| U.S. Presidents by Picture | 0 | - | 4.87 | 426,182 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,384 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,216 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,309 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,692,868 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,566 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,972 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,906 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,170 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,467 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,139 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,720 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,813 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,862 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,920 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,930 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,685 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,429 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 281,540 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,737 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,306 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,837 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,789 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,938 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,198 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,058 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 80,244 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,489 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,852 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,749 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,911 |
| Byzantine History | 0 | - | 4.91 | 28,790 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,424 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,029 |
| Countries of the Popes | 0 | - | 4.79 | 128,001 |
| 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 | 190,661 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,285 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,785 |
| The Trojan War | 0 | - | 4.83 | 39,680 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,747 |
| Name that Greek Letter | 0 | - | 4.93 | 323,271 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,688 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,478 |
| Roman Emperors | 0 | - | 4.95 | 119,817 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,027 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,730 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,198 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,162 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 378,636 |
| Name the English Monarchs | 0 | - | 4.91 | 502,066 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,284 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,062 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,668 |
| National Founders | 0 | - | 4.40 | 83,815 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,487 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,609 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,363 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,689 |
| Presidential Middle Names | 0 | - | 4.41 | 60,173 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,181 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,255 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,530 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,962 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,657 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,391 |
| U.S. State Flags | 0 | - | 4.89 | 170,077 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,059 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,452 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,313 |
| Ancient Greek Words | 0 | - | 4.93 | 111,471 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,750 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.44 | 112,704 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,395 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,462 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,317 |
| 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 | 136,163 |
| 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 | 31,447 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,486 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,813 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,945 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,214 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,008 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,179 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,948 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,384 |
| Random U.S. States on a Map | 0 | - | 4.96 | 625,795 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,814 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,029 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,188 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,950 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,065 |
| 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 | 48,464 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,895 |
| Roman to Greek God | 0 | - | 4.52 | 122,729 |
| History of Italy | 0 | - | 4.55 | 31,959 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,066 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,638 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,200 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,831 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 387,792 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,377 |
| Name the Harry Potter Books | 0 | - | 4.31 | 278,876 |
| Harry Potter Spells | 0 | - | 4.33 | 139,599 |
| Harry Potter Places | 0 | - | 4.34 | 108,208 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 43,031 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 393,556 |
| Harry Potter Creatures | 0 | - | 4.29 | 64,027 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,775 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,722 |
| 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 | 495,275 |
| 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 | 2,116,325 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,029 |
| History of South Africa | 0 | - | 4.60 | 17,676 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,442 |
| Australian Capitals | 0 | - | 4.92 | 62,713 |
| History of Mexico | 0 | - | 4.58 | 15,301 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,745 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,952 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,516 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,311 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,619 |
| 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 | 8,742 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,737 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,847 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,551 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,998 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,886 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 302,218 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,063 |
| Official European Union Languages | 0 | - | 4.97 | 238,325 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,735 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,864 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,739 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,405 |
| History of Austria | 0 | - | 4.70 | 17,851 |
| Geography of the French Empire | 0 | - | 4.45 | 27,042 |
| The French Revolution | 0 | - | 4.46 | 23,922 |
| History of France | 0 | - | 4.59 | 56,918 |
| French History Multiple Choice | 0 | - | 4.55 | 33,017 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,468 |
| 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 | 73,574 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,636 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,708 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,287 |
| 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 | 58,235 |
| History of The Netherlands | 0 | - | 4.46 | 17,426 |
| 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 | 99,862 |
| Word Scramble - Harry Potter Characters | 0 | - | 4.20 | 60,826 |
| Harry Potter Characters by Screen Time | 0 | - | 4.27 | 148,093 |
| 100 Most Common Words in Beatles Songs | 0 | - | 4.52 | 25,498 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,321 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,394 |
| Geography of the British Empire | 0 | - | 4.48 | 39,648 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,772 |
| 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 | 37,932 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,612 |
| Asia Map Quiz | 0 | - | 4.99 | 915,699 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,867 |
| History of Iran | 0 | - | 4.66 | 16,349 |
| 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 | 94,068 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,653 |
| Countries by Founding Story | 0 | - | 4.95 | 77,129 |
| Independence from Whom | 0 | - | 4.99 | 211,495 |
| Political Movements by Country | 0 | - | 4.46 | 72,498 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,836 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,423 |
| 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 | 192,972 |
| The Life of Gandhi | 0 | - | 4.37 | 13,051 |
| Countries of Africa | 0 | - | 5.00 | 2,533,344 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,935 |
