| U.S. Presidents Quiz | 0 | - | 5.00 | 3,691,558 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,503 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,116 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,251 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,195 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,592 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,328 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,673 |
| Presidential Middle Names | 0 | - | 4.41 | 60,158 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,234 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,504 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,383 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,237 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,730 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,954 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,914 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,891 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,132 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,988 |
| Countries of the Popes | 0 | - | 4.79 | 127,973 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,128 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,245 |
| First Ladies of the United States | 0 | - | 4.28 | 85,578 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,211 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,992 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,172 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,944 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,807 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,090 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,082 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,935 |
| U.S. President Scramble | 0 | - | 4.40 | 116,693 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,855 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,911 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,808 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,917 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,563 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,564 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,045 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,198 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,759 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,269 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,002 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 79,354 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,414 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,807 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,712 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,936 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,696 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,897 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,832 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,611 |
| The George Washington Presidency | 0 | - | 4.03 | 14,539 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,718 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,632 |
| The John Adams Presidency | 0 | - | 4.12 | 8,739 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,923 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,733 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,311 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,663 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,842 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,615 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,454 |
| Byzantine History | 0 | - | 4.91 | 28,768 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,994 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,671 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,166 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,364 |
| Name the English Monarchs | 0 | - | 4.91 | 501,894 |
| National Founders | 0 | - | 4.40 | 83,806 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,483 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,177 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,646 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,162 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,435 |
| The Trojan War | 0 | - | 4.83 | 39,672 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,558 |
| Name that Greek Letter | 0 | - | 4.93 | 323,229 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,645 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,677 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,424 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,455 |
| Roman Emperors | 0 | - | 4.95 | 119,750 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 378,601 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 858,226 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,310 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,636 |
| Pope Facts | 0 | - | 4.39 | 31,220 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,382 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,542 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,187 |
| History of Russia Quiz | 0 | - | 4.49 | 31,898 |
| Flags of Countries That Border France | 0 | - | 4.88 | 122,772 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,912 |
| Countries of the German Empire | 0 | - | 4.51 | 37,887 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,836 |
| Ancient Greek Words | 0 | - | 4.93 | 111,437 |
| History of Italy | 0 | - | 4.55 | 31,953 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,634 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,186 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,174 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,816 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,713 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.44 | 112,690 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,868 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,536 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,843 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,792 |
| History of India | 0 | - | 4.62 | 21,408 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,991 |
| History of South Africa | 0 | - | 4.60 | 17,668 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,067 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,771 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,443 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,481 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,811 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,041 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,591 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,378 |
| The Kennedy Family | 0 | - | 3.90 | 14,064 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,183 |
| Europe Map Quiz | 0 | - | 5.00 | 4,758,032 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,084 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,941 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,604 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,386 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,477 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,955 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,659 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,776 |
| History of Austria | 0 | - | 4.70 | 17,847 |
| Geography of the French Empire | 0 | - | 4.45 | 27,039 |
| The French Revolution | 0 | - | 4.46 | 23,918 |
| History of France | 0 | - | 4.59 | 56,895 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,466 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,254 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,406 |
| Mythology A-Z | 0 | - | 4.31 | 37,191 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,764 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,597 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,300 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,662 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,680 |
| The Vikings! | 0 | - | 4.46 | 28,332 |
| The Portuguese Empire | 0 | - | 4.58 | 12,054 |
| Name the Harry Potter Books | 0 | - | 4.31 | 278,826 |
| Harry Potter Spells | 0 | - | 4.33 | 139,586 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 281,487 |
| Harry Potter Places | 0 | - | 4.34 | 108,184 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 43,024 |
| Harry Potter Creatures | 0 | - | 4.29 | 64,012 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,318 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,368 |
| Geography of the British Empire | 0 | - | 4.48 | 39,640 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,243 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,602 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,828 |
| History of Iran | 0 | - | 4.66 | 16,346 |
| Vietnam War Countries | 0 | - | 4.82 | 94,128 |
| History of China | 0 | - | 4.37 | 57,110 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,058 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,666 |
| Communist Countries in History | 0 | - | 4.63 | 495,173 |
| Political Movements by Country | 0 | - | 4.46 | 72,488 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,413 |
| Countries of Africa | 0 | - | 5.00 | 2,532,339 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,763 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,702 |
| African East Coast | 0 | - | 4.96 | 95,913 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,733 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,187 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,552 |
| Australian Capitals | 0 | - | 4.92 | 62,707 |
| Australia Map Quiz | 0 | - | 4.95 | 344,081 |
| History of Mexico | 0 | - | 4.58 | 15,297 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,314 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,163 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,945 |
| U.S. States by Governor | 0 | - | 4.43 | 18,048 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,511 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,678 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,656 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,287 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 626,160 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,098 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,980 |
| The American Civil War | 0 | - | 4.62 | 52,390 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,925 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,605 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,194 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,704 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,045 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,166 |
| Official European Union Languages | 0 | - | 4.97 | 238,262 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,697 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,924 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,966 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,758 |
| The Only European Country ... | 0 | - | 4.91 | 216,215 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,895 |
