| U.S. Presidents Quiz | 0 | - | 5.00 | 3,707,643 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,001 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,562 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,000 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,635 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,255 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,418 |
| Countries of the Popes | 0 | - | 4.79 | 128,326 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,007 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,285 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,051 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,926 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,732 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,915 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,698 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,977 |
| Presidential Middle Names | 0 | - | 4.41 | 60,399 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,447 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,663 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,047 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,483 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,459 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,726 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,326 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,075 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,303 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,126 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,188 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,494 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,874 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,072 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,934 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,340 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,208 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,184 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,969 |
| Name the English Monarchs | 0 | - | 4.91 | 503,869 |
| Every African Country Shape | 0 | - | 4.90 | 87,637 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,459 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,279 |
| First Ladies of the United States | 0 | - | 4.28 | 85,730 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,978 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,243 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,247 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,236 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,997 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,057 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,856 |
| Every European Country Shape | 0 | - | 4.96 | 202,171 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,574 |
| The Trojan War | 0 | - | 4.83 | 39,796 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,796 |
| Name that Greek Letter | 0 | - | 4.93 | 324,148 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,224 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,643 |
| Roman Emperors | 0 | - | 4.95 | 120,374 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,288 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 42,049 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,496 |
| Pope Facts | 0 | - | 4.39 | 31,290 |
| Every Asian Country Shape | 0 | - | 4.95 | 87,976 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,096 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,704 |
| National Founders | 0 | - | 4.40 | 83,879 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,195 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,554 |
| Eastern Africa Map Quiz | 0 | - | 4.98 | 79,156 |
| South America Flags Map Quiz | 0 | - | 4.95 | 88,270 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,674 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,747 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,669 |
| U.S. President Scramble | 0 | - | 4.40 | 116,914 |
| The John Adams Presidency | 0 | - | 4.12 | 8,760 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,749 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,869 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,945 |
| U.S. State Flags | 0 | - | 4.88 | 171,270 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,223 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,863 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,818 |
| Ancient Greek Words | 0 | - | 4.93 | 111,894 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,485 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,800 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.89 | 99,462 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.86 | 114,263 |
| Countries that Start with A - Shape Quiz | 0 | - | 4.93 | 34,690 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.94 | 82,937 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,541 |
| Random African Countries on a Map | 0 | - | 4.99 | 296,810 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,765 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,350 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,106 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,830 |
| The George Washington Presidency | 0 | - | 4.03 | 14,563 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,947 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,333 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,705 |
| Europe Map Quiz | 0 | - | 5.00 | 4,770,484 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,524 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,048 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,263 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,285 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,198 |
| History of Russia Quiz | 0 | - | 4.47 | 31,948 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,552 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,584 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,683 |
| History of Italy | 0 | - | 4.55 | 32,052 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,274 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,718 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,295 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,952 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,970 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 170,332 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,862 |
| Communist Countries in History | 0 | - | 4.63 | 496,475 |
| Countries that Start with B - Shape Quiz | 0 | - | 4.88 | 27,410 |
| History of India | 0 | - | 4.62 | 21,452 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,517 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,518 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,574 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,939 |
| History of South Africa | 0 | - | 4.60 | 17,715 |
| Oceania Map Quiz | 0 | - | 4.98 | 648,348 |
| Australian Capitals | 0 | - | 4.92 | 62,751 |
| History of Mexico | 0 | - | 4.58 | 15,334 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,364 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,032 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 629,891 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,537 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,211 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,746 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,216 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,397 |
| Shapes of Mediterranean Sea Countries | 0 | - | 4.80 | 55,940 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,312 |
| Official European Union Languages | 0 | - | 4.97 | 238,897 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,118 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,001 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,491 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,520 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,149 |
| History of Austria | 0 | - | 4.70 | 17,901 |
| Geography of the French Empire | 0 | - | 4.45 | 27,154 |
| The French Revolution | 0 | - | 4.47 | 24,058 |
| History of France | 0 | - | 4.59 | 57,266 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,946 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,071 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,838 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,683 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,408 |
| Byzantine History | 0 | - | 4.91 | 28,914 |
| Byzantine Emperors | 0 | - | 4.92 | 14,353 |
| History of The Netherlands | 0 | - | 4.46 | 17,481 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| The Portuguese Empire | 0 | - | 4.58 | 12,082 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,402 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,656 |
| Geography of the British Empire | 0 | - | 4.48 | 39,733 |
| Medieval English History | 0 | - | 4.53 | 43,569 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,633 |
| Asia Map Quiz | 0 | - | 4.99 | 919,431 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,669 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,225 |
| History of Iran | 0 | - | 4.66 | 16,373 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,980 |
| Vietnam War Countries | 0 | - | 4.82 | 94,354 |
| Chinese Inventions | 0 | - | 4.30 | 33,821 |
| History of China | 0 | - | 4.37 | 57,310 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,474 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,859 |
| Countries by Founding Story | 0 | - | 4.95 | 77,374 |
| Independence from Whom | 0 | - | 4.99 | 212,106 |
| Political Movements by Country | 0 | - | 4.46 | 72,618 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,740 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,598 |
| India A-Z | 0 | - | 4.42 | 34,179 |
| Bay of Bengal Countries With an Empty Map | 0 | - | 4.67 | 75,587 |
| Countries of Africa | 0 | - | 5.00 | 2,544,457 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,091 |
| Flags of Africa Quiz | 0 | - | 5.00 | 473,049 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,087 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,328 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,783 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,467 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,428 |
| African East Coast | 0 | - | 4.96 | 96,273 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,815 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,131 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,434 |
| African Island Countries | 0 | - | 4.96 | 101,859 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,809 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,408 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,888 |
| Australian States and Territories | 0 | - | 4.96 | 142,224 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,362 |
| Australia Map Quiz | 0 | - | 4.95 | 345,091 |
| Australia True or False | 0 | - | 4.87 | 56,949 |
| Flags of North and South America | 0 | - | 4.99 | 374,230 |
