| Prime Ministers of the UK | 0 | - | 4.95 | 440,612 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,711,820 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,368 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,514 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,785 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,953 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,843 |
| Byzantine History | 0 | - | 4.91 | 28,940 |
| Byzantine Emperors | 0 | - | 4.92 | 14,415 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,469 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,081 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,311 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,723 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,118 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,547 |
| Countries of the Popes | 0 | - | 4.79 | 128,420 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,006 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,818 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,211 |
| Presidential Middle Names | 0 | - | 4.41 | 60,469 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,524 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,489 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,700 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,513 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,545 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,298 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,871 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,532 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,014 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,899 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,611 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,078 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,270 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,859 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,907 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,229 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,428 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,230 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,262 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,250 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,090 |
| Countries of the German Empire | 0 | - | 4.51 | 38,054 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,335 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,971 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,598 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,298 |
| First Ladies of the United States | 0 | - | 4.28 | 85,783 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,990 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,255 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,302 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,252 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,016 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,357 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,865 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,604 |
| Name that Greek Letter | 0 | - | 4.93 | 324,333 |
| Roman to Greek God | 0 | - | 4.52 | 123,082 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,583 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,153 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 388,970 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 379,240 |
| Name the English Monarchs | 0 | - | 4.91 | 504,494 |
| Pope Facts | 0 | - | 4.39 | 31,314 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,105 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,167 |
| U.S. President Scramble | 0 | - | 4.40 | 117,171 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,971 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,630 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,879 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,249 |
| The Trojan War | 0 | - | 4.83 | 39,846 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,400 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,910 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,720 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,998 |
| Roman Emperors | 0 | - | 4.95 | 120,538 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,830 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,716 |
| National Founders | 0 | - | 4.40 | 83,898 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,118 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,838 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,688 |
| The George Washington Presidency | 0 | - | 4.03 | 14,572 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,754 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,687 |
| The John Adams Presidency | 0 | - | 4.12 | 8,765 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,952 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,751 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,339 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,717 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,874 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,861 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,971 |
| History of Russia Quiz | 0 | - | 4.47 | 31,970 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,580 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,740 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,727 |
| Ancient Greek Words | 0 | - | 4.93 | 112,039 |
| History of Italy | 0 | - | 4.55 | 32,084 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,755 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,308 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,323 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,745 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,323 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,991 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,483 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.45 | 112,916 |
| Groups of Things - Harry Potter | 0 | - | 4.80 | 282,201 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,334 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,876 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,410 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,585 |
| Communist Countries in History | 0 | - | 4.63 | 496,868 |
| History of South Africa | 0 | - | 4.60 | 17,728 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,058 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 630,958 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,553 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,220 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,785 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,241 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,446 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,435 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,938 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,078 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,980 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,706 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,206 |
| History of Austria | 0 | - | 4.70 | 17,923 |
| Geography of the French Empire | 0 | - | 4.45 | 27,168 |
| The French Revolution | 0 | - | 4.47 | 24,079 |
| History of France | 0 | - | 4.61 | 57,347 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,114 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,869 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,345 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,464 |
| The Vikings! | 0 | - | 4.46 | 28,375 |
| The Portuguese Empire | 0 | - | 4.58 | 12,087 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,524 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,253 |
| Name the Harry Potter Books | 0 | - | 4.31 | 279,980 |
| Harry Potter Spells | 0 | - | 4.33 | 139,877 |
| Harry Potter Places | 0 | - | 4.34 | 108,513 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 43,139 |
| Harry Potter Creatures | 0 | - | 4.30 | 64,257 |
| Word Scramble - Harry Potter Characters | 0 | - | 4.20 | 60,996 |
| Harry Potter Characters by Screen Time | 0 | - | 4.28 | 148,507 |
| 100 Most Common Words in Beatles Songs | 0 | - | 4.52 | 25,768 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,424 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,973 |
| Geography of the British Empire | 0 | - | 4.48 | 39,771 |
| Medieval English History | 0 | - | 4.53 | 43,591 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,857 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,930 |
| History of Iran | 0 | - | 4.66 | 16,390 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,012 |
| Vietnam War Countries | 0 | - | 4.82 | 94,407 |
| History of China | 0 | - | 4.37 | 57,374 |
| History of India | 0 | - | 4.62 | 21,468 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,544 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,753 |
| Political Movements by Country | 0 | - | 4.46 | 72,653 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,791 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,037 |
| Australian States and Territories | 0 | - | 4.96 | 142,363 |
| Australian Capitals | 0 | - | 4.92 | 62,776 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,388 |
| Australia Map Quiz | 0 | - | 4.95 | 345,401 |
| Australia True or False | 0 | - | 4.87 | 56,995 |
| Flags of North and South America | 0 | - | 4.99 | 374,842 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,756 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,471 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,215 |
| History of Mexico | 0 | - | 4.58 | 15,341 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,441 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,657 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,179 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,864 |
| North America Map Quiz | 0 | - | 4.98 | 249,799 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,837 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,848 |
| U.S. States by Governor | 0 | - | 4.43 | 18,084 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,566 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,723 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,653 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,488 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,315 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,408 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,720 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,506 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,490 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,520 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,854 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,125 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,620 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,670 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,384 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,437 |
| The Kennedy Family | 0 | - | 3.90 | 14,084 |
| American Founding Fathers | 0 | - | 4.42 | 23,248 |
