| Monarchies of Europe | 0 | - | 4.90 | 97,299 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,484 |
| Name the English Monarchs | 0 | - | 4.92 | 497,831 |
| Counties of England | 0 | - | 4.97 | 789,084 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,322 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,228 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,927 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,405 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,387 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,099 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,007 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,109 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,675 |
| States of Germany | 0 | - | 4.96 | 150,015 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,001 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,517 |
| Regions of Italy | 0 | - | 4.92 | 74,692 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,800 |
| History of The Netherlands | 0 | - | 4.46 | 17,310 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,315 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,138 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,901 |
| Monarchies of Asia | 0 | - | 4.97 | 70,591 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,821 |
| Kings of France Quiz | 0 | - | 4.20 | 32,550 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,230 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,113 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,138 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,493 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,145 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,179 |
| Departments of France | 0 | - | 4.93 | 52,795 |
| Germany Country Quiz | 0 | - | 4.82 | 156,518 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,134 |
| Italy Country Quiz | 0 | - | 4.82 | 122,182 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,344 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,067 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,362 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,947 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,625 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,044 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,250 |
| England or Wales? | 0 | - | 4.94 | 45,309 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,163 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,211 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,172 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,764 |
| Geography of the British Empire | 0 | - | 4.48 | 39,469 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,230 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,385 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,806 |
| Name that Greek Letter | 0 | - | 4.94 | 321,633 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,463 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,323 |
| Malta Country Quiz | 0 | - | 4.81 | 30,824 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,951 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,284 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,520 |
| The Only European Country ... | 0 | - | 4.91 | 213,788 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,509 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,768 |
| The Trojan War | 0 | - | 4.83 | 39,425 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,767 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,519 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,039 |
| Roman Emperors | 0 | - | 4.95 | 118,458 |
| British Acronyms | 0 | - | 4.39 | 45,617 |
| Medieval English History | 0 | - | 4.53 | 43,314 |
| History of Russia Quiz | 0 | - | 4.49 | 31,789 |
| French History Multiple Choice | 0 | - | 4.55 | 32,875 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,271 |
| History of Italy | 0 | - | 4.55 | 31,813 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,479 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,979 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,383 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,290 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,951 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,830 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,941 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,090 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,384 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,386 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,889 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,825 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,694 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,208 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,870 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,661 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,619 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,013 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,295 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,648 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,586 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,703 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,272 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,287 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,457 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,739 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,799 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,850 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,243 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,181 |
| Slavic Countries | 0 | - | 4.96 | 110,845 |
| Regions of France | 0 | - | 4.78 | 119,219 |
| France Immigration by Country | 0 | - | 4.72 | 75,958 |
| Famous Germans | 0 | - | 4.50 | 54,606 |
| History of Germany | 0 | - | 4.39 | 52,613 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,464 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,017 |
| Ancient Greek Words | 0 | - | 4.92 | 110,685 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,428 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,771 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,940 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,386 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,686 |
| British History A-Z #1 | 0 | - | 4.45 | 45,802 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,073 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,842 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,305 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,033 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,364 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,835 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,206 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,788 |
| European Countries with One Border | 0 | - | 4.97 | 181,601 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,512 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,770 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,947 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,183 |
| French Inventions | 0 | - | 4.08 | 13,865 |
| History of Paris | 0 | - | 4.24 | 13,614 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,451 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,983 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,041 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,480 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,614 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,103 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,070 |
| People on Money - England | 0 | - | 4.29 | 16,562 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,118 |
| History of Scotland | 0 | - | 4.51 | 21,000 |
| Champions League Winners | 0 | - | 4.92 | 996,204 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,992 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,430 |
| Battle to Country | 0 | - | 4.91 | 52,507 |
| Countries That Border Russia | 0 | - | 4.98 | 458,879 |
| History of Austria | 0 | - | 4.70 | 17,746 |
| Austria Country Quiz | 0 | - | 4.57 | 59,332 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,222 |
| France Country Quiz | 0 | - | 4.70 | 133,815 |
| Geography of the French Empire | 0 | - | 4.48 | 26,927 |
| The French Revolution | 0 | - | 4.46 | 23,782 |
| Countries Bordering France | 0 | - | 4.83 | 398,904 |
| History of France | 0 | - | 4.59 | 56,022 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,383 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,008 |
| Greece Country Quiz | 0 | - | 4.74 | 65,749 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,477 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,233 |
| Netherlands Country Quiz | 0 | - | 4.50 | 79,955 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,748 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,689 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,329 |
| The Portuguese Empire | 0 | - | 4.54 | 11,989 |
| Spain Country Quiz | 0 | - | 4.45 | 127,590 |
| Switzerland Country Quiz | 0 | - | 4.51 | 62,934 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,559 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,170 |
| English Royal Consorts | 0 | - | 4.37 | 37,157 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,606 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,403 |
| Counties of Wales | 0 | - | 4.63 | 38,896 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,874 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,086 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,075 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,524 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,204 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,532 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,888 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,265 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,478 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,155 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,912 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,290 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,502 |
| European Geography A-Z | 0 | - | 4.28 | 48,994 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,181 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,729 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,229 |
| Russia Country Quiz | 0 | - | 4.85 | 113,620 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,845 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,032 |
| German History A-Z | 0 | - | 4.49 | 24,216 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,917 |
| History of Ireland | 0 | - | 4.39 | 30,821 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,943 |
| The Mafia Quiz | 0 | - | 4.46 | 23,205 |
| Canary Islands | 0 | - | 4.61 | 17,401 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,821 |
