| Vatican City Country Quiz | 0 | - | 4.53 | 44,463 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,096 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,483 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,871 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,852 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,339 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,629 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,753 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,222 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,270 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,342 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,538 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,937 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,729 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 94,010 |
| Presidential Middle Names | 0 | - | 4.41 | 60,415 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,212 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,457 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,379 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,671 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,053 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,488 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,224 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,952 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,658 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,809 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,859 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,989 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,270 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,505 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,281 |
| Presidential Actors | 0 | - | 4.36 | 19,200 |
| First Ladies of the United States | 0 | - | 4.28 | 85,749 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,983 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,251 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,273 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,238 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 24,000 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,802 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,724 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,857 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,765 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,475 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,116 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,330 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,148 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,271 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,992 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,097 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,484 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,516 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,846 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,162 |
| U.S. President Scramble | 0 | - | 4.40 | 116,957 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,649 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,426 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,110 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,657 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,096 |
| Monty Python Quotes | 0 | - | 4.89 | 42,511 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,402 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,700 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,111 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,802 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,001 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,567 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,509 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,423 |
| National Founders | 0 | - | 4.40 | 83,885 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,107 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,830 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,678 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,040 |
| The George Washington Presidency | 0 | - | 4.03 | 14,569 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,750 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,673 |
| The John Adams Presidency | 0 | - | 4.12 | 8,762 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,949 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,749 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,335 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,708 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,870 |
| U.S. State Flags | 0 | - | 4.88 | 171,359 |
| Random U.S. States on a Map | 0 | - | 4.96 | 627,847 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,238 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,786 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,527 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,737 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,868 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,224 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,194 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,687 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,744 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,012 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,230 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,057 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 388,750 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,461 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 395,189 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,816 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,094 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,248 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,371 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,552 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,954 |
| Communist Countries in History | 0 | - | 4.63 | 496,564 |
| Oceania Map Quiz | 0 | - | 4.98 | 653,378 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,120 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,618 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,213 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,890 |
| The Kennedy Family | 0 | - | 3.90 | 14,083 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,452 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,200 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 52,992 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 303,002 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,591 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,613 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,081 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,612 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,239 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,888 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,219 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,092 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,197 |
| Name the James Bond Movies | 0 | - | 4.56 | 158,738 |
| James Bond Trivia | 0 | - | 4.46 | 39,310 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,768 |
| Asia Map Quiz | 0 | - | 4.99 | 919,814 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,706 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,521 |
| Modern Day Countries of the Mughal Empire on a Map | 0 | - | 4.42 | 33,713 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,956 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,606 |
| Political Movements by Country | 0 | - | 4.46 | 72,623 |
| Flags of Oceania | 0 | - | 5.00 | 260,576 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,942 |
| Australian States and Territories | 0 | - | 4.96 | 142,246 |
| Australia Cities Map Quiz | 0 | - | 4.82 | 145,731 |
| Australian Capitals | 0 | - | 4.92 | 62,756 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,367 |
| Australia Map Quiz | 0 | - | 4.95 | 345,193 |
| Australia True or False | 0 | - | 4.87 | 56,956 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,712 |
| Flags of North and South America | 0 | - | 4.99 | 374,389 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,721 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,410 |
| The Only American Country ... | 0 | - | 4.92 | 121,825 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,282 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,125 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,865 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,641 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,982 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,936 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,218 |
| North America Map Quiz | 0 | - | 4.98 | 249,512 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,856 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,416 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,619 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,763 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,810 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,743 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,622 |
| Names of Generations | 0 | - | 4.09 | 45,203 |
| American Founding Fathers | 0 | - | 4.42 | 23,242 |
| The American Revolution | 0 | - | 4.52 | 54,295 |
| History of Florida | 0 | - | 4.45 | 9,843 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,115 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,207 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,420 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,147 |
| History of Texas | 0 | - | 4.43 | 14,654 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,035 |
| American History Quotes #1 | 0 | - | 4.37 | 96,104 |
| People on Money - United States | 0 | - | 4.31 | 63,376 |
| American History Quotes #2 | 0 | - | 4.38 | 41,444 |
| Old West History | 0 | - | 4.34 | 15,285 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,507 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,123 |
| Events in U.S. History | 0 | - | 4.41 | 28,715 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,528 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,953 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,134 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,749 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,277 |
| The American Civil War | 0 | - | 4.62 | 52,504 |
| US States Quiz | 0 | - | 5.00 | 16,919,806 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,830 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.75 | 38,491 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,231 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,827 |
| Cartoon Versions of U.S. States | 0 | - | 4.75 | 64,014 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 153,176 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 102,180 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,718 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,719 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,757 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,312 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,827 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,219 |
