 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,582 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,630 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,997 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,685 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,846 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,854 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,083 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,682 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,095 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,835 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,692 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,189 |
| Word Chain - Germany | 0 | - | 4.31 | 22,562 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,495 |
| Ancient Greek Words | 0 | - | 4.93 | 111,333 |
| History of Italy | 0 | - | 4.55 | 31,935 |
| Word Chain - Italy | 0 | - | 4.07 | 23,147 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,628 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,609 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,374 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,649 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,159 |
| Geography of Spain | 0 | - | 4.59 | 22,048 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,327 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,007 |
| Name a Valid English City | 0 | - | 4.19 | 16,699 |
| Imagine Lyrics | 0 | - | 4.53 | 43,211 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,587 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,934 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,843 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,899 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,585 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,327 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,061 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,126 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,122 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,214 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,551 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,234 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,792 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,121 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,001 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,354 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,356 |
| Capitals of French Regions | 0 | - | 4.45 | 16,035 |
| Regions of France | 0 | - | 4.75 | 120,381 |
| France Immigration by Country | 0 | - | 4.70 | 76,394 |
| Famous Germans | 0 | - | 4.50 | 55,158 |
| Capitals of German States | 0 | - | 4.74 | 28,926 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,276 |
| Germany True or False? | 0 | - | 4.61 | 48,736 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,861 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,265 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,140 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,992 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,218 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,232 |
| British to American Food Translation | 0 | - | 3.38 | 51,943 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,597 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,621 |
| Elton John Quiz | 0 | - | 4.48 | 18,455 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,469 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,492 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,220 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,637 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 836,068 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,454 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,471 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,033 |
| Australian Capitals | 0 | - | 4.92 | 62,694 |
| Word Chain - Australia | 0 | - | 4.38 | 38,109 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,711 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,309 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,557 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,458 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,627 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,036 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,231 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,557 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,737 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,390 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,230 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,891 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,495 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,739 |
| European Physical Geography | 0 | - | 4.26 | 33,469 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,004 |
| European Geography A-Z | 0 | - | 4.29 | 49,190 |
| Geography of Russia | 0 | - | 4.57 | 21,508 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,902 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Austria... or Australia? | 0 | - | 4.68 | 104,229 |
| Famous French People | 0 | - | 4.06 | 34,731 |
| French Foods | 0 | - | 4.00 | 27,667 |
| Geography of the French Empire | 0 | - | 4.45 | 27,023 |
| The French Revolution | 0 | - | 4.46 | 23,901 |
| France Multiple Choice | 0 | - | 4.38 | 40,702 |
| History of France | 0 | - | 4.59 | 56,815 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,461 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,932 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,875 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,402 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,426 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,244 |
| The Mafia Quiz | 0 | - | 4.46 | 23,296 |
| Byzantine History | 0 | - | 4.91 | 28,751 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| The Vikings! | 0 | - | 4.46 | 28,319 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,036 |
| The Portuguese Empire | 0 | - | 4.58 | 12,046 |
| Canary Islands | 0 | - | 4.62 | 17,459 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 67,088 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,590 |
| American to British Word Translation | 0 | - | 4.14 | 138,732 |
| British Spellings | 0 | - | 4.06 | 99,401 |
