| Countries that Border Poland | 0 | - | 4.99 | 172,122 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,736 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,834 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,508 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,095 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,942 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,913 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,978 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 78,626 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,382 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,781 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,688 |
| Countries That Border Russia | 0 | - | 4.98 | 461,284 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,559 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,799 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,459 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,826 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,288 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,448 |
| Russia Country Quiz | 0 | - | 4.85 | 114,337 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,426 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,873 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,413 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,300 |
| Name the English Monarchs | 0 | - | 4.91 | 501,821 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,696 |
| The Trojan War | 0 | - | 4.83 | 39,671 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,460 |
| Name that Greek Letter | 0 | - | 4.93 | 323,209 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,627 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,446 |
| Roman Emperors | 0 | - | 4.95 | 119,732 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,192 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,112 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,683 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,121 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,947 |
| The Only European Country ... | 0 | - | 4.91 | 216,167 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,869 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,940 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,647 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,691 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,241,174 |
| Poland Country Quiz | 0 | - | 4.22 | 63,205 |
| History of Russia Quiz | 0 | - | 4.49 | 31,895 |
| Ancient Greek Words | 0 | - | 4.93 | 111,428 |
| History of Italy | 0 | - | 4.55 | 31,949 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,632 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,182 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,134 |
| Counties of England | 0 | - | 4.97 | 795,327 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,810 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,509 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,928 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,227 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,890 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,180 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,200 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,493 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,043 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,314 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,040 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,107 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,937 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,086 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,880 |
| Slavic Countries | 0 | - | 4.96 | 111,536 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,207 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,794 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,517 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,034 |
| Geography of Spain | 0 | - | 4.59 | 22,059 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,120 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,243 |
| Champions League Winners | 0 | - | 4.92 | 1,004,828 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,302 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,984 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,729 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,331 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,038 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,577 |
| Monarchies of Europe | 0 | - | 4.90 | 98,004 |
| European Countries with One Border | 0 | - | 4.97 | 182,583 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,398 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,076 |
| Albania Country Quiz | 0 | - | 4.54 | 38,945 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,597 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,781 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,984 |
| History of Austria | 0 | - | 4.70 | 17,844 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,239 |
| Geography of the French Empire | 0 | - | 4.45 | 27,037 |
| The French Revolution | 0 | - | 4.46 | 23,916 |
| Countries Bordering France | 0 | - | 4.83 | 402,073 |
| History of France | 0 | - | 4.59 | 56,885 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,618 |
| States of Germany | 0 | - | 4.96 | 152,111 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,465 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,930 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,742 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,575 |
| Regions of Italy | 0 | - | 4.92 | 75,669 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,992 |
| The Vikings! | 0 | - | 4.46 | 28,330 |
| The Portuguese Empire | 0 | - | 4.58 | 12,053 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,742 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,091 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,899 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,316 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,353 |
| Geography of the British Empire | 0 | - | 4.48 | 39,638 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,667 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,119 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,676 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,174 |
| Name a Valid African Country | 0 | - | 4.98 | 153,864 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,266 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,690,852 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,594 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,631 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,993 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,853 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,066 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,306 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,373 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 28,795 |
| Russian History A-Z | 0 | - | 4.38 | 31,628 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,757 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,265 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,128 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,310 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,639 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,222 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,545 |
| Departments of France | 0 | - | 4.93 | 53,911 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,810 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,115 |
| Germany Country Quiz | 0 | - | 4.82 | 157,671 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,962 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,276 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,952 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,886 |
| Counties of Ireland | 0 | - | 4.92 | 194,861 |
| Italy Country Quiz | 0 | - | 4.82 | 123,268 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,185 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,863 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,782 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,271 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,816 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,528 |
| Byzantine History | 0 | - | 4.91 | 28,763 |
| History of The Netherlands | 0 | - | 4.46 | 17,418 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,749 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,467 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,739 |
| British Groups of Things | 0 | - | 4.25 | 82,843 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,026 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,329 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,327 |
| Medieval English History | 0 | - | 4.53 | 43,480 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,568 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,736 |
| England or Wales? | 0 | - | 4.94 | 45,625 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,009 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,810 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,636 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,844 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,361 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,640 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,972 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,325 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,193 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,647 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,650 |
| Which City in Europe? | 0 | - | 4.83 | 107,238 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,194 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,222 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,952 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,820 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,757 |
| French History Multiple Choice | 0 | - | 4.55 | 33,010 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,172 |
| History of Germany | 0 | - | 4.39 | 52,789 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,896 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,533 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,620 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,357 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,706 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,871 |
| Roman Names for Places | 0 | - | 4.62 | 58,212 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,320 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,440 |
| History of Spain | 0 | - | 4.23 | 21,072 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,818 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,643 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,006 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,431 |
| British Geography Quiz #1 | 0 | - | 4.51 | 48,326 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,742 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,751 |
