| European Countries by First 2 Letters | 0 | - | 4.95 | 531,721 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,139 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,466 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,435 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,913 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,580 |
| Official European Union Languages | 0 | - | 4.97 | 239,447 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,449 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,192 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,222 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,000 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,814 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,876 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,568 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,135 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,472 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,453 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,104 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,403 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,366 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,887 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,212 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,979 |
| German Groups of Things | 0 | - | 4.47 | 38,596 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,619 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,341 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,653 |
| Champions League Winners | 0 | - | 4.92 | 1,013,303 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,510 |
| Celtic Nations | 0 | - | 4.61 | 47,062 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,564 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,611 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,279 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,713 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,941 |
| States of Germany | 0 | - | 4.95 | 154,010 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,539 |
| Regions of Italy | 0 | - | 4.92 | 76,698 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,652 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,014 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,611 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,806 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,887 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,504 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,295 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,829 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,694 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,790 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,801 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,746 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,614 |
| Departments of France | 0 | - | 4.93 | 54,862 |
| Word Chain - France | 0 | - | 4.38 | 42,899 |
| Italian Foods | 0 | - | 4.30 | 73,137 |
| 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 | 45,897 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,649 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,781 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,454 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,575 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,945 |
| Name a Valid African Country | 0 | - | 4.98 | 154,803 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 297,367 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,336 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,812 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,708 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,159 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,271 |
| Slavic Languages | 0 | - | 4.68 | 54,617 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,397 |
| The Trojan War | 0 | - | 4.83 | 39,933 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,729 |
| Name that Greek Letter | 0 | - | 4.93 | 324,674 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,679 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,705 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,485 |
| Roman Emperors | 0 | - | 4.95 | 120,901 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,731 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,591 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,802 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,910 |
| 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 | 47,015 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,265 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,333 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,345 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,638 |
| History of Russia Quiz | 0 | - | 4.47 | 31,985 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,835 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,311 |
| Word Chain - Germany | 0 | - | 4.31 | 22,659 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,992 |
| Ancient Greek Words | 0 | - | 4.93 | 112,248 |
| History of Italy | 0 | - | 4.55 | 32,110 |
| Word Chain - Italy | 0 | - | 4.07 | 23,205 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,207 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,783 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,463 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,145 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,381 |
| Geography of Spain | 0 | - | 4.59 | 22,150 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,384 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,440 |
| Name a Valid English City | 0 | - | 4.19 | 16,797 |
| Imagine Lyrics | 0 | - | 4.53 | 43,501 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,964 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,663 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,044 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,852 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,052 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,720 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,051 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,853 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,366 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,584 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,274 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,866 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,204 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,426 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,646 |
| Capitals of French Regions | 0 | - | 4.45 | 16,154 |
| Regions of France | 0 | - | 4.70 | 121,741 |
| France Immigration by Country | 0 | - | 4.70 | 76,831 |
| Famous Germans | 0 | - | 4.50 | 55,671 |
| Capitals of German States | 0 | - | 4.74 | 29,036 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,496 |
| Germany True or False? | 0 | - | 4.61 | 48,962 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,338 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,132 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,077 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,414 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,636 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,380 |
| British to American Food Translation | 0 | - | 3.38 | 52,018 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,769 |
| Beatles Lyrics First Names | 0 | - | 4.36 | 40,095 |
| Elton John Quiz | 0 | - | 4.49 | 18,510 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,619 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,685 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,332 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,314 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,060 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,042 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 839,532 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,923 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,116 |
| Australian Capitals | 0 | - | 4.92 | 62,804 |
| Word Chain - Australia | 0 | - | 4.38 | 38,217 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,833 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,428 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,821 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,669 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,896 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,347 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,789 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,097 |
| 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 | 83,410 |
| 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 | 49,434 |
| Geography of Russia | 0 | - | 4.57 | 21,574 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,076 |
| History of Austria | 0 | - | 4.70 | 17,952 |
| Austria... or Australia? | 0 | - | 4.68 | 104,661 |
| Famous French People | 0 | - | 4.07 | 36,005 |
| French Foods | 0 | - | 4.00 | 27,758 |
| Geography of the French Empire | 0 | - | 4.45 | 27,194 |
| The French Revolution | 0 | - | 4.47 | 24,111 |
| France Multiple Choice | 0 | - | 4.39 | 40,812 |
| History of France | 0 | - | 4.61 | 57,468 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,542 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,174 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,005 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,376 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,550 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,562 |
| The Mafia Quiz | 0 | - | 4.46 | 23,411 |
| Byzantine History | 0 | - | 4.91 | 28,989 |
| Byzantine Emperors | 0 | - | 4.92 | 14,503 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| The Vikings! | 0 | - | 4.46 | 28,392 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,314 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,552 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,961 |
| American to British Word Translation | 0 | - | 4.14 | 139,540 |
| British Spellings | 0 | - | 4.06 | 99,559 |
| British Acronyms | 0 | - | 4.40 | 45,899 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,022 |
