| Prime Ministers of the UK | 0 | - | 4.95 | 439,673 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,803 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,106 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 394,738 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,398 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,818 |
| Harry Potter Last Names | 0 | - | 4.64 | 949,784 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,090 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,862 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,704,420 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,392 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,170 |
| Every European Country Shape | 0 | - | 4.96 | 202,034 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,137 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,194 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,986 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,593 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,033 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,429 |
| Random African Countries on a Map | 0 | - | 4.99 | 296,657 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,520 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,197 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 170,232 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,632 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,312 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,586 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,601 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 82,870 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,917 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,206 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,040 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,135 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,437 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,342 |
| Countries of the Popes | 0 | - | 4.79 | 128,249 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,994 |
| Every African Country Shape | 0 | - | 4.90 | 87,511 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,913 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,834 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,619 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,908 |
| Presidential Middle Names | 0 | - | 4.41 | 60,353 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,206 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,411 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,640 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,721 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,460 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,205 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,954 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,249 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,381 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,846 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,487 |
| The Trojan War | 0 | - | 4.83 | 39,772 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,306 |
| Name that Greek Letter | 0 | - | 4.93 | 324,042 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,057 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,482 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,604 |
| Roman Emperors | 0 | - | 4.95 | 120,254 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,226 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,402 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,834 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,325 |
| Shakespearean Phrases | 0 | - | 4.57 | 36,762 |
| Name the English Monarchs | 0 | - | 4.91 | 503,439 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,582 |
| Every Asian Country Shape | 0 | - | 4.95 | 87,906 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,085 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,694 |
| National Founders | 0 | - | 4.40 | 83,862 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,536 |
| Eastern Africa Map Quiz | 0 | - | 4.98 | 79,094 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,678 |
| South America Flags Map Quiz | 0 | - | 4.95 | 88,154 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,191 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,030 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,122 |
| U.S. State Flags | 0 | - | 4.88 | 170,951 |
| Random U.S. States on a Map | 0 | - | 4.96 | 627,286 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,189 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,537 |
| Europe Flag Map - Find the Errors | 0 | - | 4.24 | 61,821 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,082 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,718 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,532 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,471 |
| Ancient Greek Words | 0 | - | 4.93 | 111,788 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,295 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,625 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,221 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,464 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 388,496 |
| Pope Facts | 0 | - | 4.39 | 31,272 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,488 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,511 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,012 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,096 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,822 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,390 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,270 |
| First Ladies of the United States | 0 | - | 4.28 | 85,700 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,474 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,502 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,838 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,968 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,236 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,196 |
| U.S. President Scramble | 0 | - | 4.40 | 116,863 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,225 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,779 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,987 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,613 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,927 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,418 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 302,758 |
| Shapes of Mediterranean Sea Countries | 0 | - | 4.80 | 55,921 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,846 |
| Europe Map Quiz | 0 | - | 5.00 | 4,767,709 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,135 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,025 |
| History of Russia Quiz | 0 | - | 4.47 | 31,941 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,108 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,819 |
| History of France | 0 | - | 4.59 | 57,181 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,046 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,939 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,814 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,302 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,696 |
| History of Italy | 0 | - | 4.55 | 32,029 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,378 |
| Byzantine History | 0 | - | 4.91 | 28,898 |
| Byzantine Emperors | 0 | - | 4.92 | 14,294 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,704 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,276 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,918 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,120 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,381 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,595 |
| Geography of the British Empire | 0 | - | 4.48 | 39,725 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,177 |
| Medieval English History | 0 | - | 4.53 | 43,556 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,964 |
| Communist Countries in History | 0 | - | 4.63 | 496,203 |
| Political Movements by Country | 0 | - | 4.46 | 72,590 |
| History of India | 0 | - | 4.62 | 21,445 |
| Countries of Africa | 0 | - | 5.00 | 2,541,714 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,041 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,403 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,283 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,995 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,450 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,203 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,712 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,376 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,363 |
| African East Coast | 0 | - | 4.96 | 96,176 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,708 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,045 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,264 |
| African Island Countries | 0 | - | 4.96 | 101,768 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,654 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,375 |
| History of South Africa | 0 | - | 4.60 | 17,709 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,295 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,825 |
| Australian States and Territories | 0 | - | 4.96 | 142,144 |
| Australian Capitals | 0 | - | 4.92 | 62,737 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,330 |
| Australia Map Quiz | 0 | - | 4.95 | 344,903 |
| Australia True or False | 0 | - | 4.87 | 56,922 |
| Flags of North and South America | 0 | - | 4.99 | 373,824 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,682 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,325 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,981 |
| History of Mexico | 0 | - | 4.58 | 15,323 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,896 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,693 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,813 |
| North America Map Quiz | 0 | - | 4.98 | 248,985 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,777 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,778 |
| Names of Generations | 0 | - | 4.09 | 45,086 |
| Topological Map of the USA Quiz | 0 | - | 4.49 | 29,137 |
| U.S. States by Governor | 0 | - | 4.43 | 18,073 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,549 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,709 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,383 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,697 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,421 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,715 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,658 |
| The George Washington Presidency | 0 | - | 4.03 | 14,553 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,740 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,658 |
| The John Adams Presidency | 0 | - | 4.12 | 8,753 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,941 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,747 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,209 |
