| European Countries by First 2 Letters | 0 | - | 4.95 | 528,692 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,608 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,279 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,673 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,227 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,716 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,997 |
| Official European Union Languages | 0 | - | 4.97 | 238,122 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,612 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,490 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,062 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,908 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,878 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,755 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,191 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,649 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,453 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,182 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,360 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,207 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,863 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,152 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,181 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,245 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,962 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,600 |
| German Groups of Things | 0 | - | 4.46 | 38,438 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,285 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,873 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,067 |
| Champions League Winners | 0 | - | 4.92 | 1,003,713 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,277 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,931 |
| Celtic Nations | 0 | - | 4.69 | 46,908 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,902 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 77,944 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,700 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,388 |
| States of Germany | 0 | - | 4.96 | 151,904 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,886 |
| Regions of Italy | 0 | - | 4.92 | 75,545 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,868 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,635 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,009 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,660 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,045 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,083 |
| Name a Valid African Country | 0 | - | 4.98 | 153,754 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,187 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,611 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,390 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,345 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,778 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,942 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,336 |
| Departments of France | 0 | - | 4.93 | 53,778 |
| Word Chain - France | 0 | - | 4.38 | 42,740 |
| Italian Foods | 0 | - | 4.30 | 72,642 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,516 |
| British Groups of Things | 0 | - | 4.25 | 82,831 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,017 |
| England or Wales? | 0 | - | 4.94 | 45,599 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,734 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,698 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,528 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,761 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 295,949 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,536 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,289 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,555 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,643 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,487 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,373 |
| Slavic Languages | 0 | - | 4.68 | 54,270 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,460 |
| The Trojan War | 0 | - | 4.83 | 39,648 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,100 |
| Name that Greek Letter | 0 | - | 4.93 | 323,086 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,534 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,576 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,418 |
| Roman Emperors | 0 | - | 4.95 | 119,655 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,144 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,420 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,584 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,632 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,998 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,690 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,859 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,861 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,088 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,689 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,100 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,847 |
| History of Russia Quiz | 0 | - | 4.49 | 31,879 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,695 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,193 |
| Word Chain - Germany | 0 | - | 4.31 | 22,563 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,563 |
| Ancient Greek Words | 0 | - | 4.93 | 111,350 |
| History of Italy | 0 | - | 4.55 | 31,936 |
| Word Chain - Italy | 0 | - | 4.07 | 23,148 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,639 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,613 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,375 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,659 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,165 |
| Geography of Spain | 0 | - | 4.59 | 22,050 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,327 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,010 |
| Name a Valid English City | 0 | - | 4.19 | 16,700 |
| Imagine Lyrics | 0 | - | 4.53 | 43,219 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,592 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,937 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,868 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,025 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,612 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,348 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,079 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,141 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,146 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,227 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,564 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,248 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,804 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,139 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,412 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,367 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,360 |
| Capitals of French Regions | 0 | - | 4.45 | 16,038 |
| Regions of France | 0 | - | 4.75 | 120,408 |
| France Immigration by Country | 0 | - | 4.70 | 76,401 |
| Famous Germans | 0 | - | 4.50 | 55,170 |
| Capitals of German States | 0 | - | 4.74 | 28,930 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,282 |
| Germany True or False? | 0 | - | 4.61 | 48,738 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,874 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,293 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,291 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,001 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,234 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,235 |
| British to American Food Translation | 0 | - | 3.38 | 51,943 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,606 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,629 |
| Elton John Quiz | 0 | - | 4.48 | 18,457 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,472 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,494 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,223 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,677 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 836,101 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,605 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,571 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,033 |
| Australian Capitals | 0 | - | 4.92 | 62,694 |
| Word Chain - Australia | 0 | - | 4.38 | 38,112 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,713 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,311 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,557 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,461 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,921 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,045 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,246 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,574 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,752 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,405 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,246 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,903 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,507 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,750 |
| European Physical Geography | 0 | - | 4.26 | 33,470 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,014 |
| European Geography A-Z | 0 | - | 4.29 | 49,196 |
| Geography of Russia | 0 | - | 4.57 | 21,508 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,906 |
| History of Austria | 0 | - | 4.70 | 17,834 |
| Austria... or Australia? | 0 | - | 4.68 | 104,230 |
| Famous French People | 0 | - | 4.06 | 34,903 |
| French Foods | 0 | - | 4.00 | 27,670 |
| Geography of the French Empire | 0 | - | 4.45 | 27,025 |
| The French Revolution | 0 | - | 4.46 | 23,901 |
| France Multiple Choice | 0 | - | 4.39 | 40,707 |
| History of France | 0 | - | 4.59 | 56,826 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,464 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,937 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,875 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,434 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,428 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,248 |
| The Mafia Quiz | 0 | - | 4.46 | 23,297 |
| Byzantine History | 0 | - | 4.91 | 28,755 |
| History of The Netherlands | 0 | - | 4.46 | 17,407 |
| The Vikings! | 0 | - | 4.46 | 28,319 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,043 |
| The Portuguese Empire | 0 | - | 4.58 | 12,047 |
| Canary Islands | 0 | - | 4.62 | 17,460 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 67,113 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,601 |
| American to British Word Translation | 0 | - | 4.14 | 138,746 |
| British Spellings | 0 | - | 4.06 | 99,404 |
