| 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 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,903 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,912 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,728,185 |
| Every European Country Shape | 0 | - | 4.96 | 203,123 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,120 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,686 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,213 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,959 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,615 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,812 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,689 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,245 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,685 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,058 |
| 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 | 23,580 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,644 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 128,421 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,885 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,130 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,311 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,620 |
| 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 |
| Byzantine History | 0 | - | 4.91 | 29,033 |
| Byzantine Emperors | 0 | - | 4.93 | 14,627 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,906 |
| Name the English Monarchs | 0 | - | 4.91 | 506,963 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 52,003 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,023 |
| Countries of the Popes | 0 | - | 4.79 | 128,800 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,941 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,616 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,614 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,289 |
| U.S. President Scramble | 0 | - | 4.40 | 117,501 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,362 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,097 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,871 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,275 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,490 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,948 |
| The Trojan War | 0 | - | 4.83 | 40,020 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,371 |
| Name that Greek Letter | 0 | - | 4.93 | 325,115 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,066 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,639 |
| Roman Emperors | 0 | - | 4.95 | 121,319 |
| 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 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,814 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 379,757 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,493 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 84,212 |
| Every Asian Country Shape | 0 | - | 4.95 | 88,664 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,135 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,761 |
| Every African Country Shape | 0 | - | 4.90 | 88,493 |
| National Founders | 0 | - | 4.40 | 83,984 |
| Random American Countries on a Map | 0 | - | 4.96 | 100,432 |
| South America Flags Map Quiz | 0 | - | 4.95 | 89,039 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,401 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,602 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,396 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,695 |
| Presidential Middle Names | 0 | - | 4.42 | 60,766 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,716 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,917 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,229 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,642 |
| 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 Flag Map - Find the Errors | 0 | - | 4.21 | 62,126 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,800 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,671 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,482 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,044 |
| Ancient Greek Words | 0 | - | 4.93 | 112,568 |
| Roman to Greek God | 0 | - | 4.52 | 123,389 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,702 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,552 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,028 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 390,320 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,595 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.45 | 113,105 |
| Groups of Things - Harry Potter | 0 | - | 4.78 | 282,818 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,247 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 171,088 |
| Africa Flags Map Quiz | 0 | - | 4.94 | 36,892 |
| Random African Countries on a Map | 0 | - | 4.99 | 298,045 |
| Eastern Africa Map Quiz | 0 | - | 4.98 | 79,618 |
| 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 |
| 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 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,517 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,751 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,213 |
| History of Russia Quiz | 0 | - | 4.47 | 32,011 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,640 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,462 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,192 |
| History of France | 0 | - | 4.61 | 57,670 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,937 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,988 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,407 |
| History of Italy | 0 | - | 4.55 | 32,165 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 76,184 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,834 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,443 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,117 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,543 |
| Name the Harry Potter Books | 0 | - | 4.31 | 280,881 |
| Harry Potter Spells | 0 | - | 4.30 | 140,113 |
| Harry Potter Places | 0 | - | 4.35 | 108,787 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 43,228 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 397,646 |
| Harry Potter Creatures | 0 | - | 4.30 | 64,488 |
| Word Scramble - Harry Potter Characters | 0 | - | 4.20 | 61,149 |
| Harry Potter Characters by Screen Time | 0 | - | 4.28 | 148,901 |
| 100 Most Common Words in Beatles Songs | 0 | - | 4.52 | 26,015 |
| 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 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,618 |
| Pope Facts | 0 | - | 4.39 | 31,405 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,076 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,797 |
| Communist Countries in History | 0 | - | 4.63 | 498,495 |
| Political Movements by Country | 0 | - | 4.46 | 72,793 |
| History of South Africa | 0 | - | 4.60 | 17,771 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,833 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,527 |
| Australian Capitals | 0 | - | 4.92 | 62,845 |
| Australia Map Quiz | 0 | - | 4.95 | 346,311 |
| Flags of North and South America | 0 | - | 4.99 | 377,491 |
| History of Mexico | 0 | - | 4.52 | 15,369 |
| South America Map Quiz | 0 | - | 5.00 | 1,557,356 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,032,410 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,409 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,162 |
| U.S. States by Governor | 0 | - | 4.43 | 18,117 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,605 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,772 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,789 |
| 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 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,937 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,762 |
| 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 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,239 |
| 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 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,637 |
| Events in U.S. History | 0 | - | 4.41 | 28,835 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,206 |
| 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 |
| Satellite Images - U.S. States | 0 | - | 4.54 | 45,386 |
| 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 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 153,397 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 102,314 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,837 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,605 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,925 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,137 |
| Shapes of Mediterranean Sea Countries | 0 | - | 4.80 | 56,106 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,960 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,352 |
