| Name the English Monarchs | 0 | - | 4.91 | 501,941 |
| Monarchies of Europe | 0 | - | 4.90 | 98,020 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,013 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 79,707 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,434 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,815 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,720 |
| Europe Map Quiz | 0 | - | 5.00 | 4,758,312 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,834 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,010 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,871 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,942 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,172 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,377 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,318 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,375 |
| Geography of the British Empire | 0 | - | 4.48 | 39,641 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,691,960 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,626 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,576 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,751 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,906 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,272 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,457 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,723 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,176 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,984 |
| The Only European Country ... | 0 | - | 4.91 | 216,242 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,910 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,819 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,759 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,615 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,314 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,195 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,241,624 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,068 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,525 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,065 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,373 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,047 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,925 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,115 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,915 |
| Slavic Countries | 0 | - | 4.96 | 111,551 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,921 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,179 |
| Counties of England | 0 | - | 4.97 | 795,497 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,721 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,742 |
| British History A-Z #1 | 0 | - | 4.45 | 46,435 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,139 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,278 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,132 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,268 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,738 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,357 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,075 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,004 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,610 |
| European Countries with One Border | 0 | - | 4.97 | 182,609 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,427 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,961 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,794 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,257 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,673 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,192 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,911 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,149 |
| Monarchies of Asia | 0 | - | 4.97 | 71,022 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,810 |
| Communist Countries in History | 0 | - | 4.63 | 495,202 |
| Battle to Country | 0 | - | 4.91 | 53,223 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,519 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,202 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,438 |
| Countries That Border Russia | 0 | - | 4.98 | 461,360 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,778 |
| Countries Bordering France | 0 | - | 4.83 | 402,136 |
| History of France | 0 | - | 4.59 | 56,904 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,255 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,806 |
| English Royal Consorts | 0 | - | 4.37 | 37,336 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,770 |
| Political Movements by Country | 0 | - | 4.46 | 72,491 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,708 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,472 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,209 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,898 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,046 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,948 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,872 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,872 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,398 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,488 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,093 |
| Russia Country Quiz | 0 | - | 4.85 | 114,361 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,281 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,314 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,644 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,566 |
| Germany Country Quiz | 0 | - | 4.82 | 157,695 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,986 |
| Italy Country Quiz | 0 | - | 4.82 | 123,286 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,196 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,880 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,281 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,792 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,486 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,832 |
| UK Immigration by Country | 0 | - | 4.94 | 140,766 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,599 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,172 |
| Medieval English History | 0 | - | 4.53 | 43,485 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,001 |
| Countries of the Popes | 0 | - | 4.79 | 127,976 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,910 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 133,419 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,842 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,665 |
| National Founders | 0 | - | 4.40 | 83,809 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,196 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,696 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,067 |
| U.S. States by Governor | 0 | - | 4.43 | 18,053 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,679 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,775 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,656 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,108 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,072 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,471 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,320 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,201 |
| Countries that Border Poland | 0 | - | 4.99 | 172,144 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,773 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,474 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,135 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,824 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,759 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,314 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,232 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,818 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,124 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,343 |
| History of Germany | 0 | - | 4.39 | 52,793 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,600 |
| Name that Greek Letter | 0 | - | 4.93 | 323,244 |
| Counties of Ireland | 0 | - | 4.92 | 194,918 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,796 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,864 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,139 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,781 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,989 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,399 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,116 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,931 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,820 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,582 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,754 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 400,708 |
| Malta Country Quiz | 0 | - | 4.81 | 31,023 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,929 |
| Hindu Countries | 0 | - | 4.86 | 50,064 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,004 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,386 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,336 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,015 |
| The American Civil War | 0 | - | 4.62 | 52,392 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,552 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,491 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,855 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,062 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,634 |
| Random European Flag to Country | 0 | - | 4.89 | 182,148 |
| History of Russia Quiz | 0 | - | 4.49 | 31,899 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,250 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,489 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,526 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,333 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,588 |
| Germany A-Z | 0 | - | 4.56 | 62,563 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,388 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,198 |
| The Trojan War | 0 | - | 4.83 | 39,672 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,651 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,708 |
| History of Italy | 0 | - | 4.55 | 31,955 |
| Italy A-Z | 0 | - | 4.49 | 58,216 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,370 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,459 |
| Roman Emperors | 0 | - | 4.95 | 119,773 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,636 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,462 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,702 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,204 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,195 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,755 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,832 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,450 |
| Monty Python Quotes | 0 | - | 4.88 | 42,447 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,236 |
