| Prime Ministers of the UK | 0 | - | 4.95 | 438,093 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,856 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,449 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,497 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,437 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,167 |
| Biggest Trading Partners - South Africa | 0 | - | 4.74 | 40,249 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,690,307 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,904 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,840 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,873 |
| National Founders | 0 | - | 4.40 | 83,800 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,041 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,902 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,058 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,200 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,443 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,177 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,771 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,907 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,027 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,662 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,659 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,826 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,237 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,819 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,113 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,958 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 77,785 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,353 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,761 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,663 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,304 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,961 |
| Countries of the Popes | 0 | - | 4.79 | 127,933 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,080 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 132,957 |
| Political Movements by Country | 0 | - | 4.46 | 72,474 |
| Every African Country Shape | 0 | - | 4.90 | 87,093 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,312 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,934 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,067 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,505 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,767 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,579 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,420 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,528 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,733 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,854 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,403 |
| Name that Greek Letter | 0 | - | 4.93 | 323,178 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,270 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,967 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,598 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,136 |
| Name the English Monarchs | 0 | - | 4.91 | 501,761 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,888 |
| Hindu Countries | 0 | - | 4.86 | 50,037 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,331 |
| Random African Flag to Country | 0 | - | 4.88 | 74,716 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,469 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,572 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,303 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,641 |
| Presidential Middle Names | 0 | - | 4.41 | 60,138 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,215 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,479 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,371 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,454 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,913 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,355 |
| The Trojan War | 0 | - | 4.83 | 39,665 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,608 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,624 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,441 |
| Roman Emperors | 0 | - | 4.95 | 119,719 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,744 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,219 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,655 |
| Countries Closest to Egypt | 0 | - | 4.83 | 100,945 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,444 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,926 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,100 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,368 |
| Random African Countries on a Map | 0 | - | 4.99 | 295,430 |
| Africa Map with Random Merged Countries | 0 | - | 4.95 | 73,420 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,261 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,690 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,950 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,893 |
| The American Revolution | 0 | - | 4.52 | 54,224 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,436 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,913 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,986 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,300 |
| History of Russia Quiz | 0 | - | 4.49 | 31,887 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,757 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,815 |
| Ancient Greek Words | 0 | - | 4.93 | 111,409 |
| History of Italy | 0 | - | 4.55 | 31,945 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,418 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,480 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,631 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,181 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,150 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,807 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,685 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,759 |
| Countries that Beat Egypt | 0 | - | 4.88 | 56,911 |
| The Vietnam War | 0 | - | 4.44 | 35,490 |
| History of India | 0 | - | 4.62 | 21,404 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,955 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,404 |
| History of South Africa | 0 | - | 4.60 | 17,664 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,138 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,506 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,853 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,099 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,244 |
| First Ladies of the United States | 0 | - | 4.28 | 85,558 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,930 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,205 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,971 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,170 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,941 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,805 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,669 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,168 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,932 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,513 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,125 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,306 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,459 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,944 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,642 |
| History of Austria | 0 | - | 4.70 | 17,842 |
| Geography of the French Empire | 0 | - | 4.45 | 27,034 |
| The French Revolution | 0 | - | 4.46 | 23,913 |
| History of France | 0 | - | 4.59 | 56,873 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,464 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,244 |
| Mythology A-Z | 0 | - | 4.31 | 37,184 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,549 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,600 |
| The Vikings! | 0 | - | 4.46 | 28,324 |
| The Portuguese Empire | 0 | - | 4.58 | 12,053 |
| Arthurian Legend | 0 | - | 4.33 | 25,100 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,624 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,313 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,341 |
| Geography of the British Empire | 0 | - | 4.48 | 39,637 |
| Pope Facts | 0 | - | 4.39 | 31,212 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,777 |
| History of Iran | 0 | - | 4.66 | 16,343 |
| The Iraq War | 0 | - | 4.47 | 15,641 |
| History of China | 0 | - | 4.37 | 57,084 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,190 |
| Communist Countries in History | 0 | - | 4.63 | 495,072 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,400 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,282 |
| Countries of Africa | 0 | - | 5.00 | 2,531,579 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,310 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,668 |
| African East Coast | 0 | - | 4.96 | 95,879 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,685 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,982 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,513 |
| Australian Capitals | 0 | - | 4.92 | 62,705 |
| Australia A-Z | 0 | - | 4.54 | 49,945 |
| Australia Map Quiz | 0 | - | 4.95 | 343,926 |
| History of Mexico | 0 | - | 4.58 | 15,293 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,773 |
| U.S. States by Governor | 0 | - | 4.43 | 18,046 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,676 |
| American Political Words | 0 | - | 4.39 | 23,400 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,654 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,264 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,479 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,607 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,175 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,716 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,644 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,623 |
| U.S. President Scramble | 0 | - | 4.40 | 116,676 |
| The John Adams Presidency | 0 | - | 4.12 | 8,737 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,730 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,838 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,155 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,535 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,803 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,851 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,096 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,958 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,861 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,596 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,192 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,649 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,028 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,090 |
| Official European Union Languages | 0 | - | 4.97 | 238,217 |
