| Counties of England | 0 | - | 4.97 | 794,355 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,109 |
| Monarchies of Europe | 0 | - | 4.90 | 97,902 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,799 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,071 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,484 |
| States of Germany | 0 | - | 4.96 | 151,752 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,841 |
| Regions of Italy | 0 | - | 4.92 | 75,494 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,731 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,577 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,949 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,502 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,827 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 72,784 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,822 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,729 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,903 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,458 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,561 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,371 |
| Departments of France | 0 | - | 4.93 | 53,694 |
| Germany Country Quiz | 0 | - | 4.82 | 157,507 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,828 |
| Italy Country Quiz | 0 | - | 4.82 | 123,142 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,044 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,759 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,510 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,631 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,317 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,227 |
| England or Wales? | 0 | - | 4.94 | 45,584 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,329 |
| Austria Country Quiz | 0 | - | 4.57 | 59,612 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,544 |
| Name the English Monarchs | 0 | - | 4.91 | 501,224 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,606 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,161 |
| Malta Country Quiz | 0 | - | 4.81 | 30,990 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,411 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,830 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,727 |
| The Only European Country ... | 0 | - | 4.91 | 215,851 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,675 |
| History of The Netherlands | 0 | - | 4.46 | 17,402 |
| British Acronyms | 0 | - | 4.39 | 45,745 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,647 |
| NATO Countries | 0 | - | 4.98 | 279,040 |
| EU Countries Quiz | 0 | - | 4.99 | 272,638 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,241 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,088 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,331 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,471 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,227 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,978 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,056 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,029 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,161 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,493 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,188 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,752 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,065 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,712 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,299 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,376 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,919 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,029 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,939 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,889 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,379 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,942 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,677 |
| Slavic Countries | 0 | - | 4.96 | 111,442 |
| Regions of France | 0 | - | 4.75 | 120,335 |
| France Immigration by Country | 0 | - | 4.70 | 76,371 |
| Famous Germans | 0 | - | 4.50 | 55,122 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,859 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,843 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,222 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,197 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,034 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,945 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,636 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,196 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,846 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,846 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,460 |
| European Countries with One Border | 0 | - | 4.97 | 182,448 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,260 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,825 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,079 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,230 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,666 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,566 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,637 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,161 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,689 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,905 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,975 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,514 |
| People on Money - England | 0 | - | 4.29 | 16,600 |
| Champions League Winners | 0 | - | 4.92 | 1,003,299 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,367 |
| Monarchies of Asia | 0 | - | 4.97 | 70,944 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,753 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,377 |
| Countries That Border Russia | 0 | - | 4.98 | 460,970 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,625 |
| France Country Quiz | 0 | - | 4.70 | 134,702 |
| Countries Bordering France | 0 | - | 4.83 | 401,752 |
| Kings of France Quiz | 0 | - | 4.20 | 32,673 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,502 |
| Greece Country Quiz | 0 | - | 4.74 | 66,102 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,678 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,423 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,353 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,359 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,013 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,715 |
| Spain Country Quiz | 0 | - | 4.45 | 128,250 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,234 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,671 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,291 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,302 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,264 |
| Geography of the British Empire | 0 | - | 4.48 | 39,627 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,654 |
| Counties of Wales | 0 | - | 4.63 | 39,177 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,018 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,720 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,164 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,506 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,680 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,331 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,179 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,845 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,448 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,706 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,967 |
| European Geography A-Z | 0 | - | 4.29 | 49,180 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,197 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,734 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,256 |
| Russia Country Quiz | 0 | - | 4.85 | 114,232 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,212 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,276 |
| Famous French People | 0 | - | 4.06 | 34,360 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,922 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,868 |
| The Mafia Quiz | 0 | - | 4.46 | 23,292 |
| Canary Islands | 0 | - | 4.62 | 17,458 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,662 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,568 |
| British Spellings | 0 | - | 4.06 | 99,396 |
| British Groups of Things | 0 | - | 4.25 | 82,823 |
| UK Immigration by Country | 0 | - | 4.94 | 140,608 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,012 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,340 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 24,978 |
| British Monopoly Board | 0 | - | 4.52 | 41,133 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,156 |
| Geography of Scotland | 0 | - | 4.63 | 21,580 |
| Medieval English History | 0 | - | 4.53 | 43,448 |
| The Margaret Thatcher Premiership | 0 | - | 3.79 | 9,231 |
| Famous Scottish People | 0 | - | 4.22 | 18,386 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,659 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,793 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,616 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,295 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,105 |
| U.S. States by Governor | 0 | - | 4.43 | 18,036 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,662 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,642 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,462 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,178 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,536 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,022 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,256 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,291 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,315 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,703 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,138 |
| Countries that Border Poland | 0 | - | 4.99 | 172,001 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,688 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,091 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,065 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,788 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,724 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,218 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,700 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,613 |
| 20 Questions About France | 0 | - | 4.11 | 32,384 |
| France A-Z | 0 | - | 4.16 | 38,161 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,774 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,070 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,487 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,960 |
| History of Germany | 0 | - | 4.39 | 52,770 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,853 |
