| Countries of the Soviet Union | 0 | - | 4.98 | 195,644 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,618 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,951 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,450 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,553 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,604 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,198 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,777 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,472 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,753 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,905 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,943 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,202 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,728,436 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,873 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,921 |
| Name the English Monarchs | 0 | - | 4.91 | 506,999 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,653 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,738 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,339 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,363 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,173 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,675 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,654 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,213 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,696 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,963 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,071 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,140 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,877 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,013 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,091 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,750 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,917 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,034 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,259,820 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,415 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,540 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,334 |
| The Only European Country ... | 0 | - | 4.91 | 219,326 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,691 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 84,122 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,467 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,187 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,560 |
| Counties of England | 0 | - | 4.97 | 803,598 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,120 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,893 |
| The American Revolution | 0 | - | 4.52 | 54,371 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,679 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,294 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,919 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,045 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,639 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,856 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,714 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,214 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,554 |
| Monarchies of Europe | 0 | - | 4.90 | 98,964 |
| European Countries with One Border | 0 | - | 4.97 | 183,926 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,640 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,622 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,279 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,833 |
| Slavic Countries | 0 | - | 4.96 | 112,445 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,524 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,740 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,906 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,640 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,488 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,634 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,576 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,155 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,478 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,320 |
| Geography of the British Empire | 0 | - | 4.48 | 39,860 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,882 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,067 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,025 |
| Countries of the Popes | 0 | - | 4.79 | 128,814 |
| The Vietnam War | 0 | - | 4.44 | 35,670 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,691 |
| Political Movements by Country | 0 | - | 4.46 | 72,794 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,164 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,152 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,130 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,605 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,869 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,879 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,994 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,884 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,384 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,877 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,780 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,996 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,012 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,626 |
| Countries that Border Poland | 0 | - | 4.99 | 173,260 |
| Russia Country Quiz | 0 | - | 4.83 | 115,381 |
| Countries That Border Russia | 0 | - | 4.98 | 464,691 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,314 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,055 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,796 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,047 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,611 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,146 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,968 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,988 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,900 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,189 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,527 |
| Countries Bordering France | 0 | - | 4.83 | 405,129 |
| Germany Country Quiz | 0 | - | 4.82 | 158,951 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,150 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,043 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,881 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,427 |
| Name that Greek Letter | 0 | - | 4.93 | 325,130 |
| Counties of Ireland | 0 | - | 4.92 | 197,474 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,329 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,138 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,310 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,512 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,550 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,959 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,016 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,323 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,249 |
| UK Immigration by Country | 0 | - | 4.94 | 141,818 |
| Arthurian Legend | 0 | - | 4.33 | 25,181 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,144 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 75,938 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,523 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,991 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,989 |
| Medieval English History | 0 | - | 4.53 | 43,671 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,339 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,100 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,105 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,352 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 407,502 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,067 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,547 |
| The Iraq War | 0 | - | 4.47 | 15,710 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,135 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,630 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,156 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,084 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,425 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,061 |
| Arms Exports - United States | 0 | - | 4.77 | 62,767 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,607 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,402 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,703 |
| Presidential Middle Names | 0 | - | 4.42 | 60,771 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,719 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,921 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,644 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,353 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,779 |
| Random European Flag to Country | 0 | - | 4.90 | 184,346 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,537 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,667 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,677 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,854 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,072 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,045 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,892 |
| Germany A-Z | 0 | - | 4.56 | 62,882 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,417 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,081 |
| The Trojan War | 0 | - | 4.83 | 40,022 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,076 |
| Italy A-Z | 0 | - | 4.49 | 58,799 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,582 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,236 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,643 |
| Roman Emperors | 0 | - | 4.95 | 121,325 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,220 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,263 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,933 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,394 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,143 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,036 |
| Monty Python Quotes | 0 | - | 4.89 | 42,618 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,823 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,831 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,391 |
| British History A-Z #1 | 0 | - | 4.45 | 47,294 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,247 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,124 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,104 |
| History of Scotland | 0 | - | 4.51 | 21,181 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,812 |
| Top 4 in English Football, 1888–2026 | 0 | - | 4.92 | 143,614 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 872,274 |
| Scotland A-Z | 0 | - | 4.73 | 41,479 |
| Malta Country Quiz | 0 | - | 4.81 | 31,247 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,243 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,547 |
