| Vatican City Country Quiz | 0 | - | 4.53 | 44,140 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,686 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,353 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,670,017 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,190 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,506 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,523 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,072 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,544 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,952 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,397 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,203 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,833 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,272 |
| Presidential Middle Names | 0 | - | 4.41 | 59,876 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,118 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,924 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,008 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,116 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,829 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,250 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,618 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,760 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,152 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,140 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,425 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,707 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,862 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,225 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,521 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,191 |
| Presidential Actors | 0 | - | 4.36 | 19,101 |
| First Ladies of the United States | 0 | - | 4.28 | 85,347 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,856 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,151 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,616 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,066 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,873 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,560 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,715 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,724 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,414 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,762 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,412 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,336 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,722 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,904 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,389 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,443 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,753 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,067 |
| U.S. President Scramble | 0 | - | 4.40 | 116,406 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,303 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,647 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,801 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,089 |
| Monty Python Quotes | 0 | - | 4.88 | 42,364 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,801 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,754 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,451 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,409 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,138 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,905 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,738 |
| National Founders | 0 | - | 4.40 | 83,715 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,147 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,065 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,940 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,692 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,534 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,952 |
| The George Washington Presidency | 0 | - | 4.03 | 14,498 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,680 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,551 |
| The John Adams Presidency | 0 | - | 4.12 | 8,701 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,897 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,707 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,258 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,633 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,799 |
| U.S. State Flags | 0 | - | 4.89 | 168,436 |
| Random U.S. States on a Map | 0 | - | 4.96 | 623,209 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,826 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,828 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,530 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,512 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,781 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,413 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,632 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,414 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,642 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,541 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,118 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,806 |
| Shakespeare's Plays Quiz | 0 | - | 4.38 | 386,569 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,224 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 280,562 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 391,177 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,571 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,730 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 118,529 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,000 |
| Communist Countries in History | 0 | - | 4.63 | 493,612 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,277 |
| Modern Day Countries of the Mughal Empire on a Map | 0 | - | 4.42 | 33,375 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,324 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,208 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,778 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,976 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,551 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,188 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,930 |
| The Kennedy Family | 0 | - | 3.90 | 14,045 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,118 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,677 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,740 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 300,665 |
| Europe Map Quiz | 0 | - | 5.00 | 4,742,413 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,380 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,232 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,692 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,013 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,424 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,068 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,614 |
| Biggest British Empire Countries | 0 | - | 4.73 | 99,342 |
| Name the James Bond Movies | 0 | - | 4.56 | 157,969 |
| James Bond Trivia | 0 | - | 4.46 | 39,201 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,353 |
| Asia Map Quiz | 0 | - | 4.99 | 909,989 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,006 |
| Political Movements by Country | 0 | - | 4.46 | 72,359 |
| States of India | 0 | - | 4.94 | 191,369 |
| Countries of Africa | 0 | - | 5.00 | 2,517,909 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,586 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,002 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,161 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,165 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,084 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,827 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,600 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,762 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,409 |
| African East Coast | 0 | - | 4.96 | 95,418 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,605 |
| The Only African Country ... | 0 | - | 4.98 | 128,637 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,890 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,285 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,070 |
| African Island Countries | 0 | - | 4.96 | 101,071 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,279 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,335 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,644 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,919 |
| Flags of Oceania | 0 | - | 5.00 | 256,559 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,114 |
| Australian States and Territories | 0 | - | 4.96 | 141,247 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,719 |
| Australian Capitals | 0 | - | 4.92 | 62,642 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,108 |
| Australia Map Quiz | 0 | - | 4.94 | 343,080 |
| Australia True or False | 0 | - | 4.87 | 56,630 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,240 |
| Flags of North and South America | 0 | - | 4.99 | 369,527 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,345 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,452 |
| The Only American Country ... | 0 | - | 4.92 | 121,096 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,661 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,718 |
| South America Map Quiz | 0 | - | 5.00 | 1,543,727 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,548 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,056 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,299 |
| North America Map Quiz | 0 | - | 4.98 | 246,112 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,196 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,342 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,151 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,708 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,504 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,919 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,107 |
| American Founding Fathers | 0 | - | 4.41 | 23,096 |
| The American Revolution | 0 | - | 4.52 | 54,126 |
| History of Florida | 0 | - | 4.45 | 9,785 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,160 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,361 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,108 |
| History of Texas | 0 | - | 4.43 | 14,574 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,649 |
| American History Quotes #1 | 0 | - | 4.37 | 95,771 |
| People on Money - United States | 0 | - | 4.31 | 63,251 |
| American History Quotes #2 | 0 | - | 4.38 | 41,262 |
| Old West History | 0 | - | 4.33 | 15,236 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,322 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,799 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,505 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,882 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,037 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,673 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,130 |
