| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,201,908 |
| Country Quiz on a Map - France | 0 | - | 4.97 | 39,847 |
| French Geography Quiz #1 | 0 | - | 4.86 | 31,385 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.87 | 89,963 |
| Africa Geography Quiz #1 | 0 | - | 4.92 | 46,432 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 135,254 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 64,080 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 50,637 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 59,829 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 47,229 |
| Federal Subjects of Russia | 0 | - | 4.95 | 115,401 |
| Countries That Border Russia | 0 | - | 4.98 | 429,867 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,944 |
| Country Quiz on a Map - Germany | 0 | - | 4.93 | 27,715 |
| Europe Map Quiz | 0 | - | 5.00 | 4,336,196 |
| Europe Geography Quiz #1 | 0 | - | 4.53 | 67,501 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 67,968 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 66,648 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 58,229 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 203,821 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 249,586 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 145,229 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 191,802 |
| Name a Valid European Country #2 | 0 | - | 4.93 | 85,475 |
| Russia Country Quiz | 0 | - | 4.84 | 104,515 |
| Croatia Country Quiz | 0 | - | 4.81 | 37,925 |
| English Monarchs Quiz | 0 | - | 4.91 | 452,056 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.72 | 54,271 |
| Category Elimination - European Countries #1 | 0 | - | 4.88 | 77,706 |
| Countries that Border Poland | 0 | - | 4.99 | 159,952 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.92 | 76,616 |
| Ukraine Country Quiz | 0 | - | 4.41 | 42,890 |
| Countries that Border Hungary | 0 | - | 4.98 | 97,178 |
| Countries Bordering Serbia | 0 | - | 4.95 | 84,007 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.81 | 10,195 |
| Countries that Beat Portugal | 0 | - | 4.84 | 36,203 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 391,015 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.81 | 31,377 |
| Moldova Country Quiz | 0 | - | 4.86 | 27,684 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 590,072 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.81 | 86,759 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 72,188 |
| Roman Emperors | 0 | - | 4.95 | 97,102 |
| Countries That Use the Euro | 0 | - | 4.93 | 65,201 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 338,670 |
| Europe Geography Quiz #3 | 0 | - | 4.32 | 60,341 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 94,564 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 39,237 |
| The Only European Country ... | 0 | - | 4.93 | 181,825 |
| Latvia Country Quiz | 0 | - | 4.84 | 28,854 |
| Olympian Gods Quiz | 0 | - | 4.96 | 460,065 |
| Name that Greek Letter | 0 | - | 4.94 | 297,820 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 32,619 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 75,102 |
| Counties of England | 0 | - | 4.97 | 700,111 |
| Invasions of Great Britain | 0 | - | 4.49 | 55,957 |
| British History Quiz for Dummies | 0 | - | 4.54 | 62,230 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,060,174 |
| Countries that Beat Russia | 0 | - | 4.65 | 52,051 |
| Ancient Greek Words | 0 | - | 4.90 | 98,977 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 403,201 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 49,368 |
| Geography of Spain | 0 | - | 4.52 | 20,499 |
| Foods in a Full English Breakfast | 0 | - | 4.42 | 74,347 |
| Champions League Winners | 0 | - | 4.91 | 879,390 |
| Asia Geography Quiz #1 | 0 | - | 4.79 | 51,198 |
