| U.S. Presidents by Picture | 0 | - | 4.87 | 426,700 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,989 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,701,926 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,974 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,352 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,408 |
| Prime Ministers of the UK | 0 | - | 4.95 | 439,383 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,077 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,771 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,092 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,070 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,506 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,412 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,513 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,794 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,565 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 93,863 |
| Presidential Middle Names | 0 | - | 4.41 | 60,318 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,200 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,389 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,626 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,017 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,452 |
| U.S. President Scramble | 0 | - | 4.40 | 116,827 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,201 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,856 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,915 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,005 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,322 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,666 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,783 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,083 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,151 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,935 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,961 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,550 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,900 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,329 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,267 |
| First Ladies of the United States | 0 | - | 4.28 | 85,681 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,234 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,146 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,218 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,981 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,563 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,839 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,502 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,467 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,804 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,117 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,975 |
| Byzantine History | 0 | - | 4.91 | 28,882 |
| Byzantine Emperors | 0 | - | 4.92 | 14,240 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,736 |
| Name the English Monarchs | 0 | - | 4.91 | 503,161 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,774 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,149 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,470 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,500 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,834 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,962 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,705 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,413 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,880 |
| Every European Country Shape | 0 | - | 4.96 | 201,920 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,167 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,309 |
| The Trojan War | 0 | - | 4.83 | 39,753 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,969 |
| Name that Greek Letter | 0 | - | 4.93 | 323,929 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,971 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,473 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,571 |
| Roman Emperors | 0 | - | 4.95 | 120,168 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,176 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,931 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,342 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,288 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 378,912 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,511 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,857 |
| National Founders | 0 | - | 4.40 | 83,851 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,652 |
| The George Washington Presidency | 0 | - | 4.03 | 14,550 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,737 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,655 |
| The John Adams Presidency | 0 | - | 4.12 | 8,751 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,939 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,744 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,329 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,691 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,859 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,596 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,284 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,759 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,517 |
| Random European Countries on a Map | 0 | - | 4.97 | 283,987 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 318,878 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,010 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,135 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,345 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,214 |
| Ancient Greek Words | 0 | - | 4.93 | 111,713 |
| Roman to Greek God | 0 | - | 4.52 | 122,908 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,156 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,966 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,186 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,420 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 388,349 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,427 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.44 | 112,810 |
| Groups of Things - Harry Potter | 0 | - | 4.80 | 281,851 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,886 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,278 |
| Countries of the Popes | 0 | - | 4.79 | 128,187 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,865 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,267 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,486 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,787 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,082 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,816 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,205 |
| Europe Map Quiz | 0 | - | 5.00 | 4,765,594 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,858 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,010 |
| History of Russia Quiz | 0 | - | 4.47 | 31,933 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,066 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,833 |
| History of France | 0 | - | 4.59 | 57,091 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,740 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,322 |
| History of Italy | 0 | - | 4.55 | 32,001 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,680 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,255 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,899 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,062 |
| Name the Harry Potter Books | 0 | - | 4.31 | 279,504 |
| Harry Potter Spells | 0 | - | 4.33 | 139,727 |
| Harry Potter Places | 0 | - | 4.34 | 108,337 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 43,071 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 394,495 |
| Harry Potter Creatures | 0 | - | 4.29 | 64,138 |
| Word Scramble - Harry Potter Characters | 0 | - | 4.20 | 60,902 |
| Harry Potter Characters by Screen Time | 0 | - | 4.27 | 148,275 |
| 100 Most Common Words in Beatles Songs | 0 | - | 4.52 | 25,583 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,366 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,554 |
| Geography of the British Empire | 0 | - | 4.48 | 39,702 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,138 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,129 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,080 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,694 |
| Communist Countries in History | 0 | - | 4.63 | 495,995 |
| Political Movements by Country | 0 | - | 4.46 | 72,558 |
| History of India | 0 | - | 4.62 | 21,438 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,472 |
| Countries of Africa | 0 | - | 5.00 | 2,539,713 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,908 |
| Africa Map Quiz | 0 | - | 5.00 | 2,119,079 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,910 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,348 |
| African East Coast | 0 | - | 4.96 | 96,124 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,981 |
| History of South Africa | 0 | - | 4.60 | 17,698 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,879 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,788 |
| Australian Capitals | 0 | - | 4.92 | 62,734 |
| Australia Map Quiz | 0 | - | 4.95 | 344,782 |
| Flags of North and South America | 0 | - | 4.99 | 373,520 |
| History of Mexico | 0 | - | 4.58 | 15,317 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,413 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,339 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,114 |
| United States Map Quiz | 0 | - | 4.98 | 4,160,451 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,000 |
| U.S. States by Governor | 0 | - | 4.43 | 18,067 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,542 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,704 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,690 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,400 |
| Presidential Actors | 0 | - | 4.36 | 19,185 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,145 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,066 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,611 |
| The Kennedy Family | 0 | - | 3.90 | 14,075 |
| Events in U.S. History | 0 | - | 4.41 | 28,686 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,119 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,100 |
| The Most Recent... United States | 0 | - | 4.45 | 18,465 |
| The American Civil War | 0 | - | 4.62 | 52,444 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,493 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,924 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,813 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,437 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,682 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,234 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,207 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,245,485 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,199 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,640 |
