| Countries of the Soviet Union | 0 | - | 4.98 | 193,837 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,433 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,642 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,637 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,237 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,678 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,040 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,468 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,740 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,354 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,654,355 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,151 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,259 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,110 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,278 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,763 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,288 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,777 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,505 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,514 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,157 |
| Countries of the Popes | 0 | - | 4.79 | 127,218 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,260 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,739 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,562 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,617 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,915 |
| National Founders | 0 | - | 4.40 | 83,649 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,854 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,675 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,433 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 70,177 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,313 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,998 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,574 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,861 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,896 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,862 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,363 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,327 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,737 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,882 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,670 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,948 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,423 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,416 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,112 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,020 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,665 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,952 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,861 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,155 |
| UK Immigration by Country | 0 | - | 4.94 | 139,639 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,144 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,086 |
| Name the English Monarchs | 0 | - | 4.92 | 497,893 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,541 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,264 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,248 |
| Political Movements by Country | 0 | - | 4.46 | 72,260 |
| Hindu Countries | 0 | - | 4.85 | 49,580 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,176 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,955 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,376 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,254 |
| Every European Country Shape | 0 | - | 4.96 | 200,171 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,714 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,197 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,940 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,970 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,020 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,489 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,334 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,548 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,625 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| The Trojan War | 0 | - | 4.83 | 39,428 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,909 |
| Name that Greek Letter | 0 | - | 4.94 | 321,665 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,536 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,046 |
| Roman Emperors | 0 | - | 4.95 | 118,489 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,269 |
| Monty Python Quotes | 0 | - | 4.88 | 42,324 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,289 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,545 |
| Pope Facts | 0 | - | 4.39 | 31,039 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,353 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,976 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,937 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,949 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,499 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,001 |
| Presidential Middle Names | 0 | - | 4.41 | 59,702 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,737 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,367 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,819 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,745 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,171 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,417 |
| The American Revolution | 0 | - | 4.52 | 54,057 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,548 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,506 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,145 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,974 |
| Random European Flag to Country | 0 | - | 4.89 | 180,891 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,144 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,676 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,367 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,125 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,308 |
| Ancient Greek Words | 0 | - | 4.92 | 110,691 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,378 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,542 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,678 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,147 |
| Shakespeare's Plays Quiz | 0 | - | 4.38 | 385,721 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,394 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,118 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,597 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 851,427 |
| Scotland A-Z | 0 | - | 4.73 | 41,044 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,820 |
| The Vietnam War | 0 | - | 4.43 | 35,294 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,680 |
| Flags of WW1 | 0 | - | 4.60 | 37,942 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,945 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,411 |
| American Political Words | 0 | - | 4.39 | 23,341 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,073 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,462 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,807 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,166 |
| First Ladies of the United States | 0 | - | 4.28 | 85,245 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,815 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,111 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,283 |
| U.S. President Scramble | 0 | - | 4.40 | 116,201 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,002 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,833 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,023 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,695 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,686 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,311 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,351 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,152 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,745 |
| Most Forested European Countries | 0 | - | 4.80 | 74,908 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,534 |
| European Cities with the Biggest Economies | 0 | - | 4.62 | 38,184 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,146 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 315,726 |
| History of Russia Quiz | 0 | - | 4.49 | 31,794 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,891 |
| History of France | 0 | - | 4.59 | 56,046 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,931 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,179 |
| Mythology A-Z | 0 | - | 4.31 | 36,998 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,947 |
| History of Italy | 0 | - | 4.55 | 31,814 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,730 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,733 |
| Byzantine History | 0 | - | 4.91 | 28,620 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,472 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,482 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,981 |
| Arthurian Legend | 0 | - | 4.33 | 25,050 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,388 |
| Biggest British Empire Countries | 0 | - | 4.73 | 94,391 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,043 |
| Name the James Bond Movies | 0 | - | 4.56 | 157,436 |
| James Bond Trivia | 0 | - | 4.46 | 39,142 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,174 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,779 |
| Geography of the British Empire | 0 | - | 4.48 | 39,472 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,519 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,034 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,810 |
| The Iraq War | 0 | - | 4.47 | 15,552 |
| Communist Countries in History | 0 | - | 4.63 | 492,512 |
| History of India | 0 | - | 4.61 | 21,284 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,177 |
| Countries of Africa | 0 | - | 5.00 | 2,507,838 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,345 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,292 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,813 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,531 |
| African East Coast | 0 | - | 4.96 | 95,045 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,924 |
| History of South Africa | 0 | - | 4.60 | 17,602 |
| Biggest Trading Partners - South Africa | 0 | - | 4.80 | 40,127 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,299 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,798 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| Australia A-Z | 0 | - | 4.54 | 49,781 |
| Australia Map Quiz | 0 | - | 4.94 | 342,479 |
| Flags of North and South America | 0 | - | 4.99 | 367,213 |
| History of Mexico | 0 | - | 4.58 | 15,230 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,211 |
