| European Countries by First 2 Letters | 0 | - | 4.95 | 531,902 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,230 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,520 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,509 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,008 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,021 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,596 |
| Official European Union Languages | 0 | - | 4.97 | 239,489 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,487 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,324 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,238 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,009 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,024 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,945 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,598 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,335 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,477 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,459 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,115 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,412 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,378 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,905 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,293 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,102 |
| German Groups of Things | 0 | - | 4.47 | 38,603 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,635 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,359 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,670 |
| Champions League Winners | 0 | - | 4.92 | 1,013,781 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,533 |
| Celtic Nations | 0 | - | 4.61 | 47,068 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,590 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,642 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,323 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,753 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,028 |
| States of Germany | 0 | - | 4.95 | 154,086 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,567 |
| Regions of Italy | 0 | - | 4.92 | 76,764 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,676 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,068 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,634 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,814 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,928 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,514 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,327 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,835 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,700 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,819 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,840 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,887 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,659 |
| Departments of France | 0 | - | 4.93 | 54,904 |
| Word Chain - France | 0 | - | 4.38 | 42,905 |
| Italian Foods | 0 | - | 4.30 | 73,157 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,711 |
| British Groups of Things | 0 | - | 4.25 | 82,977 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,089 |
| England or Wales? | 0 | - | 4.94 | 45,906 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,708 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,836 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,487 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,606 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,978 |
| Name a Valid African Country | 0 | - | 4.98 | 154,843 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 297,402 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,379 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,840 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,711 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,708 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,165 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,332 |
| Slavic Languages | 0 | - | 4.67 | 54,627 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,425 |
| The Trojan War | 0 | - | 4.83 | 39,940 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,879 |
| Name that Greek Letter | 0 | - | 4.93 | 324,724 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,721 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,710 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,503 |
| Roman Emperors | 0 | - | 4.95 | 120,942 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,753 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,594 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,930 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,916 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,077 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,019 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,021 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,276 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,362 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,350 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,671 |
| History of Russia Quiz | 0 | - | 4.47 | 31,988 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,837 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,314 |
| Word Chain - Germany | 0 | - | 4.31 | 22,661 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,114 |
| Ancient Greek Words | 0 | - | 4.93 | 112,286 |
| History of Italy | 0 | - | 4.55 | 32,115 |
| Word Chain - Italy | 0 | - | 4.07 | 23,208 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,226 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,788 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,468 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,154 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,391 |
| Geography of Spain | 0 | - | 4.59 | 22,156 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,389 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,445 |
| Name a Valid English City | 0 | - | 4.19 | 16,799 |
| Imagine Lyrics | 0 | - | 4.53 | 43,506 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,977 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,703 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,084 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,097 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,090 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,747 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,091 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,870 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,385 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,600 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,299 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,682 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,218 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,447 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,667 |
| Capitals of French Regions | 0 | - | 4.45 | 16,157 |
| Regions of France | 0 | - | 4.70 | 121,802 |
| France Immigration by Country | 0 | - | 4.70 | 76,845 |
| Famous Germans | 0 | - | 4.50 | 55,700 |
| Capitals of German States | 0 | - | 4.74 | 29,041 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,507 |
| Germany True or False? | 0 | - | 4.61 | 48,975 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,360 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,238 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,167 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,423 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,650 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,385 |
| British to American Food Translation | 0 | - | 3.38 | 52,018 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,775 |
| Beatles Lyrics First Names | 0 | - | 4.36 | 40,111 |
| Elton John Quiz | 0 | - | 4.49 | 18,512 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,625 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,696 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,339 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,358 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,067 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,085 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 839,660 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,164 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,122 |
| Australian Capitals | 0 | - | 4.92 | 62,810 |
| Word Chain - Australia | 0 | - | 4.38 | 38,221 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,836 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,546 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,831 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,680 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,288 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,359 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,820 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,121 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,925 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,632 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,320 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,955 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,372 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,423 |
| European Physical Geography | 0 | - | 4.26 | 33,579 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,712 |
| European Geography A-Z | 0 | - | 4.29 | 49,444 |
| Geography of Russia | 0 | - | 4.57 | 21,577 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,085 |
| History of Austria | 0 | - | 4.70 | 17,959 |
| Austria... or Australia? | 0 | - | 4.68 | 104,682 |
| Famous French People | 0 | - | 4.07 | 36,019 |
| French Foods | 0 | - | 4.00 | 27,759 |
| Geography of the French Empire | 0 | - | 4.45 | 27,200 |
| The French Revolution | 0 | - | 4.47 | 24,120 |
| France Multiple Choice | 0 | - | 4.39 | 40,816 |
| History of France | 0 | - | 4.61 | 57,493 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,546 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,183 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,012 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,442 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,556 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,572 |
| The Mafia Quiz | 0 | - | 4.46 | 23,413 |
| Byzantine History | 0 | - | 4.91 | 28,997 |
| Byzantine Emperors | 0 | - | 4.93 | 14,524 |
| History of The Netherlands | 0 | - | 4.46 | 17,531 |
| The Vikings! | 0 | - | 4.46 | 28,395 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,323 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,591 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,981 |
| American to British Word Translation | 0 | - | 4.14 | 139,563 |
| British Spellings | 0 | - | 4.06 | 99,569 |
| British Acronyms | 0 | - | 4.40 | 45,905 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,028 |
