| Vatican City Country Quiz | 0 | - | 4.53 | 44,686 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,728 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,683 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,737 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 84,212 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,728,188 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,912 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,689 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,213 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,959 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,903 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,059 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,885 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,273 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,120 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,462 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,732 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,899 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,934 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,649 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,615 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,486 |
| Figures from Greek Mythology | 0 | - | 4.91 | 189,015 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,581 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 390,320 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,595 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,023 |
| Countries of the Popes | 0 | - | 4.79 | 128,800 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,644 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,941 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 128,421 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,130 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,362 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,871 |
| Every European Country Shape | 0 | - | 4.96 | 203,123 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,948 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,373 |
| Name that Greek Letter | 0 | - | 4.93 | 325,115 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,727 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,451 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,939 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,906 |
| Name the English Monarchs | 0 | - | 4.91 | 506,964 |
| Every Asian Country Shape | 0 | - | 4.95 | 88,664 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,135 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,616 |
| Every African Country Shape | 0 | - | 4.90 | 88,493 |
| National Founders | 0 | - | 4.40 | 83,984 |
| South America Flags Map Quiz | 0 | - | 4.95 | 89,039 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,614 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,602 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,397 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,696 |
| Presidential Middle Names | 0 | - | 4.42 | 60,766 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,289 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,716 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,311 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,917 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,229 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,937 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,642 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,620 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,637 |
| U.S. State Flags | 0 | - | 4.89 | 173,191 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,490 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,778 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,685 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,045 |
| The Trojan War | 0 | - | 4.83 | 40,020 |
| Ancient Greek Words | 0 | - | 4.93 | 112,568 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,066 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,702 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,639 |
| Roman Emperors | 0 | - | 4.95 | 121,319 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,814 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,761 |
| Africa Flags Map Quiz | 0 | - | 4.94 | 36,892 |
| Eastern Africa Map Quiz | 0 | - | 4.98 | 79,618 |
| Random American Countries on a Map | 0 | - | 4.96 | 100,432 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,401 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,152 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,868 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,098 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,374 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,786 |
| First Ladies of the United States | 0 | - | 4.28 | 86,003 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,548 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,560 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,899 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.38 | 24,083 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,328 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,503 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,376 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,838 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,108 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 59,352 |
| The Barack Obama Presidency | 0 | - | 4.14 | 25,516 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,957 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,213 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,245 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,800 |
| History of Russia Quiz | 0 | - | 4.47 | 32,011 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,462 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,671 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,937 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,482 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,988 |
| Roman to Greek God | 0 | - | 4.52 | 123,389 |
| History of Italy | 0 | - | 4.55 | 32,165 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,512 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,552 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,834 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,443 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,971 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,117 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 397,647 |
| Pope Facts | 0 | - | 4.39 | 31,405 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 171,088 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,797 |
| Random African Countries on a Map | 0 | - | 4.99 | 298,045 |
| Communist Countries in History | 0 | - | 4.63 | 498,495 |
| History of South Africa | 0 | - | 4.60 | 17,771 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,833 |
| Australian Capitals | 0 | - | 4.92 | 62,845 |
| Australia Map Quiz | 0 | - | 4.95 | 346,311 |
| History of Mexico | 0 | - | 4.52 | 15,369 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,409 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,162 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,605 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,739 |
| The George Washington Presidency | 0 | - | 4.03 | 14,618 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,785 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,762 |
| U.S. President Scramble | 0 | - | 4.40 | 117,501 |
| The John Adams Presidency | 0 | - | 4.12 | 8,795 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,998 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,781 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,386 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,768 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,936 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,829 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 29,058 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,097 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,441 |
| The American Civil War | 0 | - | 4.62 | 52,640 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,899 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.75 | 38,546 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,163 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,356 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 304,083 |
| Shapes of Mediterranean Sea Countries | 0 | - | 4.80 | 56,107 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,795 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,397 |
| Official European Union Languages | 0 | - | 4.97 | 239,910 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,732 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,518 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,751 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,129 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,056 |
| History of Austria | 0 | - | 4.70 | 17,982 |
| Geography of the French Empire | 0 | - | 4.45 | 27,222 |
| The French Revolution | 0 | - | 4.47 | 24,153 |
| History of France | 0 | - | 4.61 | 57,670 |
| French History Multiple Choice | 0 | - | 4.55 | 33,251 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,565 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,255 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,056 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,373 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,872 |
| Things with Names from Classical Mythology | 0 | - | 4.28 | 88,107 |
| Countries Italy Declared War On | 0 | - | 4.74 | 46,918 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,338 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,235 |
| Roman Names for Places | 0 | - | 4.62 | 58,745 |
| Byzantine History | 0 | - | 4.91 | 29,033 |
| Byzantine Emperors | 0 | - | 4.93 | 14,627 |
| History of The Netherlands | 0 | - | 4.46 | 17,563 |
| The Vikings! | 0 | - | 4.46 | 28,417 |
| The Portuguese Empire | 0 | - | 4.58 | 12,114 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,323 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,478 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,314 |
| Geography of the British Empire | 0 | - | 4.48 | 39,857 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,990 |
| British History A-Z #1 | 0 | - | 4.45 | 47,288 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,983 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,119 |
| Medieval English History | 0 | - | 4.53 | 43,671 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,339 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,099 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,100 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,915 |
| Asia Map Quiz | 0 | - | 4.99 | 925,891 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,854 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,616 |
| History of Iran | 0 | - | 4.66 | 16,431 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,077 |
| Chinese Inventions | 0 | - | 4.30 | 33,867 |
| History of China | 0 | - | 4.35 | 57,630 |
| History of India | 0 | - | 4.62 | 21,523 |
