| U.S. Presidents by Picture | 0 | - | 4.87 | 426,171 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,371 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,214 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,303 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,692,692 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,555 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,968 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,905 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,169 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,466 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,134 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,708 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,811 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,861 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,919 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,930 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,676 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,428 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 281,537 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,735 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,303 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,837 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,783 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,934 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,198 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,049 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 80,186 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,484 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,847 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,742 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,910 |
| Byzantine History | 0 | - | 4.91 | 28,787 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,416 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,027 |
| Countries of the Popes | 0 | - | 4.79 | 127,996 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,845 |
| U.S. President Scramble | 0 | - | 4.40 | 116,708 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,655 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,282 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,784 |
| The Trojan War | 0 | - | 4.83 | 39,680 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,738 |
| Name that Greek Letter | 0 | - | 4.93 | 323,268 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,682 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,477 |
| Roman Emperors | 0 | - | 4.95 | 119,809 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,023 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,727 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,191 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,159 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 378,632 |
| Name the English Monarchs | 0 | - | 4.91 | 502,056 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,281 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,061 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,668 |
| National Founders | 0 | - | 4.40 | 83,813 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,487 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,604 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,360 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,687 |
| Presidential Middle Names | 0 | - | 4.41 | 60,172 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,181 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,251 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,524 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,961 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,656 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,391 |
| U.S. State Flags | 0 | - | 4.89 | 170,072 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,057 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,449 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,301 |
| Ancient Greek Words | 0 | - | 4.93 | 111,468 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,743 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.44 | 112,702 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,394 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,462 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,316 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,067 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,776 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,160 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,247 |
| First Ladies of the United States | 0 | - | 4.28 | 85,592 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,446 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,485 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,813 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,944 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,213 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,007 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,178 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,947 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,382 |
| Random U.S. States on a Map | 0 | - | 4.96 | 625,779 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,813 |
| Europe Map Quiz | 0 | - | 5.00 | 4,758,922 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,182 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,948 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,060 |
| History of Russia Quiz | 0 | - | 4.47 | 31,902 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,969 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,463 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,891 |
| Roman to Greek God | 0 | - | 4.52 | 122,727 |
| History of Italy | 0 | - | 4.55 | 31,959 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,064 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,638 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,199 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,831 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 387,786 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,377 |
| Name the Harry Potter Books | 0 | - | 4.31 | 278,870 |
| Harry Potter Spells | 0 | - | 4.33 | 139,594 |
| Harry Potter Places | 0 | - | 4.34 | 108,208 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 43,030 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 393,542 |
| Harry Potter Creatures | 0 | - | 4.29 | 64,023 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,773 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,721 |
| Pope Facts | 0 | - | 4.39 | 31,222 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 118,948 |
| Communist Countries in History | 0 | - | 4.63 | 495,271 |
| History of India | 0 | - | 4.62 | 21,410 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,419 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,279 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,025 |
| History of South Africa | 0 | - | 4.60 | 17,676 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,421 |
| Australian Capitals | 0 | - | 4.92 | 62,713 |
| History of Mexico | 0 | - | 4.58 | 15,301 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,600 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,951 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,516 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,308 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,618 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,720 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,639 |
| The John Adams Presidency | 0 | - | 4.12 | 8,741 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,736 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,846 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,550 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,998 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,883 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 302,204 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,060 |
| Official European Union Languages | 0 | - | 4.97 | 238,320 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,730 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,855 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,724 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,404 |
| History of Austria | 0 | - | 4.70 | 17,850 |
| Geography of the French Empire | 0 | - | 4.45 | 27,042 |
| The French Revolution | 0 | - | 4.46 | 23,922 |
| History of France | 0 | - | 4.59 | 56,917 |
| French History Multiple Choice | 0 | - | 4.55 | 33,016 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,459 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,965 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,894 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,570 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,634 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,706 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,286 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,718 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,879 |
| Roman Names for Places | 0 | - | 4.62 | 58,232 |
| History of The Netherlands | 0 | - | 4.46 | 17,425 |
| The Vikings! | 0 | - | 4.46 | 28,334 |
| The Portuguese Empire | 0 | - | 4.58 | 12,057 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,141 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,860 |
| Word Scramble - Harry Potter Characters | 0 | - | 4.20 | 60,823 |
| Harry Potter Characters by Screen Time | 0 | - | 4.27 | 148,091 |
| 100 Most Common Words in Beatles Songs | 0 | - | 4.52 | 25,497 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,320 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,393 |
| Geography of the British Empire | 0 | - | 4.48 | 39,646 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,771 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,621 |
| Medieval English History | 0 | - | 4.53 | 43,489 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,121 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,931 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,583 |
| Asia Map Quiz | 0 | - | 4.99 | 915,663 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,864 |
| History of Iran | 0 | - | 4.66 | 16,348 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,115 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,933 |
| Chinese Inventions | 0 | - | 4.30 | 33,792 |
| History of China | 0 | - | 4.37 | 57,128 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,065 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,649 |
| Countries by Founding Story | 0 | - | 4.95 | 77,127 |
| Independence from Whom | 0 | - | 4.99 | 211,487 |
| Political Movements by Country | 0 | - | 4.46 | 72,497 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,835 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,421 |
| Name a Valid Answer - British History | 0 | - | 4.57 | 15,145 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,263 |
| States of India | 0 | - | 4.95 | 192,967 |
| The Life of Gandhi | 0 | - | 4.37 | 13,051 |
| Countries of Africa | 0 | - | 5.00 | 2,533,252 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,935 |
