| Name the English Monarchs | 0 | - | 4.91 | 506,248 |
| Monarchies of Europe | 0 | - | 4.90 | 98,843 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,332 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,300 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,727 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,814 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,545 |
| Europe Map Quiz | 0 | - | 5.00 | 4,787,095 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,090 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,854 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,765 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,178 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,658 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,707 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,456 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,229 |
| Geography of the British Empire | 0 | - | 4.48 | 39,844 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,724,886 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,745 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,163 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,287 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,041 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,188 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,909 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,728 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,179 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,057 |
| The Only European Country ... | 0 | - | 4.91 | 218,915 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,465 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,090 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,957 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,942 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,766 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,333 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,257,444 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,414 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,480 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,022 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,682 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,749 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,342 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,151 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,764 |
| Slavic Countries | 0 | - | 4.96 | 112,343 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,429 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,781 |
| Counties of England | 0 | - | 4.97 | 802,674 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,901 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,827 |
| British History A-Z #1 | 0 | - | 4.45 | 47,243 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,240 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,805 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,435 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,540 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,454 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,456 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,535 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,746 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,454 |
| European Countries with One Border | 0 | - | 4.97 | 183,759 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,495 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,412 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,453 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,605 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,769 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,377 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,505 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,994 |
| Monarchies of Asia | 0 | - | 4.97 | 71,490 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,276 |
| Communist Countries in History | 0 | - | 4.63 | 498,100 |
| Battle to Country | 0 | - | 4.91 | 53,936 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,905 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 193,748 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,851 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,742 |
| Countries That Border Russia | 0 | - | 4.98 | 464,435 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,926 |
| Countries Bordering France | 0 | - | 4.83 | 404,834 |
| History of France | 0 | - | 4.61 | 57,592 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,600 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,779 |
| English Royal Consorts | 0 | - | 4.38 | 37,519 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,020 |
| Political Movements by Country | 0 | - | 4.46 | 72,764 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,190 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,820 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,141 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,763 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,860 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,520 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,850 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,546 |
| Russia Country Quiz | 0 | - | 4.83 | 115,290 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,725 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,574 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,926 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,770 |
| Germany Country Quiz | 0 | - | 4.82 | 158,806 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,054 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,199 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,020 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,639 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,465 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,837 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,804 |
| UK Immigration by Country | 0 | - | 4.94 | 141,683 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,957 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,263 |
| Medieval English History | 0 | - | 4.53 | 43,650 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,895 |
| Countries of the Popes | 0 | - | 4.79 | 128,716 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,729 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,207 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,315 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,680 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,493 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,308 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,387 |
| National Founders | 0 | - | 4.40 | 83,973 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 94,983 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,143 |
| U.S. States by Governor | 0 | - | 4.43 | 18,111 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,764 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,861 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,776 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,686 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,404 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,341 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,807 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,713 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,665 |
| Countries that Border Poland | 0 | - | 4.99 | 173,143 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,240 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,778 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,996 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,035 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,022 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,066 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,926 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,140 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,460 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,564 |
| History of Germany | 0 | - | 4.39 | 52,968 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,723 |
| Name that Greek Letter | 0 | - | 4.93 | 324,927 |
| Counties of Ireland | 0 | - | 4.92 | 197,244 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,240 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,346 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,310 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,081 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,821 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,330 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,312 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,086 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,981 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,047 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,289 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 406,431 |
| Malta Country Quiz | 0 | - | 4.81 | 31,229 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,976 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,469 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,214 |
| The American Civil War | 0 | - | 4.62 | 52,621 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,825 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,457 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,188 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,774 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,592 |
| Random European Flag to Country | 0 | - | 4.90 | 184,154 |
| History of Russia Quiz | 0 | - | 4.47 | 32,001 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,421 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,640 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,572 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,800 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,659 |
| Germany A-Z | 0 | - | 4.56 | 62,855 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,993 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,282 |
| The Trojan War | 0 | - | 4.83 | 39,976 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,909 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,490 |
| History of Italy | 0 | - | 4.55 | 32,142 |
| Italy A-Z | 0 | - | 4.49 | 58,737 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,159 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,575 |
| Roman Emperors | 0 | - | 4.95 | 121,161 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,815 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,126 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,216 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,863 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,419 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,978 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,332 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,060 |
| Monty Python Quotes | 0 | - | 4.89 | 42,605 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,370 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,867 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,069 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,037 |
