| Prime Ministers of the UK | 0 | - | 4.95 | 437,638 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,749 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,007 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,264 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,131 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,686,887 |
| Every European Country Shape | 0 | - | 4.96 | 201,245 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,899 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,265 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,843 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,409 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,818 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 492,827 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,825 |
| Random European Countries on a Map | 0 | - | 4.97 | 283,011 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 317,442 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,984 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,323 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,862 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,361 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,408 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 281,257 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 118,808 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,577 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,124 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 72,789 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,569 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,840 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,848 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,092 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,244 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,679 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,571 |
| Byzantine History | 0 | - | 4.91 | 28,749 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,176 |
| Name the English Monarchs | 0 | - | 4.91 | 501,292 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,673 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,862 |
| Countries of the Popes | 0 | - | 4.79 | 127,844 |
| Every African Country Shape | 0 | - | 4.90 | 86,957 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,464 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,163 |
| U.S. President Scramble | 0 | - | 4.40 | 116,616 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,141 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,836 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,470 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,668 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,845 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,755 |
| The Trojan War | 0 | - | 4.83 | 39,638 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,913 |
| Name that Greek Letter | 0 | - | 4.93 | 323,028 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,497 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,398 |
| Roman Emperors | 0 | - | 4.95 | 119,625 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,893 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,064 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,041 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 378,374 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,136 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,562 |
| Every Asian Country Shape | 0 | - | 4.95 | 87,537 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,049 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,643 |
| National Founders | 0 | - | 4.40 | 83,783 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,290 |
| Random African Countries on a Map | 0 | - | 4.99 | 295,271 |
| Eastern Africa Map Quiz | 0 | - | 4.98 | 78,718 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,254 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,555 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,504 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,212 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,557 |
| Presidential Middle Names | 0 | - | 4.41 | 60,086 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,161 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,418 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,927 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,345 |
| U.S. State Flags | 0 | - | 4.89 | 169,624 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,991 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,380 |
| Europe Flag Map - Find the Errors | 0 | - | 4.25 | 61,598 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,723 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,432 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,489 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,422 |
| Ancient Greek Words | 0 | - | 4.93 | 111,302 |
| Roman to Greek God | 0 | - | 4.52 | 122,637 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,454 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,983 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,106 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 387,417 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,337 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.44 | 112,583 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,641 |
| Random Asian Countries on a Map | 0 | - | 4.90 | 169,674 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,324 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,061 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,750 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,015 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,235 |
| First Ladies of the United States | 0 | - | 4.28 | 85,526 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,429 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,472 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,797 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,921 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,196 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,906 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,151 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,926 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,359 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,789 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,345 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,571 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,909 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,402 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,907 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,583 |
| History of France | 0 | - | 4.59 | 56,799 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,228 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,284 |
| History of Italy | 0 | - | 4.55 | 31,930 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,606 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,156 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,783 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,727 |
| Name the Harry Potter Books | 0 | - | 4.31 | 278,581 |
| Harry Potter Spells | 0 | - | 4.33 | 139,495 |
| Harry Potter Places | 0 | - | 4.34 | 108,076 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 43,000 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 392,818 |
| Harry Potter Creatures | 0 | - | 4.29 | 63,926 |
| Word Scramble - Harry Potter Characters | 0 | - | 4.20 | 60,749 |
| Harry Potter Characters by Screen Time | 0 | - | 4.27 | 147,720 |
| 100 Most Common Words in Beatles Songs | 0 | - | 4.52 | 25,418 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,303 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,276 |
| Geography of the British Empire | 0 | - | 4.48 | 39,627 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,942 |
| Pope Facts | 0 | - | 4.39 | 31,192 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,913 |
| Communist Countries in History | 0 | - | 4.63 | 494,756 |
| Political Movements by Country | 0 | - | 4.46 | 72,452 |
| History of India | 0 | - | 4.61 | 21,392 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,383 |
| Countries of Africa | 0 | - | 5.00 | 2,528,967 |
| Flags of Africa Quiz | 0 | - | 5.00 | 468,934 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,218 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,558 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,807 |
| African East Coast | 0 | - | 4.96 | 95,776 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,590 |
| History of South Africa | 0 | - | 4.60 | 17,657 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,288 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,431 |
| Australian Capitals | 0 | - | 4.92 | 62,691 |
| Australia Map Quiz | 0 | - | 4.95 | 343,754 |
| Flags of North and South America | 0 | - | 4.99 | 371,694 |
| History of Mexico | 0 | - | 4.58 | 15,290 |
| South America Map Quiz | 0 | - | 5.00 | 1,546,982 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,121 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,180 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,915 |
| U.S. States by Governor | 0 | - | 4.43 | 18,037 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,500 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,664 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,646 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,228 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,595 |
| The George Washington Presidency | 0 | - | 4.03 | 14,528 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,712 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,617 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,613 |
| The John Adams Presidency | 0 | - | 4.12 | 8,728 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,913 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,724 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,198 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,297 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,653 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,829 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,516 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,128 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,088 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,906 |
| The American Civil War | 0 | - | 4.62 | 52,362 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,762 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.74 | 38,430 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,840 |
| Satellite Images - U.S. States | 0 | - | 4.53 | 45,100 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,105 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 301,913 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 152,801 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 101,992 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,594 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,072 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,990 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,656 |
| Shapes of Mediterranean Sea Countries | 0 | - | 4.80 | 55,793 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,560 |
