| French Geography Quiz #1 | 0 | - | 4.89 | 34,507 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,421 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,859 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,574 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,438 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,992 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,878 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,378 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,337 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,063 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,974 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,884 |
| Countries That Border Russia | 0 | - | 4.98 | 458,802 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,509 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,950 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,979 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,606 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,932 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,969 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,426 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,136 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,090 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,607 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,171 |
| Russia Country Quiz | 0 | - | 4.85 | 113,606 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,827 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,018 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,125 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,934 |
| Countries that Border Poland | 0 | - | 4.99 | 171,304 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,359 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,671 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,713 |
| Name the English Monarchs | 0 | - | 4.92 | 497,736 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,069 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,602 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,529 |
| The Trojan War | 0 | - | 4.83 | 39,419 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,676 |
| Name that Greek Letter | 0 | - | 4.94 | 321,585 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,488 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,027 |
| Roman Emperors | 0 | - | 4.95 | 118,414 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,646 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,873 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,896 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,225 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,387 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,470 |
| The Only European Country ... | 0 | - | 4.91 | 213,713 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,457 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,884 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,749 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,201 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,327 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,824 |
| History of Russia Quiz | 0 | - | 4.49 | 31,784 |
| Ancient Greek Words | 0 | - | 4.92 | 110,637 |
| History of Italy | 0 | - | 4.55 | 31,809 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,476 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,974 |
| Counties of England | 0 | - | 4.97 | 788,903 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,376 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,074 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,661 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,799 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,671 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,256 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,230 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,447 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,740 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,761 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,216 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,154 |
| Slavic Countries | 0 | - | 4.96 | 110,820 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,784 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,543 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,091 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,413 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,401 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,599 |
| Geography of Spain | 0 | - | 4.59 | 21,954 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,917 |
| Champions League Winners | 0 | - | 4.92 | 995,914 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,319 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,316 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,145 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,308 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,304 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,017 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,318 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,802 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,757 |
| Monarchies of Europe | 0 | - | 4.90 | 97,281 |
| European Countries with One Border | 0 | - | 4.97 | 181,571 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,481 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,184 |
| Albania Country Quiz | 0 | - | 4.54 | 38,629 |
| Russian Inventions | 0 | - | 4.39 | 12,889 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,843 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,298 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,010 |
| Romania Country Quiz | 0 | - | 4.63 | 53,327 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,155 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,757 |
| History of Austria | 0 | - | 4.70 | 17,743 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,079 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,773 |
| Countries Bordering France | 0 | - | 4.83 | 398,570 |
| History of France | 0 | - | 4.59 | 55,976 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,645 |
| States of Germany | 0 | - | 4.96 | 149,952 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,381 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,990 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,933 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,857 |
| Regions of Italy | 0 | - | 4.92 | 74,657 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,785 |
| The Vikings! | 0 | - | 4.45 | 28,242 |
| The Portuguese Empire | 0 | - | 4.54 | 11,987 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,267 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,098 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,879 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,166 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,748 |
| Geography of the British Empire | 0 | - | 4.48 | 39,467 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,400 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,316 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,828 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,064 |
| Name a Valid African Country | 0 | - | 4.98 | 152,899 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,973 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,185 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,464 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,112 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,498 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,211 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,211 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,087 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,779 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,822 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,775 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 28,559 |
| Russian History A-Z | 0 | - | 4.38 | 30,721 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,350 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,758 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,749 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,139 |
| Departments of France | 0 | - | 4.93 | 52,749 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,505 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,783 |
| Germany Country Quiz | 0 | - | 4.82 | 156,483 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,109 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,217 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,761 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,765 |
| Counties of Ireland | 0 | - | 4.92 | 192,974 |
| Italy Country Quiz | 0 | - | 4.82 | 122,150 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,323 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,032 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,424 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,931 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,259 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,355 |
| Byzantine History | 0 | - | 4.91 | 28,608 |
| History of The Netherlands | 0 | - | 4.46 | 17,305 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,929 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,602 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,234 |
| British Groups of Things | 0 | - | 4.25 | 82,666 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,943 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,203 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,542 |
| Medieval English History | 0 | - | 4.53 | 43,307 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,687 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,742 |
| England or Wales? | 0 | - | 4.94 | 45,305 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,418 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,674 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,521 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,016 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,123 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,511 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,457 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,831 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,088 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,597 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,955 |
| Which City in Europe? | 0 | - | 4.83 | 106,595 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,762 |
| Slovenia Country Quiz | 0 | - | 4.52 | 30,464 |
| Poland Country Quiz | 0 | - | 4.22 | 62,654 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,417 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,655 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,528 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,213 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,374 |
| French History Multiple Choice | 0 | - | 4.55 | 32,867 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,330 |
