| Croatia Country Quiz | 0 | - | 4.83 | 42,817 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,503 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,256 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,835 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,567 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,428 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,988 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,855 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,349 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,310 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,048 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,957 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,786 |
| Countries That Border Russia | 0 | - | 4.98 | 458,724 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,501 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,296 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,976 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,599 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,926 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,963 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,370 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,066 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,042 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,515 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,135 |
| Russia Country Quiz | 0 | - | 4.85 | 113,597 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,015 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,119 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,915 |
| Countries that Border Poland | 0 | - | 4.99 | 171,283 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,351 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,657 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,692 |
| Name the English Monarchs | 0 | - | 4.92 | 497,648 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,004 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,594 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,525 |
| The Trojan War | 0 | - | 4.83 | 39,413 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,520 |
| Name that Greek Letter | 0 | - | 4.94 | 321,512 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,462 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,015 |
| Roman Emperors | 0 | - | 4.95 | 118,372 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,630 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,869 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,854 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,194 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,384 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,438 |
| The Only European Country ... | 0 | - | 4.91 | 213,650 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,427 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,865 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,499 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,159 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,315 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,382 |
| History of Russia Quiz | 0 | - | 4.49 | 31,782 |
| Ancient Greek Words | 0 | - | 4.92 | 110,619 |
| History of Italy | 0 | - | 4.55 | 31,806 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,470 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,972 |
| Counties of England | 0 | - | 4.97 | 788,750 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,372 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,066 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,551 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,794 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,649 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,245 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,177 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,430 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,681 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,718 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,201 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,147 |
| Slavic Countries | 0 | - | 4.96 | 110,808 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,783 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,535 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,086 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,391 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,315 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,589 |
| Geography of Spain | 0 | - | 4.59 | 21,948 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,907 |
| Champions League Winners | 0 | - | 4.92 | 995,700 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,313 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,312 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,143 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,297 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,293 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,993 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,295 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,773 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,738 |
| Monarchies of Europe | 0 | - | 4.90 | 97,263 |
| European Countries with One Border | 0 | - | 4.97 | 181,538 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,297 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,172 |
| Albania Country Quiz | 0 | - | 4.54 | 38,624 |
| Russian Inventions | 0 | - | 4.39 | 12,889 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,837 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,289 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,002 |
| Romania Country Quiz | 0 | - | 4.63 | 53,318 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,136 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,755 |
| History of Austria | 0 | - | 4.70 | 17,742 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,054 |
| Geography of the French Empire | 0 | - | 4.48 | 26,920 |
| The French Revolution | 0 | - | 4.46 | 23,768 |
| Countries Bordering France | 0 | - | 4.85 | 398,218 |
| History of France | 0 | - | 4.59 | 55,954 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,632 |
| States of Germany | 0 | - | 4.96 | 149,907 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,379 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,971 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,883 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,801 |
| Regions of Italy | 0 | - | 4.92 | 74,640 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,773 |
| The Vikings! | 0 | - | 4.45 | 28,237 |
| The Portuguese Empire | 0 | - | 4.54 | 11,984 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,217 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,088 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,871 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,162 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,734 |
| Geography of the British Empire | 0 | - | 4.48 | 39,466 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,399 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,298 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,783 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,034 |
| Name a Valid African Country | 0 | - | 4.98 | 152,875 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,973 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,183 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,461 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,091 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,651,358 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,186 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,199 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,076 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,772 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,806 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,769 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 28,548 |
| Russian History A-Z | 0 | - | 4.38 | 30,653 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,308 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,755 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,732 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,122 |
| Departments of France | 0 | - | 4.93 | 52,740 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,496 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,776 |
| Germany Country Quiz | 0 | - | 4.82 | 156,469 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,085 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,168 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,754 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,763 |
| Counties of Ireland | 0 | - | 4.92 | 192,933 |
| Italy Country Quiz | 0 | - | 4.82 | 122,137 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,314 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,022 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,409 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,925 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,233 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,353 |
| Byzantine History | 0 | - | 4.91 | 28,598 |
| History of The Netherlands | 0 | - | 4.46 | 17,304 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,918 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,572 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,208 |
| British Groups of Things | 0 | - | 4.25 | 82,662 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,942 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,177 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,520 |
| Medieval English History | 0 | - | 4.53 | 43,304 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,665 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,729 |
| England or Wales? | 0 | - | 4.94 | 45,293 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,392 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,641 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,503 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,000 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,120 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,474 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,440 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,817 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,084 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,919 |
| Which City in Europe? | 0 | - | 4.83 | 106,583 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,750 |
| Slovenia Country Quiz | 0 | - | 4.52 | 30,455 |
| Poland Country Quiz | 0 | - | 4.22 | 62,639 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,411 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,651 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,522 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,211 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,369 |
| French History Multiple Choice | 0 | - | 4.55 | 32,863 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,312 |
