| First Names of U.S. Presidents | 0 | - | 4.85 | 379,309 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,010 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,218 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,588 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 389,242 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,648,075 |
| Harry Potter Last Names | 0 | - | 4.64 | 945,636 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,636 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,955 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,310 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 126,624 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,344 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,573 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 215,995 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,341 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,092 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,936 |
| Countries of the Popes | 0 | - | 4.79 | 127,059 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 118,149 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,692 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,132 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,474 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,756 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,013 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,746 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,280 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,222 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 69,973 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,892 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,258 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,480 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.53 | 56,081 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,087 |
| Shakespeare's Plays Quiz | 0 | - | 4.38 | 385,396 |
| Name the English Monarchs | 0 | - | 4.92 | 497,301 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,128 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,707 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,830 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,336 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,901 |
| Presidential Middle Names | 0 | - | 4.41 | 59,626 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,078 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,655 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,731 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,702 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,417 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,143 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 22,991 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,106 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,610 |
| Olympian Gods Quiz | 0 | - | 4.96 | 494,494 |
| The Trojan War | 0 | - | 4.83 | 39,390 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,098 |
| Name that Greek Letter | 0 | - | 4.94 | 321,403 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,318 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,021 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,291 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,952 |
| Roman Emperors | 0 | - | 4.95 | 118,265 |
| Largest Cities once part of the Byzantine Empire | 0 | - | 4.83 | 21,358 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,378 |
| Shakespearean Phrases | 0 | - | 4.57 | 36,515 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,053 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,076 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,985 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,559 |
| National Founders | 0 | - | 4.40 | 83,612 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,886 |
| Random African Countries on a Map | 0 | - | 4.99 | 293,063 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,868 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,660 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,155 |
| First Ladies of the United States | 0 | - | 4.28 | 85,189 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,340 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,407 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,710 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,098 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,176 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,147 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,977 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,306 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,814 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,239 |
| Random U.S. States on a Map | 0 | - | 4.96 | 620,697 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,668 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,088 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,665 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,907 |
| History of Russia Quiz | 0 | - | 4.49 | 31,770 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,298 |
| Ancient Greek Words | 0 | - | 4.92 | 110,530 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,643 |
| History of Italy | 0 | - | 4.55 | 31,796 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,053 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,539 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,458 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,957 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,353 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,521 |
| Vatican City Country Quiz | 0 | - | 4.53 | 43,951 |
| Pope Facts | 0 | - | 4.39 | 31,010 |
| Random Asian Countries on a Map | 0 | - | 4.90 | 168,560 |
| Communist Countries in History | 0 | - | 4.63 | 492,052 |
| History of India | 0 | - | 4.61 | 21,262 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,124 |
| Africa Map Quiz | 0 | - | 5.00 | 2,102,528 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,309 |
| History of South Africa | 0 | - | 4.60 | 17,590 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,350 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,703 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,363 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 54,872 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,461 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,442 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,807 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,653 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,428 |
| U.S. President Scramble | 0 | - | 4.40 | 116,133 |
| The John Adams Presidency | 0 | - | 4.12 | 8,673 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,678 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,374 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,761 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,326 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,667 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,402 |
| Europe Map Quiz | 0 | - | 5.00 | 4,726,864 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 525,966 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,788 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,714 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,004 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,469 |
| History of Austria | 0 | - | 4.70 | 17,734 |
| Geography of the French Empire | 0 | - | 4.48 | 26,910 |
| The French Revolution | 0 | - | 4.46 | 23,745 |
| History of France | 0 | - | 4.59 | 55,862 |
| French History Multiple Choice | 0 | - | 4.55 | 32,850 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,368 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,736 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,745 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,783 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,401 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,905 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,493 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,635 |
| Roman Names for Places | 0 | - | 4.62 | 57,813 |
| Byzantine History | 0 | - | 4.91 | 28,578 |
| The Vikings! | 0 | - | 4.45 | 28,234 |
| The Portuguese Empire | 0 | - | 4.54 | 11,979 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 36,995 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,702 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,291 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,051 |
| Biggest British Empire Countries | 0 | - | 4.73 | 87,217 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,152 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,686 |
| Geography of the British Empire | 0 | - | 4.48 | 39,453 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,249 |
| Medieval English History | 0 | - | 4.53 | 43,289 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,929 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,811 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,436,907 |
| Asia Map Quiz | 0 | - | 4.99 | 905,593 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,882 |
| History of Iran | 0 | - | 4.65 | 16,256 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,805 |
| History of China | 0 | - | 4.37 | 56,635 |
| Political Movements by Country | 0 | - | 4.46 | 72,219 |
| States of India | 0 | - | 4.94 | 189,642 |
| The Life of Gandhi | 0 | - | 4.37 | 13,014 |
| Countries of Africa | 0 | - | 5.00 | 2,503,952 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,155 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,105 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,965 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,694 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,454 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,451 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,138 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,411 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,191 |
| African East Coast | 0 | - | 4.96 | 94,902 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,889 |
| The Only African Country ... | 0 | - | 4.99 | 128,251 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,728 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,766 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,222 |
| African Island Countries | 0 | - | 4.96 | 100,640 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,429 |
| Pixelated Africa Map | 0 | - | 4.98 | 98,934 |
| Countries Closest to Africa | 0 | - | 4.96 | 155,997 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,574 |
| Flags of Oceania | 0 | - | 5.00 | 254,549 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,715 |
| Australian States and Territories | 0 | - | 4.95 | 140,539 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,295 |
| Australian Capitals | 0 | - | 4.92 | 62,583 |
| Australian Immigration by Country | 0 | - | 4.81 | 76,986 |
| Australia Map Quiz | 0 | - | 4.94 | 342,200 |
| Australia True or False | 0 | - | 4.87 | 56,456 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,007 |
| Flags of North and South America | 0 | - | 4.99 | 365,306 |
