| Prime Ministers of the UK | 0 | - | 4.95 | 438,113 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,884 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,449 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,500 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,440 |
| 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 | 3,690,392 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,909 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,841 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,874 |
| National Founders | 0 | - | 4.40 | 83,800 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,048 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,905 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,058 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,201 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,448 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,179 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,773 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,907 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,031 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,665 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,664 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,829 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,240 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,820 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,119 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,963 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 78,040 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,358 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,766 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,670 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,309 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,964 |
| Countries of the Popes | 0 | - | 4.79 | 127,937 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,082 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 133,009 |
| Political Movements by Country | 0 | - | 4.46 | 72,479 |
| Every African Country Shape | 0 | - | 4.90 | 87,095 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,313 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,936 |
| 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 | 58,422 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,536 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,736 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,859 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,419 |
| Name that Greek Letter | 0 | - | 4.93 | 323,183 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,271 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,972 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,607 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,139 |
| Name the English Monarchs | 0 | - | 4.91 | 501,781 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,892 |
| Hindu Countries | 0 | - | 4.86 | 50,039 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,331 |
| Random African Flag to Country | 0 | - | 4.88 | 74,717 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,470 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,575 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,306 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,644 |
| Presidential Middle Names | 0 | - | 4.41 | 60,139 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,216 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,479 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,372 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,455 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,913 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,358 |
| The Trojan War | 0 | - | 4.83 | 39,666 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,608 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,630 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,442 |
| Roman Emperors | 0 | - | 4.95 | 119,724 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,744 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,221 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,657 |
| Countries Closest to Egypt | 0 | - | 4.83 | 100,948 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,447 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,926 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,101 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,368 |
| Random African Countries on a Map | 0 | - | 4.99 | 295,440 |
| Africa Map with Random Merged Countries | 0 | - | 4.95 | 73,423 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,262 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,692 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,950 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,894 |
| 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 | 133,917 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,003 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,305 |
| History of Russia Quiz | 0 | - | 4.49 | 31,888 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,769 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,850 |
| Ancient Greek Words | 0 | - | 4.93 | 111,415 |
| History of Italy | 0 | - | 4.55 | 31,948 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,419 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,490 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,632 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,181 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,155 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,808 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,689 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,761 |
| Countries that Beat Egypt | 0 | - | 4.88 | 56,912 |
| The Vietnam War | 0 | - | 4.44 | 35,491 |
| History of India | 0 | - | 4.62 | 21,405 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,957 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,406 |
| 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 | 136,100 |
| 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 | 23,931 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,205 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,973 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,171 |
| 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 | 13,671 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,257 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,934 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,517 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,132 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,311 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,465 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,946 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,644 |
| History of Austria | 0 | - | 4.70 | 17,842 |
| Geography of the French Empire | 0 | - | 4.45 | 27,034 |
| The French Revolution | 0 | - | 4.46 | 23,915 |
| History of France | 0 | - | 4.59 | 56,878 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,464 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,246 |
| Mythology A-Z | 0 | - | 4.31 | 37,185 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,551 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,603 |
| The Vikings! | 0 | - | 4.46 | 28,325 |
| The Portuguese Empire | 0 | - | 4.58 | 12,053 |
| Arthurian Legend | 0 | - | 4.33 | 25,100 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,625 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,316 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,342 |
| Geography of the British Empire | 0 | - | 4.48 | 39,638 |
| Pope Facts | 0 | - | 4.39 | 31,213 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,785 |
| History of Iran | 0 | - | 4.66 | 16,343 |
| The Iraq War | 0 | - | 4.47 | 15,641 |
| History of China | 0 | - | 4.37 | 57,088 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,191 |
| Communist Countries in History | 0 | - | 4.63 | 495,087 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,402 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,312 |
| Countries of Africa | 0 | - | 5.00 | 2,531,651 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,380 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,672 |
| African East Coast | 0 | - | 4.96 | 95,880 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,688 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,993 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,515 |
| Australian Capitals | 0 | - | 4.92 | 62,705 |
| Australia A-Z | 0 | - | 4.54 | 49,945 |
| Australia Map Quiz | 0 | - | 4.95 | 343,933 |
| History of Mexico | 0 | - | 4.58 | 15,294 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,802 |
| 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 | 55,267 |
| 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 | 13,717 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,644 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,625 |
| 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 | 23,156 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,536 |
| 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 | 82,960 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,866 |
| 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 | 104,658 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,030 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,096 |
| Official European Union Languages | 0 | - | 4.97 | 238,226 |
