| Monarchies of Europe | 0 | - | 4.90 | 98,139 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,108 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,275 |
| Name the English Monarchs | 0 | - | 4.91 | 502,609 |
| Counties of England | 0 | - | 4.97 | 796,654 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,005 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,538 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,222 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 81,750 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,663 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,994 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,876 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,423 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,807 |
| States of Germany | 0 | - | 4.96 | 152,556 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,030 |
| Regions of Italy | 0 | - | 4.92 | 75,863 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,146 |
| History of The Netherlands | 0 | - | 4.46 | 17,433 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,931 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,200 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 93,995 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,779 |
| Monarchies of Asia | 0 | - | 4.97 | 71,086 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,726 |
| Kings of France Quiz | 0 | - | 4.20 | 32,743 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,110 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,995 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,490 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,242 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,116 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,683 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,735 |
| Departments of France | 0 | - | 4.93 | 54,091 |
| Germany Country Quiz | 0 | - | 4.83 | 157,840 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,319 |
| Italy Country Quiz | 0 | - | 4.80 | 123,396 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,360 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,034 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,545 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,921 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,644 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,266 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,598 |
| England or Wales? | 0 | - | 4.94 | 45,686 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,173 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,034 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,350 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,467 |
| Geography of the British Empire | 0 | - | 4.48 | 39,671 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,791 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,387 |
| Name that Greek Letter | 0 | - | 4.93 | 323,443 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,531 |
| Malta Country Quiz | 0 | - | 4.81 | 31,055 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,016 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,445 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,227 |
| The Only European Country ... | 0 | - | 4.91 | 216,601 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,114 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,993 |
| The Trojan War | 0 | - | 4.83 | 39,723 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,913 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,835 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,524 |
| Roman Emperors | 0 | - | 4.95 | 120,032 |
| British Acronyms | 0 | - | 4.40 | 45,799 |
| Medieval English History | 0 | - | 4.53 | 43,507 |
| History of Russia Quiz | 0 | - | 4.47 | 31,917 |
| French History Multiple Choice | 0 | - | 4.55 | 33,037 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,963 |
| History of Italy | 0 | - | 4.55 | 31,973 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,659 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,235 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,862 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,791 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,661 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,143 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,959 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,349 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,210 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,006 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,233 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 118,838 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,962 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,614 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,511 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,647 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,538 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,840 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,694 |
| European Geography By Letter - V | 0 | - | 4.43 | 93,005 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,433 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,640 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,597 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,653 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,200 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,689 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,148 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,979 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,500 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,820 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,277 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,183 |
| Slavic Countries | 0 | - | 4.96 | 111,652 |
| Regions of France | 0 | - | 4.72 | 120,773 |
| France Immigration by Country | 0 | - | 4.70 | 76,508 |
| Famous Germans | 0 | - | 4.50 | 55,291 |
| History of Germany | 0 | - | 4.39 | 52,818 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,015 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,797 |
| Ancient Greek Words | 0 | - | 4.93 | 111,594 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,491 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,353 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,242 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,626 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,746 |
| British History A-Z #1 | 0 | - | 4.45 | 46,481 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,149 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,926 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,450 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,849 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,512 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,295 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,124 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,753 |
| European Countries with One Border | 0 | - | 4.97 | 182,769 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,567 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,978 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,132 |
| Russian History A-Z | 0 | - | 4.38 | 31,711 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,892 |
| French Inventions | 0 | - | 4.08 | 13,899 |
| History of Paris | 0 | - | 4.24 | 13,647 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,165 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,140 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,104 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,087 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,130 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,535 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,625 |
| People on Money - England | 0 | - | 4.29 | 16,610 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,262 |
| History of Scotland | 0 | - | 4.51 | 21,091 |
| Champions League Winners | 0 | - | 4.92 | 1,006,639 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,505 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,885 |
| Battle to Country | 0 | - | 4.91 | 53,332 |
| Countries That Border Russia | 0 | - | 4.98 | 461,716 |
| History of Austria | 0 | - | 4.70 | 17,861 |
| Austria Country Quiz | 0 | - | 4.57 | 59,733 |
| Belgium Country Quiz | 0 | - | 4.73 | 71,790 |
| France Country Quiz | 0 | - | 4.70 | 134,970 |
| Geography of the French Empire | 0 | - | 4.45 | 27,059 |
| The French Revolution | 0 | - | 4.47 | 23,929 |
| Countries Bordering France | 0 | - | 4.83 | 402,527 |
| History of France | 0 | - | 4.59 | 56,973 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,391 |
| Greece Country Quiz | 0 | - | 4.74 | 66,247 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,747 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,503 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,525 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,457 |
| The Vikings! | 0 | - | 4.46 | 28,343 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,124 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,899 |
| The Portuguese Empire | 0 | - | 4.58 | 12,064 |
| Spain Country Quiz | 0 | - | 4.44 | 128,521 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,368 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,727 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,323 |
| English Royal Consorts | 0 | - | 4.38 | 37,351 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,696 |
| Counties of Wales | 0 | - | 4.63 | 39,269 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,858 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,341 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,170 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,876 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,629 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,918 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,051 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,720 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,536 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,173 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,734 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,925 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,187 |
| European Geography A-Z | 0 | - | 4.29 | 49,265 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,807 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,980 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,708 |
| Russia Country Quiz | 0 | - | 4.85 | 114,480 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,336 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,342 |
| Famous French People | 0 | - | 4.06 | 35,570 |
| German History A-Z | 0 | - | 4.49 | 24,605 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,940 |
| History of Ireland | 0 | - | 4.39 | 31,176 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,327 |
| The Mafia Quiz | 0 | - | 4.46 | 23,321 |
