| Prime Ministers of the UK | 0 | - | 4.95 | 442,476 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,727,001 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,915 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,575 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,849 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,926 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,987 |
| Byzantine History | 0 | - | 4.91 | 29,027 |
| Byzantine Emperors | 0 | - | 4.93 | 14,610 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,783 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,205 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,597 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,944 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,758 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,961 |
| Countries of the Popes | 0 | - | 4.79 | 128,763 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,578 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,368 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,664 |
| Presidential Middle Names | 0 | - | 4.41 | 60,746 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,670 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,705 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,907 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,640 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,886 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,763 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 76,162 |
| Biggest English Cities by Century | 0 | - | 4.91 | 107,023 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,232 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,846 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,247 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,214 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,607 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,415 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,563 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,831 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,883 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,616 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,586 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,466 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,847 |
| Countries of the German Empire | 0 | - | 4.51 | 38,252 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,661 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,109 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,045 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,369 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,779 |
| First Ladies of the United States | 0 | - | 4.28 | 85,991 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.42 | 24,074 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,322 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,500 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,367 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,103 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 59,181 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,820 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,950 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,157 |
| Name that Greek Letter | 0 | - | 4.93 | 325,049 |
| Roman to Greek God | 0 | - | 4.52 | 123,363 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,689 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,903 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,826 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 390,204 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 379,715 |
| Name the English Monarchs | 0 | - | 4.91 | 506,692 |
| Pope Facts | 0 | - | 4.39 | 31,397 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,133 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,568 |
| U.S. President Scramble | 0 | - | 4.40 | 117,488 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,094 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,759 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,940 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,875 |
| The Trojan War | 0 | - | 4.83 | 40,002 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,003 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 88,055 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,615 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,608 |
| Roman Emperors | 0 | - | 4.95 | 121,258 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,416 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,756 |
| National Founders | 0 | - | 4.40 | 83,979 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,148 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,866 |
| The George Washington Presidency | 0 | - | 4.03 | 14,615 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,783 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,757 |
| The John Adams Presidency | 0 | - | 4.12 | 8,794 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,993 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,778 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,385 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,765 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,933 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,470 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,541 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,660 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,420 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 112,758 |
| Ancient Greek Words | 0 | - | 4.93 | 112,516 |
| History of Italy | 0 | - | 4.55 | 32,156 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,835 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,869 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,525 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,827 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,430 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,103 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,583 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.45 | 113,090 |
| Groups of Things - Harry Potter | 0 | - | 4.78 | 282,783 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,597 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,916 |
| Countries of the Japanese Empire | 0 | - | 4.96 | 104,623 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,779 |
| Communist Countries in History | 0 | - | 4.63 | 498,321 |
| History of South Africa | 0 | - | 4.60 | 17,766 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,153 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 636,066 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,613 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,286 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,931 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,353 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,662 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,266 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,616 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,194 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,886 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,910 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,440 |
| History of Austria | 0 | - | 4.70 | 17,977 |
| Geography of the French Empire | 0 | - | 4.45 | 27,220 |
| The French Revolution | 0 | - | 4.47 | 24,149 |
| History of France | 0 | - | 4.61 | 57,642 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,561 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,246 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,051 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,978 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,403 |
| Countries Italy Declared War On | 0 | - | 4.75 | 44,949 |
| The Vikings! | 0 | - | 4.46 | 28,409 |
| The Portuguese Empire | 0 | - | 4.58 | 12,107 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,589 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,526 |
| Name the Harry Potter Books | 0 | - | 4.31 | 280,819 |
| Harry Potter Spells | 0 | - | 4.30 | 140,084 |
| Harry Potter Places | 0 | - | 4.35 | 108,768 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 43,225 |
| Harry Potter Creatures | 0 | - | 4.30 | 64,465 |
| Word Scramble - Harry Potter Characters | 0 | - | 4.20 | 61,138 |
| Harry Potter Characters by Screen Time | 0 | - | 4.28 | 148,872 |
| 100 Most Common Words in Beatles Songs | 0 | - | 4.52 | 25,991 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,467 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,280 |
| Geography of the British Empire | 0 | - | 4.48 | 39,849 |
| Medieval English History | 0 | - | 4.53 | 43,661 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,874 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,776 |
| History of Iran | 0 | - | 4.66 | 16,425 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,072 |
| Vietnam War Countries | 0 | - | 4.82 | 94,665 |
| History of China | 0 | - | 4.35 | 57,589 |
| History of India | 0 | - | 4.62 | 21,518 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,665 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,455 |
| Political Movements by Country | 0 | - | 4.46 | 72,788 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,635 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,486 |
| Australian States and Territories | 0 | - | 4.96 | 142,893 |
| Australian Capitals | 0 | - | 4.92 | 62,837 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,507 |
| Australia Map Quiz | 0 | - | 4.95 | 346,228 |
| Australia True or False | 0 | - | 4.87 | 57,160 |
| Flags of North and South America | 0 | - | 4.99 | 377,237 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,013 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,871 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,692 |
| History of Mexico | 0 | - | 4.52 | 15,367 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,966 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,762 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,089 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,031,948 |
| North America Map Quiz | 0 | - | 4.98 | 252,211 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,991 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,864 |
| U.S. States by Governor | 0 | - | 4.43 | 18,115 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,602 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,768 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,823 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,696 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,453 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,479 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,781 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,717 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,546 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,558 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,896 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,147 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,649 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,820 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,621 |
