| Vatican City Country Quiz | 0 | - | 4.53 | 44,736 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 429,014 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,991 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 84,293 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,733,267 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 384,015 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,125 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,961 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,373 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,783 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,670 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,627 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,711 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,513 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,800 |
| Presidential Middle Names | 0 | - | 4.42 | 60,839 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,299 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,768 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,483 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,961 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,268 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,670 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,696 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,125 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,849 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,751 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,260 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 146,166 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,583 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,241 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,387 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,809 |
| Presidential Actors | 0 | - | 4.36 | 19,269 |
| First Ladies of the United States | 0 | - | 4.28 | 86,043 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,342 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,551 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,392 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,132 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.32 | 59,738 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,974 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,528 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,965 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,652 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,271 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,103 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,088 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,792 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,188 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,135 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,761 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,562 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,566 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,912 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,251 |
| U.S. President Scramble | 0 | - | 4.40 | 117,595 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,872 |
| The Barack Obama Presidency | 0 | - | 4.14 | 25,535 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,097 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,694 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,066 |
| Monty Python Quotes | 0 | - | 4.89 | 42,637 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,931 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,678 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,691 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,144 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,614 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,967 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 90,166 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,862 |
| National Founders | 0 | - | 4.40 | 84,010 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,179 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,884 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.38 | 24,097 |
| The George Washington Presidency | 0 | - | 4.03 | 14,622 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,790 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,786 |
| The John Adams Presidency | 0 | - | 4.12 | 8,799 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 17,005 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,790 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,399 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,779 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,945 |
| U.S. State Flags | 0 | - | 4.88 | 173,692 |
| Random U.S. States on a Map | 0 | - | 4.96 | 631,551 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,575 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,617 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,319 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,752 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,814 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,945 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,714 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,679 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,644 |
| Figures from Greek Mythology | 0 | - | 4.92 | 194,593 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,471 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 127,140 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,686 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 390,689 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,654 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 398,233 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 52,054 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,362 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,762 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,720 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,854 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 128,533 |
| Communist Countries in History | 0 | - | 4.63 | 498,952 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,845 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,112 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,157 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,663 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,243 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 195,024 |
| The Kennedy Family | 0 | - | 3.90 | 14,113 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,693 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,536 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,208 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 304,359 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,382 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,272 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,579 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,634 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,421 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 52,313 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,339 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 69,183 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,648 |
| Name the James Bond Movies | 0 | - | 4.56 | 159,686 |
| James Bond Trivia | 0 | - | 4.46 | 39,442 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,762 |
| Asia Map Quiz | 0 | - | 4.99 | 927,268 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,143 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,724 |
| Modern Day Countries of the Mughal Empire on a Map | 0 | - | 4.43 | 33,927 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,524 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,762 |
| Political Movements by Country | 0 | - | 4.46 | 72,852 |
| Flags of Oceania | 0 | - | 5.00 | 263,734 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,653 |
| Australian States and Territories | 0 | - | 4.96 | 143,139 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 146,751 |
| Australian Capitals | 0 | - | 4.92 | 62,886 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,562 |
| Australia Map Quiz | 0 | - | 4.95 | 346,645 |
| Australia True or False | 0 | - | 4.87 | 57,253 |
| Australia... or New Zealand? | 0 | - | 4.83 | 62,150 |
| Flags of North and South America | 0 | - | 4.99 | 378,536 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,101 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 145,028 |
| The Only American Country ... | 0 | - | 4.92 | 122,404 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,822 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,937 |
| South America Map Quiz | 0 | - | 5.00 | 1,559,054 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,798 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,640 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,034,065 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 59,037 |
| North America Map Quiz | 0 | - | 4.98 | 253,057 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 95,360 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 65,406 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,994 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 241,045 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,053 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,391 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,113 |
| Names of Generations | 0 | - | 4.09 | 45,629 |
| American Founding Fathers | 0 | - | 4.42 | 23,309 |
| The American Revolution | 0 | - | 4.52 | 54,403 |
| History of Florida | 0 | - | 4.45 | 9,891 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,152 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,247 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,324 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,197 |
| History of Texas | 0 | - | 4.43 | 14,707 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,356 |
| American History Quotes #1 | 0 | - | 4.37 | 96,266 |
| People on Money - United States | 0 | - | 4.31 | 63,519 |
| American History Quotes #2 | 0 | - | 4.38 | 41,546 |
| Old West History | 0 | - | 4.34 | 15,311 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,640 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.09 | 54,314 |
| Events in U.S. History | 0 | - | 4.41 | 28,869 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,540 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 20,000 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,227 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,813 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,379 |
| The American Civil War | 0 | - | 4.62 | 52,677 |
| US States Quiz | 0 | - | 5.00 | 17,032,836 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,931 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.75 | 38,574 |
| Satellite Images - U.S. States | 0 | - | 4.54 | 45,432 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,984 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 64,198 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 153,443 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 102,357 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,875 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,418 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,671 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,700 |
