| States of Germany | 0 | - | 4.96 | 150,179 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,061 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,011 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,489 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,489 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,661 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,763 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,542 |
| Regions of Italy | 0 | - | 4.92 | 74,778 |
| Italian Foods | 0 | - | 4.31 | 72,218 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,855 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,424 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,234 |
| Departments of France | 0 | - | 4.93 | 52,867 |
| Germany Country Quiz | 0 | - | 4.82 | 156,622 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,380 |
| England or Wales? | 0 | - | 4.94 | 45,342 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,603 |
| Official European Union Languages | 0 | - | 4.97 | 236,918 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,727 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,360 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,528 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,556 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,625 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,423 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,577 |
| British to American Food Translation | 0 | - | 3.38 | 51,850 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,248 |
| Celtic Nations | 0 | - | 4.69 | 46,819 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,252 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,883 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,921 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,040 |
| Regions of France | 0 | - | 4.78 | 119,326 |
| France Immigration by Country | 0 | - | 4.72 | 75,986 |
| Famous Germans | 0 | - | 4.50 | 54,640 |
| German Groups of Things | 0 | - | 4.46 | 38,309 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,056 |
| Germany True or False? | 0 | - | 4.61 | 48,539 |
| History of Germany | 0 | - | 4.39 | 52,624 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,480 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,563 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,851 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,478 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,063 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,452 |
| Counties of England | 0 | - | 4.97 | 789,536 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,403 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,185 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,354 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,263 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,296 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,844 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,104 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,243 |
| French Foods | 0 | - | 4.00 | 27,594 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,693 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,265 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,033 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,157 |
| Champions League Winners | 0 | - | 4.92 | 996,837 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,408 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,164 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,389 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,155 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,714 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,243 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,518 |
| Name a Valid African Country | 0 | - | 4.98 | 152,986 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,644 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,325 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,254 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,964 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,304 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,266 |
| Word Chain - France | 0 | - | 4.38 | 42,586 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,195 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,785 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,775 |
| Italy Country Quiz | 0 | - | 4.82 | 122,270 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,447 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,125 |
| The Mafia Quiz | 0 | - | 4.46 | 23,211 |
| History of The Netherlands | 0 | - | 4.46 | 17,320 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,115 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,703 |
| Canary Islands | 0 | - | 4.61 | 17,407 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,979 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,179 |
| British Spellings | 0 | - | 4.07 | 99,245 |
| British Groups of Things | 0 | - | 4.25 | 82,689 |
| British Acronyms | 0 | - | 4.39 | 45,629 |
| UK Immigration by Country | 0 | - | 4.94 | 139,713 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,952 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,254 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,360 |
| Geography of Scotland | 0 | - | 4.63 | 21,488 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,558 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,088 |
| Countries that Beat Australia | 0 | - | 4.92 | 92,133 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,455 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,605 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,020 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,124 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,862 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,009 |
| Random Point on Land to European Country | 0 | - | 4.93 | 76,133 |
| Slavic Languages | 0 | - | 4.67 | 54,000 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,415 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,558 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,965 |
| France A-Z | 0 | - | 4.16 | 38,065 |
| French History Multiple Choice | 0 | - | 4.55 | 32,882 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,322 |
| Geography of Germany | 0 | - | 4.35 | 17,090 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,421 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,154 |
| Name that Greek Letter | 0 | - | 4.94 | 321,761 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,436 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,404 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,259 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,158 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,548 |
| Switzerland A-Z | 0 | - | 4.45 | 25,512 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,925 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,460 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,695 |
| Malta Country Quiz | 0 | - | 4.81 | 30,841 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,895 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,607 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,636 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,113 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,816 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,876 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,174 |
| History of Russia Quiz | 0 | - | 4.49 | 31,798 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,580 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,933 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,102 |
| Famous French People | 0 | - | 4.12 | 27,963 |
| Movies Set in France | 0 | - | 4.26 | 13,076 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| History of Paris | 0 | - | 4.24 | 13,617 |
| Word Chain - Germany | 0 | - | 4.31 | 22,479 |
| The Trojan War | 0 | - | 4.83 | 39,448 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,611 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,377 |
| History of Italy | 0 | - | 4.55 | 31,828 |
| Word Chain - Italy | 0 | - | 4.07 | 23,089 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,190 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,045 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,900 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,073 |
| Roman Emperors | 0 | - | 4.95 | 118,539 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,491 |
| Famous Nordic People | 0 | - | 4.34 | 19,870 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,369 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,702 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,547 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,989 |
| Geography of Spain | 0 | - | 4.59 | 21,970 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,490 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,243 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,471 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,814 |
| People on Money - England | 0 | - | 4.29 | 16,566 |
| Name a Valid English City | 0 | - | 4.19 | 16,633 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,037 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,345 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,159 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,214 |
| Countries that Beat China | 0 | - | 4.86 | 114,751 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 190,974 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,425 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,929 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,875 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,737 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,244 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,945 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,694 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,651 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,034 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,330 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,668 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,005 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,635 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,960 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,001 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,614 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,169 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,627 |
| Capitals of French Regions | 0 | - | 4.45 | 15,988 |
| Kings of France Quiz | 0 | - | 4.20 | 32,568 |
| Capitals of German States | 0 | - | 4.74 | 28,816 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,105 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,505 |
| Ancient Greek Words | 0 | - | 4.92 | 110,734 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,276 |
| Lord of the Rings Decoder | 0 | - | 4.58 | 42,282 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,182 |
