| Prime Ministers of the UK | 0 | - | 4.95 | 442,053 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,723,478 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,563 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,563 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 193,664 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,689 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,956 |
| Byzantine History | 0 | - | 4.91 | 29,013 |
| Byzantine Emperors | 0 | - | 4.93 | 14,573 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,708 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,179 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,323 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,887 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,606 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,861 |
| Countries of the Popes | 0 | - | 4.79 | 128,678 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,480 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,267 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,581 |
| Presidential Middle Names | 0 | - | 4.41 | 60,691 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,458 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,659 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,877 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,617 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,831 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,671 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 76,106 |
| Biggest English Cities by Century | 0 | - | 4.91 | 106,974 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,174 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,755 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,131 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,182 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,546 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,277 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,176 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,674 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,772 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,509 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,523 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,407 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,560 |
| Countries of the German Empire | 0 | - | 4.51 | 38,159 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,589 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,079 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,929 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,357 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,758 |
| First Ladies of the United States | 0 | - | 4.28 | 85,925 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.42 | 24,059 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,306 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,451 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,354 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,088 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 58,032 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,707 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,936 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,522 |
| Name that Greek Letter | 0 | - | 4.93 | 324,875 |
| Roman to Greek God | 0 | - | 4.52 | 123,309 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,610 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,826 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,656 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 389,913 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 379,588 |
| Name the English Monarchs | 0 | - | 4.91 | 506,063 |
| Pope Facts | 0 | - | 4.39 | 31,375 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,126 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,448 |
| U.S. President Scramble | 0 | - | 4.40 | 117,429 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,073 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,733 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,923 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,504 |
| The Trojan War | 0 | - | 4.83 | 39,964 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,859 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 88,027 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,393 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,556 |
| Roman Emperors | 0 | - | 4.95 | 121,095 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 238,207 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,745 |
| National Founders | 0 | - | 4.40 | 83,958 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,139 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,860 |
| The George Washington Presidency | 0 | - | 4.03 | 14,604 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,776 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,747 |
| The John Adams Presidency | 0 | - | 4.12 | 8,787 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,981 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,773 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,373 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,753 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,922 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,274 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,354 |
| History of Russia Quiz | 0 | - | 4.47 | 31,998 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,634 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,214 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,826 |
| Ancient Greek Words | 0 | - | 4.93 | 112,387 |
| History of Italy | 0 | - | 4.55 | 32,137 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,811 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,655 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,487 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,810 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,412 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,078 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,555 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.45 | 113,044 |
| Groups of Things - Harry Potter | 0 | - | 4.78 | 282,640 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,545 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,906 |
| Countries of the Japanese Empire | 0 | - | 4.96 | 104,541 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,734 |
| Communist Countries in History | 0 | - | 4.63 | 497,954 |
| History of South Africa | 0 | - | 4.60 | 17,757 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,132 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 635,192 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,601 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,271 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,908 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,331 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,602 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,267 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,275 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,171 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,436 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,865 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,400 |
| History of Austria | 0 | - | 4.70 | 17,968 |
| Geography of the French Empire | 0 | - | 4.45 | 27,209 |
| The French Revolution | 0 | - | 4.47 | 24,136 |
| History of France | 0 | - | 4.61 | 57,564 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,554 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,212 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,032 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,949 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,394 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,615 |
| The Vikings! | 0 | - | 4.46 | 28,400 |
| The Portuguese Empire | 0 | - | 4.58 | 12,099 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,568 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,456 |
| Name the Harry Potter Books | 0 | - | 4.31 | 280,610 |
| Harry Potter Spells | 0 | - | 4.33 | 140,026 |
| Harry Potter Places | 0 | - | 4.35 | 108,692 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 43,200 |
| Harry Potter Creatures | 0 | - | 4.30 | 64,408 |
| Word Scramble - Harry Potter Characters | 0 | - | 4.20 | 61,097 |
| Harry Potter Characters by Screen Time | 0 | - | 4.28 | 148,787 |
| 100 Most Common Words in Beatles Songs | 0 | - | 4.52 | 25,951 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,450 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,198 |
| Geography of the British Empire | 0 | - | 4.48 | 39,840 |
| Medieval English History | 0 | - | 4.53 | 43,641 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,871 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,555 |
| History of Iran | 0 | - | 4.66 | 16,417 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,059 |
| Vietnam War Countries | 0 | - | 4.82 | 94,571 |
| History of China | 0 | - | 4.35 | 57,539 |
| History of India | 0 | - | 4.62 | 21,506 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,640 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,250 |
| Political Movements by Country | 0 | - | 4.46 | 72,749 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,816 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,403 |
| Australian States and Territories | 0 | - | 4.96 | 142,780 |
| Australian Capitals | 0 | - | 4.92 | 62,824 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,480 |
| Australia Map Quiz | 0 | - | 4.95 | 346,038 |
| Australia True or False | 0 | - | 4.87 | 57,122 |
| Flags of North and South America | 0 | - | 4.99 | 376,590 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,929 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,741 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,569 |
| History of Mexico | 0 | - | 4.52 | 15,360 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,020 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,740 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 904,803 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,030,559 |
| North America Map Quiz | 0 | - | 4.98 | 251,794 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,956 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,342 |
| U.S. States by Governor | 0 | - | 4.43 | 18,111 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,591 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,764 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,787 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,641 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,414 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,465 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,769 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,665 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,531 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,550 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,890 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,143 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,644 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,798 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,581 |
