| First Names of U.S. Presidents | 0 | - | 4.86 | 384,012 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,427 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,135 |
| Countries of the Popes | 0 | - | 4.78 | 128,951 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 429,014 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,734 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,733,216 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,991 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,312 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,133 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,713 |
| Shakespeare Quotes | 0 | - | 4.43 | 71,653 |
| Pope Facts | 0 | - | 4.39 | 31,439 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,263 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,051 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,596 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 390,682 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,125 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,465 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,974 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,678 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 398,226 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 241,044 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,627 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,670 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,846 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,650 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,263 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,100 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,085 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,791 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,534 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 146,161 |
| Figures from Greek Mythology | 0 | - | 4.92 | 194,562 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,583 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,967 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,368 |
| Harry Potter Last Names | 0 | - | 4.64 | 952,421 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 119,762 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,955 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 128,532 |
| Top 10 Oldest African Countries | 0 | - | 4.87 | 28,328 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,782 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,199 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,373 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,093 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,526 |
| Every European Country Shape | 0 | - | 4.96 | 203,355 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,486 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 201,072 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,449 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,705 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,373 |
| Name that Greek Letter | 0 | - | 4.93 | 325,406 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,855 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,182 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,570 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,079 |
| UK Immigration by Country | 0 | - | 4.94 | 141,953 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,381 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 76,064 |
| Name the English Monarchs | 0 | - | 4.91 | 507,673 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 84,288 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,147 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,760 |
| National Founders | 0 | - | 4.40 | 84,008 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,711 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,512 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,800 |
| Presidential Middle Names | 0 | - | 4.42 | 60,838 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,299 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,768 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,481 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,959 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,267 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,961 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,669 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,696 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,592 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,474 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,843 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,614 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,685 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 321,012 |
| Random European Flag to Country | 0 | - | 4.90 | 184,573 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,693 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,064 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,979 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 98,022 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,166 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,727 |
| The Trojan War | 0 | - | 4.83 | 40,124 |
| Ancient Greek Words | 0 | - | 4.93 | 112,740 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,362 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 128,117 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,732 |
| Roman Emperors | 0 | - | 4.95 | 121,525 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,471 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,044 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,133 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,250 |
| Monty Python Quotes | 0 | - | 4.89 | 42,637 |
| Shakespearean Phrases | 0 | - | 4.58 | 36,937 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,677 |
| Animals in British History | 0 | - | 4.43 | 26,130 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,113 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 873,693 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,105 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,774 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,414 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,179 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,884 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,240 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,387 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,809 |
| First Ladies of the United States | 0 | - | 4.28 | 86,043 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,562 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,565 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,912 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,342 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,551 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,392 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 195,023 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,131 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.32 | 59,733 |
| The Barack Obama Presidency | 0 | - | 4.14 | 25,535 |
| Random U.S. States on a Map | 0 | - | 4.96 | 631,545 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,965 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,270 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,751 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,811 |
| History of Russia Quiz | 0 | - | 4.47 | 32,032 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,750 |
| Countries Invaded by the USSR | 0 | - | 4.30 | 94,537 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,259 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,676 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,639 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,089 |
| Roman to Greek God | 0 | - | 4.52 | 123,568 |
| History of Italy | 0 | - | 4.55 | 32,199 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 127,137 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,659 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,867 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,482 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,157 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,329 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,701 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 52,053 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 171,273 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,854 |
| Random African Countries on a Map | 0 | - | 4.99 | 298,546 |
| Did You Even Watch - The Crown? | 0 | - | 4.34 | 11,301 |
| Communist Countries in History | 0 | - | 4.63 | 498,947 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,837 |
| Australian Capitals | 0 | - | 4.92 | 62,886 |
| Australia Map Quiz | 0 | - | 4.95 | 346,643 |
| History of Mexico | 0 | - | 4.52 | 15,382 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,374 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,221 |
| U.S. Bill of Rights | 0 | - | 4.52 | 35,006 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,801 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,878 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.38 | 24,097 |
| The George Washington Presidency | 0 | - | 4.03 | 14,622 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,790 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,785 |
| U.S. President Scramble | 0 | - | 4.40 | 117,594 |
| The John Adams Presidency | 0 | - | 4.12 | 8,799 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 17,005 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,790 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,399 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,779 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,945 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,872 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,124 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,536 |
| The American Civil War | 0 | - | 4.62 | 52,677 |
| Name a Valid U.S. President by Birth State | 0 | - | 4.60 | 9,867 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,888 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,708 |
| Official European Union Languages | 0 | - | 4.97 | 240,469 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,890 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,290 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,266 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,574 |
| Most Forested European Countries | 0 | - | 4.80 | 75,772 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,727 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,630 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,695 |
| History of Austria | 0 | - | 4.70 | 17,993 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,420 |
| Geography of the French Empire | 0 | - | 4.45 | 27,242 |
| The French Revolution | 0 | - | 4.47 | 24,175 |
| History of France | 0 | - | 4.61 | 57,767 |
| French History Multiple Choice | 0 | - | 4.55 | 33,285 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,581 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,303 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,081 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.54 | 49,702 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,545 |
