| Vatican City Country Quiz | 0 | - | 4.53 | 44,329 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,469 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,367 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,239 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,667 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,694,037 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,225 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,094 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,928 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,381 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,909 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,489 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,779 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,475 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,490 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,621 |
| Random European Countries on a Map | 0 | - | 4.97 | 283,294 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,747 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,432 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 393,656 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 118,964 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,341 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,201 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,300 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,086 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 80,649 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,519 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,874 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,774 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,949 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 387,855 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,057 |
| Countries of the Popes | 0 | - | 4.79 | 128,027 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,985 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,766 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,842 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,635 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,382 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,716 |
| Presidential Middle Names | 0 | - | 4.41 | 60,184 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,183 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,273 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,544 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,660 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,397 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,172 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,681 |
| Every European Country Shape | 0 | - | 4.96 | 201,490 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,909 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,071 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,789 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,419 |
| The Trojan War | 0 | - | 4.83 | 39,689 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,850 |
| Name that Greek Letter | 0 | - | 4.93 | 323,300 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,726 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,484 |
| Roman Emperors | 0 | - | 4.95 | 119,865 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,044 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,758 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,211 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,463 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,180 |
| Shakespearean Phrases | 0 | - | 4.57 | 36,724 |
| Name the English Monarchs | 0 | - | 4.91 | 502,174 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,306 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,063 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,669 |
| National Founders | 0 | - | 4.40 | 83,817 |
| Random African Countries on a Map | 0 | - | 4.99 | 295,655 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,837 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,965 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,951 |
| Random U.S. States on a Map | 0 | - | 4.96 | 625,906 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,457 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 317,859 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,845 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,519 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,467 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,971 |
| Ancient Greek Words | 0 | - | 4.93 | 111,499 |
| Roman to Greek God | 0 | - | 4.52 | 122,752 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,795 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,082 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,282 |
| Harry Potter Last Names | 0 | - | 4.64 | 949,048 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 281,572 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,725 |
| Pope Facts | 0 | - | 4.39 | 31,226 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 169,910 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,423 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,406 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,955 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,068 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,776 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,184 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,250 |
| First Ladies of the United States | 0 | - | 4.28 | 85,600 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,448 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,486 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,815 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,947 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,217 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,028 |
| U.S. President Scramble | 0 | - | 4.40 | 116,722 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,180 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,513 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,952 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,557 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,867 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,389 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,815 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,644 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,232 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,957 |
| History of Russia Quiz | 0 | - | 4.47 | 31,905 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,979 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,686 |
| History of France | 0 | - | 4.59 | 56,930 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,493 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,968 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,901 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 87,729 |
| History of Italy | 0 | - | 4.55 | 31,960 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,295 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,099 |
| Byzantine History | 0 | - | 4.91 | 28,812 |
| Byzantine Emperors | 0 | - | 4.94 | 13,328 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,642 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,206 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 67,308 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,838 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,879 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,324 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,410 |
| Geography of the British Empire | 0 | - | 4.48 | 39,653 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,016 |
| Medieval English History | 0 | - | 4.53 | 43,491 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,935 |
| Communist Countries in History | 0 | - | 4.63 | 495,363 |
| Political Movements by Country | 0 | - | 4.46 | 72,505 |
| History of India | 0 | - | 4.62 | 21,413 |
| Countries of Africa | 0 | - | 5.00 | 2,533,972 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,944 |
| Flags of Africa Quiz | 0 | - | 5.00 | 470,452 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,589 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,745 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,053 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,858 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,512 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,148 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,199 |
| African East Coast | 0 | - | 4.96 | 95,963 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,372 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,786 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,882 |
| African Island Countries | 0 | - | 4.96 | 101,540 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,279 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,208 |
| History of South Africa | 0 | - | 4.60 | 17,679 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,578 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,597 |
| Australian States and Territories | 0 | - | 4.96 | 141,837 |
| Australian Capitals | 0 | - | 4.92 | 62,714 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,270 |
| Australia Map Quiz | 0 | - | 4.95 | 344,202 |
| Australia True or False | 0 | - | 4.87 | 56,821 |
| Flags of North and South America | 0 | - | 4.99 | 372,626 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,571 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,163 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,635 |
| History of Mexico | 0 | - | 4.58 | 15,303 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,811 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,892 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,022,085 |
| North America Map Quiz | 0 | - | 4.98 | 248,211 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,697 |
| United States Map Quiz | 0 | - | 4.98 | 4,156,375 |
| Names of Generations | 0 | - | 4.09 | 44,711 |
| U.S. States by Governor | 0 | - | 4.43 | 18,056 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,518 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,686 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,344 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,665 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,325 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,665 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,623 |
| The George Washington Presidency | 0 | - | 4.03 | 14,540 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,723 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,642 |
| The John Adams Presidency | 0 | - | 4.12 | 8,742 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,929 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,742 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,203 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,317 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,671 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,848 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,713 |
| American Founding Fathers | 0 | - | 4.42 | 23,217 |
| The American Revolution | 0 | - | 4.52 | 54,234 |
