| Prime Ministers of the UK | 0 | - | 4.96 | 436,384 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,877 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,285 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,615 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,912 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 391,362 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,672,193 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,775 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,086 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,650 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,772 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,253 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,827 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 492,102 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,581 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,106 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,404 |
| U.S. President Scramble | 0 | - | 4.40 | 116,433 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,077 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,691 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,769 |
| Random U.S. States on a Map | 0 | - | 4.96 | 623,433 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,738 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,589 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,724 |
| Harry Potter Last Names | 0 | - | 4.64 | 947,214 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 280,627 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 118,562 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,266 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,765 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,664 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 300,771 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,477 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,805 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,907 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,447 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,323 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,645 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,776 |
| Harry Potter A-Z | 0 | - | 4.42 | 218,706 |
| Name the English Monarchs | 0 | - | 4.92 | 499,866 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,526 |
| Countries of the Popes | 0 | - | 4.79 | 127,553 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,797 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,126 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,530 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,697 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,706 |
| The Trojan War | 0 | - | 4.83 | 39,547 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,282 |
| Name that Greek Letter | 0 | - | 4.93 | 322,439 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,098 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 56,380 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,372 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,254 |
| Roman Emperors | 0 | - | 4.95 | 119,145 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,611 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,312 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,798 |
| Monty Python Quotes | 0 | - | 4.88 | 42,369 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 377,711 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,802 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,154 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,023 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,612 |
| National Founders | 0 | - | 4.40 | 83,727 |
| Random African Countries on a Map | 0 | - | 4.99 | 294,561 |
| Random African Flag to Country | 0 | - | 4.88 | 74,475 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,970 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,277 |
| U.S. Senators by State | 0 | - | 4.45 | 39,837 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,231 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,889 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,298 |
| Presidential Middle Names | 0 | - | 4.41 | 59,906 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,958 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,173 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,843 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,267 |
| Random U.S. Presidents by Picture | 0 | - | 4.39 | 65,980 |
| U.S. State Flags | 0 | - | 4.89 | 168,626 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,848 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,282 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,585 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 316,659 |
| Random European Flag to Country | 0 | - | 4.89 | 181,474 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,455 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,381 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,077 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,134 |
| Ancient Greek Words | 0 | - | 4.93 | 111,054 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,989 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,965 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,814 |
| Shakespearean Phrases | 0 | - | 4.57 | 36,602 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.44 | 112,281 |
| Random Asian Countries on a Map | 0 | - | 4.90 | 169,279 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,167 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,959 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,695 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,591 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,195 |
| First Ladies of the United States | 0 | - | 4.28 | 85,358 |
| The Bill Clinton Presidency | 0 | - | 4.22 | 31,394 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,447 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,759 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,863 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,157 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,645 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,074 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,877 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,313 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,729 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,001 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,554 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,834 |
| History of Russia Quiz | 0 | - | 4.49 | 31,835 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,189 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,756 |
| History of France | 0 | - | 4.59 | 56,557 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,748 |
| History of Italy | 0 | - | 4.55 | 31,891 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,878 |
| Byzantine History | 0 | - | 4.91 | 28,689 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,552 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,080 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,664 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,698 |
| Biggest British Empire Countries | 0 | - | 4.73 | 99,411 |
| Name the Harry Potter Books | 0 | - | 4.31 | 277,873 |
| Harry Potter Spells | 0 | - | 4.32 | 139,194 |
| Harry Potter Places | 0 | - | 4.34 | 107,791 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 42,898 |
| Harry Potter Creatures | 0 | - | 4.29 | 63,728 |
| Word Scramble - Harry Potter Characters | 0 | - | 4.19 | 60,565 |
| Harry Potter Characters by Screen Time | 0 | - | 4.27 | 147,356 |
| Title in the Lyrics #2 - The Beatles | 0 | - | 4.56 | 93,502 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,257 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,068 |
| Geography of the British Empire | 0 | - | 4.48 | 39,569 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,755 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,379 |
| Pope Facts | 0 | - | 4.39 | 31,124 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,867 |
| Communist Countries in History | 0 | - | 4.63 | 493,729 |
| Political Movements by Country | 0 | - | 4.46 | 72,372 |
| History of India | 0 | - | 4.61 | 21,334 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,290 |
| Countries of Africa | 0 | - | 5.00 | 2,519,541 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,410 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,939 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,209 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,301 |
| African East Coast | 0 | - | 4.96 | 95,460 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,319 |
| History of South Africa | 0 | - | 4.60 | 17,634 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,156 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,151 |
| Australian Capitals | 0 | - | 4.92 | 62,648 |
| Australia Map Quiz | 0 | - | 4.94 | 343,167 |
| Flags of North and South America | 0 | - | 4.99 | 369,813 |
| History of Mexico | 0 | - | 4.58 | 15,255 |
| South America Map Quiz | 0 | - | 5.00 | 1,544,089 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,595 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,609 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,840 |
| U.S. States by Governor | 0 | - | 4.43 | 18,011 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,418 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,615 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,599 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,111 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,541 |
| The George Washington Presidency | 0 | - | 4.03 | 14,501 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,685 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,561 |
| The John Adams Presidency | 0 | - | 4.12 | 8,704 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,901 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,710 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,189 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,262 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,637 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,806 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,437 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,042 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,711 |
| The American Civil War | 0 | - | 4.62 | 52,263 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,722 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.74 | 38,376 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,763 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,019 |
| Cartoon Versions of U.S. States | 0 | - | 4.77 | 63,683 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 152,697 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 101,912 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,522 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,647 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,646 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,970 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,435 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,147 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,805 |
