| Name the English Monarchs | 0 | - | 4.92 | 497,422 |
| Monarchies of Europe | 0 | - | 4.90 | 97,219 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,789 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,304 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,254 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 69,996 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,917 |
| Europe Map Quiz | 0 | - | 5.00 | 4,727,758 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,481 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,176 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,037 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,719 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,105 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,118 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,154 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,702 |
| Geography of the British Empire | 0 | - | 4.48 | 39,462 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,127 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,134 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,052 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,047 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,863 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,155 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,973 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,752 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,079 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,351 |
| The Only European Country ... | 0 | - | 4.91 | 213,523 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,340 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,357 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,256 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,906 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,079 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,354 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,678 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,591 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,201 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,064 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,406 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,189 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,156 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,076 |
| Slavic Countries | 0 | - | 4.96 | 110,775 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,617 |
| Counties of England | 0 | - | 4.97 | 788,422 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,799 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,684 |
| British History A-Z #1 | 0 | - | 4.45 | 45,754 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,066 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,179 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,295 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,361 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,968 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,231 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,667 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,116 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,661 |
| European Countries with One Border | 0 | - | 4.97 | 181,471 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 177,979 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,484 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,102 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,011 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,564 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,930 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,846 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,959 |
| Monarchies of Asia | 0 | - | 4.97 | 70,543 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,381 |
| Communist Countries in History | 0 | - | 4.63 | 492,122 |
| Battle to Country | 0 | - | 4.91 | 52,444 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,619 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,600 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,099 |
| Countries That Border Russia | 0 | - | 4.98 | 458,571 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,616 |
| Countries Bordering France | 0 | - | 4.85 | 396,839 |
| History of France | 0 | - | 4.59 | 55,897 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,901 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,724 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,485 |
| English Royal Consorts | 0 | - | 4.37 | 37,140 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,586 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,521 |
| Political Movements by Country | 0 | - | 4.46 | 72,230 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,722 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,300 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 90,985 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,645 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,009 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,711 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,246 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,923 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,324 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,046 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,611 |
| Russia Country Quiz | 0 | - | 4.85 | 113,565 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,797 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,000 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,070 |
| Germany Country Quiz | 0 | - | 4.82 | 156,411 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,061 |
| Italy Country Quiz | 0 | - | 4.82 | 122,087 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,259 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 150,988 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,910 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,875 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,528 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,677 |
| UK Immigration by Country | 0 | - | 4.94 | 139,499 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 137,986 |
| Former Dominions of the British Empire | 0 | - | 4.30 | 24,066 |
| Medieval English History | 0 | - | 4.53 | 43,292 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,969 |
| Countries of the Popes | 0 | - | 4.79 | 127,084 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,453 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,161 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,568 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,452 |
| National Founders | 0 | - | 4.40 | 83,622 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,131 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,049 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,869 |
| U.S. States by Governor | 0 | - | 4.43 | 17,971 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,557 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,663 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,529 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,027 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,754 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,153 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,780 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,727 |
| Countries that Border Poland | 0 | - | 4.99 | 171,224 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,335 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,174 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,613 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,586 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,518 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,655 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,359 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,660 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,468 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,758 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,065 |
| History of Germany | 0 | - | 4.39 | 52,592 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,244 |
| Name that Greek Letter | 0 | - | 4.94 | 321,445 |
| Counties of Ireland | 0 | - | 4.92 | 192,814 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,372 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,180 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,001 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,141 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,159 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,443 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,935 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,815 |
| The Reign of Queen Elizabeth II | 0 | - | 4.35 | 35,658 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,612 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,705 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 396,741 |
| Malta Country Quiz | 0 | - | 4.81 | 30,794 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,221 |
| Hindu Countries | 0 | - | 4.85 | 49,450 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,355 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,893 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,140 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,700 |
| The American Civil War | 0 | - | 4.62 | 52,099 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,787 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,564 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,513 |
| European Cities Beginning with B - Click Map | 0 | - | 4.75 | 77,254 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,087 |
| Random European Flag to Country | 0 | - | 4.89 | 180,746 |
| History of Russia Quiz | 0 | - | 4.49 | 31,772 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,372 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,313 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,786 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,838 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,415 |
| Germany A-Z | 0 | - | 4.56 | 62,278 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,692 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,267 |
| The Trojan War | 0 | - | 4.83 | 39,399 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,363 |
| History of Italy | 0 | - | 4.55 | 31,800 |
| Italy A-Z | 0 | - | 4.49 | 57,632 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,808 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,982 |
| Roman Emperors | 0 | - | 4.95 | 118,302 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,464 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,756 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,284 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,601 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,962 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,479 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,402 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,758 |
| Monty Python Quotes | 0 | - | 4.88 | 42,303 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,102 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,595 |
