| Prime Ministers of the UK | 0 | - | 4.95 | 377,065 |
| Canadian Prime Ministers Quiz | 0 | - | 4.56 | 45,637 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 98,162 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 176,443 |
| Soviet Leaders 1917–1991 | 0 | - | 4.42 | 86,689 |
| Prime Ministers of Australia | 0 | - | 4.47 | 27,375 |
| Top 10 Richest Countries in Europe | 0 | - | 4.88 | 133,445 |
| Biggest Trading Partners - European Union | 0 | - | 4.90 | 64,060 |
| Country by Photo of its Leader | 0 | - | 4.79 | 114,251 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 141,373 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 49,949 |
| Biggest Trading Partners - UK | 0 | - | 4.86 | 56,266 |
| Name the Popes Quiz | 0 | - | 4.44 | 99,422 |
| Countries of the Popes | 0 | - | 4.77 | 78,867 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,129,858 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 61,601 |
| National Founders | 0 | - | 4.38 | 78,958 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 175,470 |
| Paramount Leaders of China | 0 | - | 4.31 | 9,847 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 391,432 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 129,914 |
| Biggest Trading Partners - Russia | 0 | - | 4.56 | 33,749 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 47,943 |
| UK Cities Map Quiz | 0 | - | 4.94 | 430,430 |
| The Dictator Files: Chairman Mao | 0 | - | 4.30 | 18,030 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 350,556 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.90 | 47,568 |
| Counties of England Map Quiz | 0 | - | 4.97 | 285,006 |
| Pope Facts | 0 | - | 4.44 | 17,448 |
| Prime Ministers of Israel | 0 | - | 4.10 | 16,000 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 220,377 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 164,618 |
| Countries of Europe After World War II | 0 | - | 4.98 | 168,999 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 137,727 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 132,152 |
| Countries That Border Russia | 0 | - | 4.98 | 422,978 |
| Countries of the Soviet Union | 0 | - | 4.98 | 183,376 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 73,859 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.33 | 39,191 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,030 |
| Political Movements by Country | 0 | - | 4.46 | 68,135 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 91,751 |
| UK Immigration by Country | 0 | - | 4.95 | 123,979 |
| United Kingdom Country Quiz | 0 | - | 4.93 | 116,929 |
| Countries that Visit the UK the Most | 0 | - | 4.84 | 61,534 |
| English Monarchs Quiz | 0 | - | 4.91 | 442,497 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 83,471 |
| Top 10 Richest Countries in Asia | 0 | - | 4.86 | 72,310 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 100,539 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 92,277 |
| African Countries with the Most Christians | 0 | - | 4.92 | 66,585 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 66,823 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 108,557 |
| U.S. Federal Agency Acronyms | 0 | - | 4.51 | 75,593 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,192 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,199 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 156,718 |
| Every European Country Shape | 0 | - | 4.95 | 169,876 |
| Most Guessed European Capitals | 0 | - | 4.89 | 95,988 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,402 |
| Most Forested European Countries | 0 | - | 4.82 | 67,516 |
| Category Elimination - European Countries #1 | 0 | - | 4.88 | 75,669 |
| European Capital Superlatives - Top 2 | 0 | - | 4.93 | 61,272 |
| Countries that Border Poland | 0 | - | 4.99 | 157,480 |
| Russia Country Quiz | 0 | - | 4.84 | 102,211 |
| Countries With the Most Russian Speakers | 0 | - | 4.94 | 55,303 |
| Countries Bordering Serbia | 0 | - | 4.95 | 82,285 |
| Countries Italy Declared War On | 0 | - | 4.79 | 39,631 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.82 | 9,594 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,237 |
| Roman Emperors | 0 | - | 4.95 | 94,598 |
| Monty Python Quotes | 0 | - | 4.89 | 40,219 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 220,754 |
| Biggest Trading Partners - Australia | 0 | - | 4.88 | 42,429 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 70,199 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 114,753 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 86,695 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 87,381 |
| The Trojan War | 0 | - | 4.81 | 35,599 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 579,056 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 81,400 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 31,924 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 64,912 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 98,778 |
| Invasions of Great Britain | 0 | - | 4.48 | 55,116 |
| 2025 English Premier League Teams | 0 | - | 4.85 | 729,683 |
| Scotland A-Z | 0 | - | 4.75 | 37,517 |
| Biggest Trading Partners - Turkey | 0 | - | 4.82 | 44,245 |
| Countries Closest to Israel | 0 | - | 4.87 | 98,040 |
| Biggest Trading Partners - China | 0 | - | 4.96 | 69,389 |
| Countries with the Most Hindus | 0 | - | 4.93 | 112,274 |
| Colonies of Africa with a Map | 0 | - | 4.80 | 47,825 |
| Biggest Trading Partners - South Africa | 0 | - | 4.82 | 37,225 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 34,953 |
| U.S. Bill of Rights | 0 | - | 4.56 | 30,958 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.31 | 10,252 |
