| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,616 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,709 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,363 |
| Name the English Monarchs | 0 | - | 4.92 | 497,442 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,488 |
| Monarchies of Europe | 0 | - | 4.90 | 97,225 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,795 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,311 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,261 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,003 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,922 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,482 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,376 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,180 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,040 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,720 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,115 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,123 |
| Communist Countries in History | 0 | - | 4.63 | 492,136 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,137 |
| Europe Map Quiz | 0 | - | 5.00 | 4,727,935 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,058 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,053 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,870 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,165 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,975 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,906 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,257 |
| Countries in World War I | 0 | - | 4.88 | 226,321 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,316 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,370 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,761 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,093 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,363 |
| The Only European Country ... | 0 | - | 4.91 | 213,535 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,345 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,619 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,805 |
| British History A-Z #1 | 0 | - | 4.45 | 45,756 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,257 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,631 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,610 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,461 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,707 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,597 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,207 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,074 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,408 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,195 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,165 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,079 |
| Slavic Countries | 0 | - | 4.96 | 110,779 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 70,130 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,902 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,938 |
| Counties of England | 0 | - | 4.97 | 788,441 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,358 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,539 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,725 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,303 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 90,989 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,645 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,011 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,188 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,716 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,970 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,236 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,680 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,120 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,680 |
| European Countries with One Border | 0 | - | 4.97 | 181,480 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 177,991 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,262 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,929 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,346 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,058 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,614 |
| Russia Country Quiz | 0 | - | 4.85 | 113,570 |
| Russia A-Z | 0 | - | 4.46 | 27,126 |
| Countries That Border Russia | 0 | - | 4.98 | 458,589 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,756 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,798 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,109 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,002 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,015 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,074 |
| Countries Bordering France | 0 | - | 4.85 | 397,038 |
| Germany Country Quiz | 0 | - | 4.82 | 156,415 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,569 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,066 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,745 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,486 |
| Italy Country Quiz | 0 | - | 4.82 | 122,092 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,265 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 150,992 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,913 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,878 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,530 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,684 |
| UK Immigration by Country | 0 | - | 4.94 | 139,503 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 137,992 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,849 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,962 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,154 |
| English Royal Consorts | 0 | - | 4.37 | 37,140 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,709 |
| Geography of the British Empire | 0 | - | 4.48 | 39,463 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,587 |
| Medieval English History | 0 | - | 4.53 | 43,293 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,521 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,973 |
| Countries of the Popes | 0 | - | 4.79 | 127,089 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,456 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,161 |
| Monarchies of Asia | 0 | - | 4.97 | 70,545 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,574 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,456 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,383 |
| Countries in World War II | 0 | - | 4.53 | 903,569 |
| Political Movements by Country | 0 | - | 4.46 | 72,230 |
| Battle to Country | 0 | - | 4.91 | 52,448 |
| Hindu Countries | 0 | - | 4.85 | 49,451 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,132 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,051 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,869 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,663 |
| The American Civil War | 0 | - | 4.62 | 52,100 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,756 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,153 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,782 |
| Countries that Border Poland | 0 | - | 4.99 | 171,231 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,377 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,337 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,314 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,793 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,184 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,618 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,656 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,664 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,416 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,472 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,758 |
| Germany A-Z | 0 | - | 4.56 | 62,279 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,269 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,071 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,281 |
| Name that Greek Letter | 0 | - | 4.94 | 321,455 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,373 |
| Counties of Ireland | 0 | - | 4.92 | 192,829 |
| Italy A-Z | 0 | - | 4.49 | 57,633 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,377 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,810 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,188 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,983 |
| Roman Emperors | 0 | - | 4.95 | 118,315 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,761 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,604 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,004 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,151 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,403 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,163 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,764 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,449 |
| Monty Python Quotes | 0 | - | 4.88 | 42,305 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,596 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,286 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,936 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,816 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,042 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,424 |
| The Reign of Queen Elizabeth II | 0 | - | 4.35 | 35,659 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,808 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,618 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,708 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 396,748 |
| National Founders | 0 | - | 4.40 | 83,622 |
| Important Cities in WWII | 0 | - | 4.42 | 92,827 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,224 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,836 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,959 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,326 |
| U.S. States by Governor | 0 | - | 4.43 | 17,972 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,558 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,140 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,530 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,751 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,855 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,373 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,918 |
| Presidential Middle Names | 0 | - | 4.41 | 59,642 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,678 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,750 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,709 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,145 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,700 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,788 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,565 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,514 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,079 |