| Asia Geography Quiz #2 | 0 | - | 4.63 | 45,718 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 179,488 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 139,756 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 189,342 |
| European Landmarks Map Quiz | 0 | - | 4.98 | 78,201 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 287,948 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 118,472 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 75,953 |
| Eastern Europe Map Quiz | 0 | - | 4.90 | 116,614 |
| Slavic Countries | 0 | - | 4.96 | 101,319 |
| Most Mentioned Allies of Russia | 0 | - | 4.47 | 34,627 |
| Most Mentioned Enemies of Russia | 0 | - | 4.70 | 83,273 |
| French Geography Quiz #2 | 0 | - | 4.62 | 21,496 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 32,442 |
| The Vikings! | 0 | - | 4.45 | 27,252 |
| The Portuguese Empire | 0 | - | 4.54 | 11,393 |
| Regions of Spain Quiz | 0 | - | 4.87 | 96,620 |
| Cantons of Switzerland | 0 | - | 4.97 | 41,086 |
| Countries and Territories of the United Kingdom | 0 | - | 4.88 | 84,600 |
| Wives of King Henry VIII | 0 | - | 4.55 | 51,359 |
| Countries the UK Declared War On | 0 | - | 4.58 | 113,406 |
| Geography of the British Empire | 0 | - | 4.51 | 37,329 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 278,769 |
| Asian Countries with the Shortest Names | 0 | - | 4.98 | 122,817 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 101,778 |
| European Diaspora - Top 11 Countries | 0 | - | 4.89 | 84,935 |
| 10 European Countries with the Most Tourists | 0 | - | 4.97 | 122,694 |
| Three Band Flags of Europe | 0 | - | 4.97 | 162,989 |
| Pixelated Europe Map | 0 | - | 4.90 | 110,557 |
| Monarchies of Europe | 0 | - | 4.88 | 87,824 |
| European Countries with One Border | 0 | - | 4.96 | 152,105 |
| European Countries with the Fewest Borders | 0 | - | 4.98 | 145,757 |
| Albania Country Quiz | 0 | - | 4.52 | 34,803 |
| History of Russia Quiz | 0 | - | 4.48 | 30,057 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 38,338 |
| Hungary Country Quiz | 0 | - | 4.48 | 38,544 |
| Romania Country Quiz | 0 | - | 4.64 | 48,440 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 102,840 |
| Serbia Country Quiz | 0 | - | 4.42 | 31,952 |
| History of Austria | 0 | - | 4.69 | 16,518 |
| Regions of France Map Quiz | 0 | - | 4.96 | 128,769 |
| France Immigration by Country | 0 | - | 4.81 | 69,825 |
| Geography of the French Empire | 0 | - | 4.49 | 25,571 |
| The French Revolution | 0 | - | 4.45 | 22,089 |
| Countries Bordering France | 0 | - | 4.87 | 360,370 |
| History of France Quiz | 0 | - | 4.55 | 39,947 |
| States of Germany Map Quiz | 0 | - | 4.92 | 121,632 |
| States of Germany | 0 | - | 4.93 | 126,135 |
| Germany Immigration by Country | 0 | - | 4.90 | 70,842 |
| Countries Bordering Germany | 0 | - | 4.99 | 343,347 |
| Figures from Greek Mythology | 0 | - | 4.92 | 170,490 |
| Counties of Ireland | 0 | - | 4.90 | 162,348 |
| History of Ireland Quiz | 0 | - | 4.44 | 19,110 |
| Regions of Italy | 0 | - | 4.89 | 61,557 |
| History of Italy | 0 | - | 4.49 | 29,975 |
| Byzantine History | 0 | - | 4.87 | 26,451 |
| History of The Netherlands | 0 | - | 4.43 | 15,901 |
| Spain Cities Map Quiz | 0 | - | 4.86 | 87,279 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 171,020 |
| Countries Closest to Spain | 0 | - | 4.95 | 207,856 |
| British Groups of Things | 0 | - | 4.26 | 80,636 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,851 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 101,709 |
| Counties of the UK and Ireland | 0 | - | 4.97 | 106,804 |
| Medieval English History | 0 | - | 4.52 | 41,131 |
| World Capitals Closest to London | 0 | - | 4.91 | 94,254 |
| 50 Busiest Air Routes from London | 0 | - | 4.88 | 87,227 |
| England or Wales? | 0 | - | 4.93 | 40,782 |
