| Name the English Monarchs | 0 | - | 4.91 | 507,520 |
| Monarchies of Europe | 0 | - | 4.90 | 99,062 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,601 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,148 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,051 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,054 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,756 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,319 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,179 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,101 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 128,001 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,263 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 201,019 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,081 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,493 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,398 |
| Geography of the British Empire | 0 | - | 4.48 | 39,887 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,732,054 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,048 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,456 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,438 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,310 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,301 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,025 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,316 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,646 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,556 |
| The Only European Country ... | 0 | - | 4.91 | 219,688 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,880 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,150 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 32,006 |
| Houses of British Monarchs | 0 | - | 4.54 | 66,037 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,872 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,261,998 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,499 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,824 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,574 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,361 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,927 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,795 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,407 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,941 |
| Slavic Countries | 0 | - | 4.96 | 112,535 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,524 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,955 |
| Counties of England | 0 | - | 4.97 | 804,527 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,215 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,836 |
| British History A-Z #1 | 0 | - | 4.45 | 47,352 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,258 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,363 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 241,006 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,939 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,947 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 97,020 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,772 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,927 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,926 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,665 |
| European Countries with One Border | 0 | - | 4.97 | 184,074 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,789 |
| Countries Invaded by the USSR | 0 | - | 4.30 | 94,522 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,610 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,841 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,015 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,908 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,669 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,331 |
| Monarchies of Asia | 0 | - | 4.97 | 71,629 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,373 |
| Communist Countries in History | 0 | - | 4.63 | 498,852 |
| Battle to Country | 0 | - | 4.91 | 54,143 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 46,001 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,067 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,978 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,836 |
| Countries That Border Russia | 0 | - | 4.98 | 465,001 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,971 |
| Countries Bordering France | 0 | - | 4.83 | 405,426 |
| History of France | 0 | - | 4.61 | 57,748 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,671 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,307 |
| English Royal Consorts | 0 | - | 4.38 | 37,574 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,101 |
| Political Movements by Country | 0 | - | 4.46 | 72,844 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,250 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,976 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,205 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,435 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,349 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,504 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,159 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,712 |
| Russia Country Quiz | 0 | - | 4.83 | 115,484 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,849 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,657 |
| Andorra Country Quiz | 0 | - | 4.91 | 32,003 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,025 |
| Germany Country Quiz | 0 | - | 4.82 | 159,106 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,278 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,463 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,261 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,391 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,645 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,067 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,152 |
| UK Immigration by Country | 0 | - | 4.94 | 141,928 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,312 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,287 |
| Medieval English History | 0 | - | 4.53 | 43,694 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,110 |
| Countries of the Popes | 0 | - | 4.78 | 128,922 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,826 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,813 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,598 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,972 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,735 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,517 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,633 |
| National Founders | 0 | - | 4.40 | 84,003 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 95,742 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,169 |
| U.S. States by Governor | 0 | - | 4.43 | 18,125 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,788 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,879 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,809 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,172 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,411 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,959 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,838 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,798 |
| Countries that Border Poland | 0 | - | 4.99 | 173,373 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,364 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,375 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,120 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,097 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,073 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,235 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,070 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,240 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,580 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 99,213 |
| History of Germany | 0 | - | 4.39 | 53,006 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,173 |
| Name that Greek Letter | 0 | - | 4.93 | 325,357 |
| Counties of Ireland | 0 | - | 4.92 | 197,743 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,393 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,723 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,335 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,423 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 76,042 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,707 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,361 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,110 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 36,034 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,443 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,436 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 408,251 |
| Malta Country Quiz | 0 | - | 4.81 | 31,273 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,162 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,505 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.11 | 52,940 |
| The American Civil War | 0 | - | 4.62 | 52,667 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,075 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,726 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,294 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,958 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,534 |
| Random European Flag to Country | 0 | - | 4.90 | 184,517 |
| History of Russia Quiz | 0 | - | 4.47 | 32,030 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,666 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,689 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,772 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,918 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,026 |
| Germany A-Z | 0 | - | 4.56 | 62,912 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,149 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,532 |
| The Trojan War | 0 | - | 4.83 | 40,100 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,288 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 128,009 |
| History of Italy | 0 | - | 4.55 | 32,189 |
| Italy A-Z | 0 | - | 4.49 | 58,876 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,311 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,711 |
| Roman Emperors | 0 | - | 4.95 | 121,474 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,857 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,322 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,313 |
| Countries that Beat Portugal | 0 | - | 4.86 | 60,020 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,475 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,036 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,450 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 69,140 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,220 |
| Monty Python Quotes | 0 | - | 4.89 | 42,632 |
| Embarrassing Chapters in British History | 0 | - | 4.31 | 32,414 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,901 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,169 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,172 |
