| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,338 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,835 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,162 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,029 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,663 |
| Counties of England | 0 | - | 4.97 | 792,429 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,737 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,518 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,847 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,950 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,480 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,365 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,758 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,140 |
| States of Germany | 0 | - | 4.96 | 151,042 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,427 |
| Regions of Italy | 0 | - | 4.92 | 75,192 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 46,773 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,091 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,725 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,335 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,456 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,293 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,692 |
| Departments of France | 0 | - | 4.93 | 53,292 |
| Germany Country Quiz | 0 | - | 4.82 | 157,166 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,542 |
| Italy Country Quiz | 0 | - | 4.82 | 122,658 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,808 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,443 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,434 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,392 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,840 |
| England or Wales? | 0 | - | 4.94 | 45,486 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,526 |
| Spain Country Quiz | 0 | - | 4.45 | 128,031 |
| Name the English Monarchs | 0 | - | 4.92 | 500,053 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,262 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,087 |
| Geography of the British Empire | 0 | - | 4.48 | 39,581 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,530 |
| French Inventions | 0 | - | 4.08 | 13,876 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,540 |
| Name that Greek Letter | 0 | - | 4.93 | 322,520 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,207 |
| Malta Country Quiz | 0 | - | 4.81 | 30,930 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,756 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,902 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,190 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,293 |
| The Only European Country ... | 0 | - | 4.91 | 215,092 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,291 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,867 |
| The Trojan War | 0 | - | 4.83 | 39,559 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,841 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,145 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,274 |
| Roman Emperors | 0 | - | 4.95 | 119,226 |
| History of The Netherlands | 0 | - | 4.46 | 17,358 |
| Canary Islands | 0 | - | 4.61 | 17,437 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,656 |
| Medieval English History | 0 | - | 4.53 | 43,399 |
| History of Russia Quiz | 0 | - | 4.49 | 31,842 |
| French History Multiple Choice | 0 | - | 4.55 | 32,944 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,047 |
| History of Italy | 0 | - | 4.55 | 31,895 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,562 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,082 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,713 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,045 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,893 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,154 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 67,813 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,234,369 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,359 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,132 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,687 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,388 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,749 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,275 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,430 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,723 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,517 |
| Slavic Countries | 0 | - | 4.96 | 111,241 |
| Regions of France | 0 | - | 4.77 | 119,944 |
| France Immigration by Country | 0 | - | 4.72 | 76,185 |
| History of Germany | 0 | - | 4.39 | 52,722 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,716 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,350 |
| Ancient Greek Words | 0 | - | 4.93 | 111,089 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,053 |
| History of Spain | 0 | - | 4.29 | 21,043 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,940 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,153 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,820 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,502 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,725 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,110 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,445 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,613 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,370 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,904 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,482 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,229 |
| Monarchies of Europe | 0 | - | 4.90 | 97,690 |
| European Countries with One Border | 0 | - | 4.97 | 182,102 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,969 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,673 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,258 |
| Russian Inventions | 0 | - | 4.39 | 12,915 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,526 |
| History of Paris | 0 | - | 4.24 | 13,629 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,141 |
| Italian Inventions | 0 | - | 3.81 | 18,424 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,066 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,113 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,832 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,247 |
| English Inventions #1 | 0 | - | 3.15 | 23,535 |
| English Inventions #2 | 0 | - | 4.00 | 8,682 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,636 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,181 |
| History of Scotland | 0 | - | 4.51 | 21,046 |
| Champions League Winners | 0 | - | 4.92 | 1,000,586 |
| Countries That Border Russia | 0 | - | 4.98 | 460,297 |
| History of Austria | 0 | - | 4.70 | 17,798 |
| Austria Country Quiz | 0 | - | 4.57 | 59,528 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,478 |
| France Country Quiz | 0 | - | 4.70 | 134,471 |
| Geography of the French Empire | 0 | - | 4.45 | 26,999 |
| The French Revolution | 0 | - | 4.46 | 23,860 |
| Countries Bordering France | 0 | - | 4.83 | 401,085 |
| Kings of France Quiz | 0 | - | 4.20 | 32,627 |
| History of France | 0 | - | 4.59 | 56,610 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,984 |
| Greece Country Quiz | 0 | - | 4.74 | 65,974 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,603 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,359 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,221 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 90,113 |
| The Vikings! | 0 | - | 4.46 | 28,285 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,850 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,579 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,130 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,433 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,627 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,257 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,617 |
| Counties of Wales | 0 | - | 4.63 | 39,064 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,302 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,624 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,476 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,740 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,696 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,064 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,647 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,883 |
| Russia Country Quiz | 0 | - | 4.85 | 114,032 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,084 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,189 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,822 |
| History of Ireland | 0 | - | 4.39 | 31,005 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,139 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,415 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,227 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,377 |
| British Spellings | 0 | - | 4.06 | 99,352 |
| British Groups of Things | 0 | - | 4.25 | 82,776 |
| British Acronyms | 0 | - | 4.39 | 45,702 |
| UK Immigration by Country | 0 | - | 4.94 | 140,198 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,993 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,927 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 24,794 |
| Geography of Scotland | 0 | - | 4.63 | 21,545 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,130 |
| Scottish Inventions | 0 | - | 3.83 | 9,945 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,226 |
| Chinese Inventions | 0 | - | 4.30 | 33,755 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,673,439 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,764 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,743 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,926 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,086 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,819 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,119 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,461 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,988 |
| Countries that Border Poland | 0 | - | 4.99 | 171,769 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,558 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,502 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,925 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,722 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,659 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,055 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,631 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,023 |
| 20 Questions About France | 0 | - | 4.11 | 32,363 |
