| Countries of the Soviet Union | 0 | - | 4.98 | 195,647 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,620 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,952 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,458 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,557 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,610 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,199 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,796 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,475 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,776 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,911 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,947 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,203 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,728,645 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,879 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,933 |
| Name the English Monarchs | 0 | - | 4.91 | 507,018 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,655 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,936 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,344 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,368 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,186 |
| 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 | 428,711 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,964 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,073 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,271 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,879 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,015 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,101 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,765 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,925 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,049 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,259,932 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,430 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,585 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,356 |
| The Only European Country ... | 0 | - | 4.91 | 219,345 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,705 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 84,129 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,468 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,190 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,563 |
| Counties of England | 0 | - | 4.97 | 803,646 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,120 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,900 |
| The American Revolution | 0 | - | 4.52 | 54,374 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,688 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,341 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,924 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,064 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,646 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,860 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,725 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,216 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,559 |
| Monarchies of Europe | 0 | - | 4.90 | 98,970 |
| European Countries with One Border | 0 | - | 4.97 | 183,935 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,650 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,629 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,287 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,847 |
| Slavic Countries | 0 | - | 4.96 | 112,450 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,530 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,743 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,920 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,642 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,490 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,651 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,578 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,166 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,478 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,324 |
| Geography of the British Empire | 0 | - | 4.48 | 39,862 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,882 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,070 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,028 |
| Countries of the Popes | 0 | - | 4.79 | 128,819 |
| The Vietnam War | 0 | - | 4.44 | 35,671 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,695 |
| Political Movements by Country | 0 | - | 4.46 | 72,797 |
| 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 | 73,131 |
| 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 | 191,890 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,999 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,887 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,385 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,885 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,784 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,022 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,020 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,632 |
| Countries that Border Poland | 0 | - | 4.99 | 173,270 |
| Russia Country Quiz | 0 | - | 4.83 | 115,384 |
| Countries That Border Russia | 0 | - | 4.98 | 464,703 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,317 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,074 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,799 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,052 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,612 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,153 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,971 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,994 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,905 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,195 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,531 |
| Countries Bordering France | 0 | - | 4.83 | 405,147 |
| Germany Country Quiz | 0 | - | 4.82 | 158,955 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,155 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,053 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,900 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,460 |
| Name that Greek Letter | 0 | - | 4.93 | 325,137 |
| Counties of Ireland | 0 | - | 4.92 | 197,482 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,333 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,140 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,316 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,527 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,551 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,962 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,025 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,325 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,261 |
| UK Immigration by Country | 0 | - | 4.94 | 141,824 |
| Arthurian Legend | 0 | - | 4.33 | 25,182 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,153 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 75,946 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,533 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,991 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,991 |
| Medieval English History | 0 | - | 4.53 | 43,671 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,341 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,100 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,107 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,356 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 407,548 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,071 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,561 |
| 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 | 107,633 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,162 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,086 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,428 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,061 |
| Arms Exports - United States | 0 | - | 4.77 | 62,770 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,611 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,409 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,704 |
| Presidential Middle Names | 0 | - | 4.42 | 60,774 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,720 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,922 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,645 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,353 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,780 |
| Random European Flag to Country | 0 | - | 4.90 | 184,353 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,546 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,670 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,688 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,860 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,073 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,046 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,900 |
| Germany A-Z | 0 | - | 4.56 | 62,882 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,423 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,114 |
| The Trojan War | 0 | - | 4.83 | 40,024 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,082 |
| Italy A-Z | 0 | - | 4.49 | 58,804 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,583 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,239 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,645 |
| Roman Emperors | 0 | - | 4.95 | 121,333 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,224 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,266 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,938 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,395 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,148 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,039 |
| Monty Python Quotes | 0 | - | 4.89 | 42,618 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,829 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,831 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,392 |
| British History A-Z #1 | 0 | - | 4.45 | 47,295 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,247 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,125 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,107 |
| History of Scotland | 0 | - | 4.51 | 21,181 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,814 |
| Top 4 in English Football, 1888–2026 | 0 | - | 4.92 | 143,627 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 872,339 |
| Scotland A-Z | 0 | - | 4.73 | 41,479 |
| Malta Country Quiz | 0 | - | 4.81 | 31,248 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,248 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,547 |