| All Champions League Teams Ever | 0 | - | 4.90 | 107,121 |
| Asia Geography Quiz #3 | 0 | - | 4.51 | 30,852 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.91 | 94,335 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 83,650 |
| Name a Valid Asian Country | 0 | - | 4.98 | 93,328 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 94,794 |
| Africa Geography Quiz #2 | 0 | - | 4.58 | 31,315 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 80,722 |
| Name a Valid African Country | 0 | - | 4.98 | 125,822 |
| Oceania Geography Quiz | 0 | - | 4.54 | 20,965 |
| South American Geography Quiz #2 | 0 | - | 4.65 | 37,254 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.93 | 148,671 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,209,341 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 159,469 |
| Top 10 Coldest European Countries | 0 | - | 4.95 | 182,321 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 116,600 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 66,578 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 129,295 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 57,179 |
| Topological Map of Mainland Europe | 0 | - | 4.36 | 23,799 |
| Russian History A-Z | 0 | - | 4.35 | 17,571 |
| Countries With the Most Russian Speakers | 0 | - | 4.95 | 57,257 |
| Countries Bordering Austria | 0 | - | 4.97 | 110,861 |
| France Cities Map Quiz | 0 | - | 4.96 | 149,846 |
| Countries that Visit France the Most | 0 | - | 4.81 | 40,357 |
| Countries Closest to Metropolitan France | 0 | - | 4.87 | 66,790 |
| Germany Country Quiz | 0 | - | 4.82 | 141,964 |
| Germany Cities Map Quiz | 0 | - | 4.84 | 107,283 |
| Countries With the Most German Speakers | 0 | - | 4.88 | 53,155 |
| Ancient Greek Trivia | 0 | - | 4.55 | 63,738 |
| Italy Country Quiz | 0 | - | 4.81 | 110,569 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 135,409 |
| Italy Cities Map Quiz | 0 | - | 4.96 | 139,230 |
| Countries Bordering Italy | 0 | - | 4.95 | 95,390 |
| Countries Italy Declared War On | 0 | - | 4.76 | 40,299 |
| Countries Closest to Italy | 0 | - | 4.97 | 181,166 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,887 |
| Roman Names for Places | 0 | - | 4.66 | 42,044 |
| Countries that Beat the Netherlands | 0 | - | 4.58 | 33,769 |
| Greenland Country Quiz | 0 | - | 4.81 | 32,760 |
| Countries Closest to Iceland | 0 | - | 4.87 | 63,709 |
| History of Spain Quiz | 0 | - | 4.33 | 19,687 |
| Geography of the Spanish Empire | 0 | - | 4.48 | 35,406 |
| Countries that Beat Spain | 0 | - | 4.95 | 56,403 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 66,120 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 91,051 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 24,847 |
| British History A-Z | 0 | - | 4.47 | 39,920 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.76 | 19,108 |
| People Buried at Westminster Abbey | 0 | - | 4.66 | 13,375 |
| Houses of British Monarchs | 0 | - | 4.50 | 52,628 |
| English First Names of the Middle Ages | 0 | - | 4.41 | 45,825 |
| British History Multiple Choice #1 | 0 | - | 4.47 | 51,920 |
| Prime Ministers of the UK | 0 | - | 4.95 | 385,419 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 353,412 |
| Topological Map of Africa Quiz | 0 | - | 4.65 | 16,927 |
| Countries that Beat the United States | 0 | - | 4.92 | 147,399 |
| U.S. History for Dummies | 0 | - | 4.50 | 66,018 |
| Countries that Beat Canada | 0 | - | 4.91 | 78,915 |
| Top 20 Football Clubs in Europe | 0 | - | 4.50 | 89,172 |
| European Countries NOT in NATO | 0 | - | 4.79 | 36,021 |
| Which City in Europe? | 0 | - | 4.84 | 98,439 |
| Slovenia Country Quiz | 0 | - | 4.51 | 27,620 |
| Poland Country Quiz | 0 | - | 4.20 | 56,735 |
| Slovakia Country Quiz | 0 | - | 4.61 | 27,481 |
| Bulgaria Country Quiz | 0 | - | 4.72 | 27,835 |