| U.S. Vice Presidents | 0 | - | 4.42 | 117,848 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 96,016 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.56 | 80,378 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,165 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 79,364 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,387 |
| The American Revolution | 0 | - | 4.55 | 51,444 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 453,513 |
| Random European Flag to Country | 0 | - | 4.90 | 159,962 |
| Flags of Countries That Border France | 0 | - | 4.90 | 111,547 |
| The Reign of Napoleon | 0 | - | 4.53 | 35,890 |
| Flags of Countries that Border Germany | 0 | - | 4.85 | 86,331 |
| Olympian Gods Quiz | 0 | - | 4.96 | 454,660 |
| Name that Greek Letter | 0 | - | 4.94 | 293,868 |
| Ancient Greek Words | 0 | - | 4.90 | 96,070 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 110,195 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 395,952 |
| British Monopoly Board - Map Quiz | 0 | - | 4.44 | 18,941 |
| Shakespeare's Plays Quiz | 0 | - | 4.41 | 345,287 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.87 | 26,294 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.33 | 24,990 |
| Countries "Ruled" by King Charles III | 0 | - | 4.79 | 80,523 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 252,570 |
| The Vietnam War | 0 | - | 4.41 | 32,526 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 97,648 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 242,772 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.44 | 275,565 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 51,460 |
| Category Elimination - U.S. States #1 | 0 | - | 4.91 | 192,851 |
| Europe Map Quiz | 0 | - | 5.00 | 4,250,176 |
| Random European Countries on a Map | 0 | - | 4.98 | 257,834 |
| Save Europeans by Guessing Countries | 0 | - | 4.85 | 163,018 |
| Arms Exports - Russia | 0 | - | 4.47 | 23,208 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 99,177 |
| Communist Countries in History | 0 | - | 4.65 | 450,963 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 66,138 |
| Byzantine History | 0 | - | 4.87 | 26,053 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.25 | 70,441 |
| History of The Netherlands | 0 | - | 4.42 | 15,624 |
| The Vikings! | 0 | - | 4.44 | 27,002 |
| The Portuguese Empire | 0 | - | 4.54 | 11,281 |
| Arthurian Legend | 0 | - | 4.34 | 24,212 |
| Biggest British Empire Countries | 0 | - | 4.66 | 78,353 |
| Which Country of the United Kingdom? | 0 | - | 4.59 | 34,851 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.41 | 60,156 |
| Most-Visited Countries by the British | 0 | - | 4.70 | 60,018 |
| James Bond Movies | 0 | - | 4.64 | 142,621 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.90 | 30,437 |
| Wives of King Henry VIII | 0 | - | 4.53 | 44,458 |
| Countries the UK Declared War On | 0 | - | 4.57 | 110,816 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 52,957 |
| Medieval English History | 0 | - | 4.52 | 40,526 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.55 | 13,742 |
| Scotland Trivia | 0 | - | 4.57 | 54,758 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,333,344 |
| Asia Map Quiz | 0 | - | 4.99 | 772,638 |
| History of Iran Quiz | 0 | - | 4.63 | 15,039 |
| The Iraq War | 0 | - | 4.43 | 14,254 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 15,530 |
| Chinese Inventions | 0 | - | 4.26 | 32,501 |
| History of China | 0 | - | 4.39 | 49,842 |
| The Life of Gandhi | 0 | - | 4.42 | 12,529 |
| History of India | 0 | - | 4.52 | 19,064 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.57 | 51,361 |
| Africa Map Quiz | 0 | - | 5.00 | 1,923,561 |
| African Countries with the Most Muslims | 0 | - | 4.77 | 80,124 |
| History of South Africa | 0 | - | 4.59 | 16,452 |
| Oceania Map Quiz | 0 | - | 4.97 | 561,774 |
| Australian Capitals | 0 | - | 4.90 | 52,924 |
| History of Mexico | 0 | - | 4.55 | 13,777 |
| United States Map Quiz | 0 | - | 4.98 | 3,878,583 |
| American Political Words | 0 | - | 4.40 | 22,233 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.10 | 25,014 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.06 | 14,709 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.16 | 10,051 |
| Governors Who Ran For President | 0 | - | 4.46 | 18,821 |
| U.S. Presidents by Event | 0 | - | 4.57 | 28,863 |
| First Ladies of the United States | 0 | - | 4.27 | 79,383 |
| Presidential Middle Names | 0 | - | 4.36 | 55,844 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,407 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,740 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.31 | 62,408 |
| U.S. Presidents Who Died in Office | 0 | - | 4.72 | 31,005 |
| Random U.S. Vice President to President | 0 | - | 4.57 | 23,002 |
| U.S. President Scramble | 0 | - | 4.39 | 90,079 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.62 | 13,707 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 21,741 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.46 | 20,667 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 44,868 |
| Biggest European Cities by Letter | 0 | - | 4.64 | 118,007 |
| Official European Union Languages | 0 | - | 4.98 | 198,578 |
| European Countries in their Native Language | 0 | - | 4.99 | 142,776 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 381,585 |
| European Capitals with the Least Sunshine | 0 | - | 4.48 | 47,370 |
| European Secessionist Movements on a Map | 0 | - | 4.55 | 31,094 |
| European Countries with NO Wolves | 0 | - | 4.64 | 63,487 |
| European Cities with the Biggest Economies | 0 | - | 4.58 | 35,053 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 201,101 |
| Europe Map with Random Merged Countries | 0 | - | 4.96 | 262,819 |
| Albania Country Quiz | 0 | - | 4.51 | 33,865 |
| History of Russia Quiz | 0 | - | 4.48 | 29,720 |
| Russia by Picture | 0 | - | 4.35 | 18,654 |
| Russian History A-Z | 0 | - | 4.34 | 17,224 |
| History of Austria | 0 | - | 4.68 | 16,263 |
