| Prime Ministers of the UK | 0 | - | 4.95 | 439,713 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,807 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,126 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 394,768 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,405 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,842 |
| Harry Potter Last Names | 0 | - | 4.64 | 949,811 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,099 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,868 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,704,868 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,400 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,179 |
| Every European Country Shape | 0 | - | 4.96 | 202,055 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,144 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,201 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,986 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,600 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,061 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,429 |
| Random African Countries on a Map | 0 | - | 4.99 | 296,667 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,523 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,277 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 170,240 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,641 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,314 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,600 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,612 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 82,912 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,933 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,217 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,046 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,138 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,440 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,347 |
| Countries of the Popes | 0 | - | 4.79 | 128,256 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,007 |
| Every African Country Shape | 0 | - | 4.90 | 87,528 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,919 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,841 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,635 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,922 |
| Presidential Middle Names | 0 | - | 4.41 | 60,361 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,206 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,414 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,642 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,728 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,462 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,206 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,971 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,254 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,392 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,848 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,522 |
| The Trojan War | 0 | - | 4.83 | 39,774 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,359 |
| Name that Greek Letter | 0 | - | 4.93 | 324,052 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,066 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,485 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,606 |
| Roman Emperors | 0 | - | 4.95 | 120,264 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,234 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,411 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,853 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,334 |
| Shakespearean Phrases | 0 | - | 4.57 | 36,762 |
| Name the English Monarchs | 0 | - | 4.91 | 503,485 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,593 |
| Every Asian Country Shape | 0 | - | 4.95 | 87,914 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,085 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,694 |
| National Founders | 0 | - | 4.40 | 83,863 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,538 |
| Eastern Africa Map Quiz | 0 | - | 4.98 | 79,097 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,685 |
| South America Flags Map Quiz | 0 | - | 4.95 | 88,167 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,209 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,030 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,139 |
| U.S. State Flags | 0 | - | 4.88 | 171,017 |
| Random U.S. States on a Map | 0 | - | 4.96 | 627,333 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,191 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,539 |
| Europe Flag Map - Find the Errors | 0 | - | 4.24 | 61,829 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,098 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,731 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,533 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,487 |
| Ancient Greek Words | 0 | - | 4.93 | 111,802 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,314 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,648 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,224 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,466 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 388,525 |
| Pope Facts | 0 | - | 4.39 | 31,274 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,489 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,514 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,014 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,096 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,823 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,404 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,270 |
| First Ladies of the United States | 0 | - | 4.28 | 85,704 |
| 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 | 77,198 |
| U.S. President Scramble | 0 | - | 4.40 | 116,868 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,226 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,783 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,988 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,615 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,930 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,418 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 302,772 |
| Shapes of Mediterranean Sea Countries | 0 | - | 4.80 | 55,922 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,847 |
| Europe Map Quiz | 0 | - | 5.00 | 4,767,993 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,186 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,028 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,113 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,821 |
| History of France | 0 | - | 4.59 | 57,192 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,050 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,939 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,817 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,319 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,696 |
| History of Italy | 0 | - | 4.55 | 32,031 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,382 |
| Byzantine History | 0 | - | 4.91 | 28,901 |
| Byzantine Emperors | 0 | - | 4.92 | 14,304 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,705 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,278 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,921 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,127 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,382 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,601 |
| Geography of the British Empire | 0 | - | 4.48 | 39,726 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,182 |
| Medieval English History | 0 | - | 4.53 | 43,557 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,966 |
| Communist Countries in History | 0 | - | 4.63 | 496,230 |
| Political Movements by Country | 0 | - | 4.46 | 72,592 |
| History of India | 0 | - | 4.62 | 21,445 |
| Countries of Africa | 0 | - | 5.00 | 2,542,019 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,044 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,495 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,398 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,004 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,464 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,218 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,725 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,388 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,371 |
| African East Coast | 0 | - | 4.96 | 96,185 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,724 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,049 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,277 |
| African Island Countries | 0 | - | 4.96 | 101,783 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,677 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,376 |
| History of South Africa | 0 | - | 4.60 | 17,709 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,326 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,830 |
| Australian States and Territories | 0 | - | 4.96 | 142,149 |
| Australian Capitals | 0 | - | 4.92 | 62,739 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,331 |
| Australia Map Quiz | 0 | - | 4.95 | 344,919 |
| Australia True or False | 0 | - | 4.87 | 56,922 |
| Flags of North and South America | 0 | - | 4.99 | 373,844 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,683 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,330 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,009 |
| History of Mexico | 0 | - | 4.58 | 15,323 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,982 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,710 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,885 |
| North America Map Quiz | 0 | - | 4.98 | 249,037 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,777 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,976 |
| Names of Generations | 0 | - | 4.09 | 45,096 |
| Topological Map of the USA Quiz | 0 | - | 4.49 | 29,140 |
| U.S. States by Governor | 0 | - | 4.43 | 18,073 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,550 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,709 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,384 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,701 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,423 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,717 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,660 |
| 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 | 30,659 |
| 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 |
