| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,357 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,255 |
| Slavic Countries | 0 | - | 4.96 | 111,720 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,055 |
| History of Russia Quiz | 0 | - | 4.47 | 31,925 |
| Europe Map Quiz | 0 | - | 5.00 | 4,764,833 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,467 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,305 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,769 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,088 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,958 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,476 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,944 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,511 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,377 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,359 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,371 |
| Name the English Monarchs | 0 | - | 4.91 | 503,025 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,877 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,265 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,885 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,827 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,166 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,601 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,356 |
| The Only European Country ... | 0 | - | 4.91 | 216,821 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,242 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,805 |
| Name that Greek Letter | 0 | - | 4.93 | 323,708 |
| The Trojan War | 0 | - | 4.83 | 39,749 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,942 |
| History of Italy | 0 | - | 4.55 | 31,989 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,560 |
| Roman Emperors | 0 | - | 4.95 | 120,131 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,675 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,247 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,888 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,245,104 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,198 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,733 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,254 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,867 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,208 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,717 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,097 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,438 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,118 |
| Counties of England | 0 | - | 4.97 | 797,414 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,388 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,024 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,037 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,094 |
| Ancient Greek Words | 0 | - | 4.93 | 111,685 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,905 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,616 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,420 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,810 |
| Monarchies of Europe | 0 | - | 4.90 | 98,188 |
| European Countries with One Border | 0 | - | 4.97 | 182,856 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,657 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,690 |
| Geography of Russia | 0 | - | 4.57 | 21,539 |
| Russian Inventions | 0 | - | 4.39 | 12,965 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,234 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,737 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,462 |
| Romania Country Quiz | 0 | - | 4.63 | 53,810 |
| History of Austria | 0 | - | 4.70 | 17,867 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,519 |
| Geography of the French Empire | 0 | - | 4.45 | 27,088 |
| The French Revolution | 0 | - | 4.47 | 23,975 |
| History of France | 0 | - | 4.59 | 57,052 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,903 |
| States of Germany | 0 | - | 4.95 | 152,750 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,104 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,322 |
| Regions of Italy | 0 | - | 4.92 | 75,988 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,176 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,242 |
| The Vikings! | 0 | - | 4.46 | 28,351 |
| The Portuguese Empire | 0 | - | 4.58 | 12,067 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,061 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,251 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,036 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,359 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,530 |
| Geography of the British Empire | 0 | - | 4.48 | 39,697 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,711 |
| Champions League Winners | 0 | - | 4.92 | 1,007,409 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,912 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,172 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,077 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,424 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,992 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,226 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,270 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,786 |
| Russia Country Quiz | 0 | - | 4.83 | 114,530 |
| Countries That Border Russia | 0 | - | 4.98 | 461,906 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,707 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,837 |
| Departments of France | 0 | - | 4.93 | 54,203 |
| Countries Bordering France | 0 | - | 4.83 | 402,699 |
| Germany Country Quiz | 0 | - | 4.83 | 157,939 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,407 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,555 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,463 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,114 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,560 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,336 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,976 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,731 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,704 |
| England or Wales? | 0 | - | 4.94 | 45,721 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,490 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,752 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,660 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,089 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,305 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,637 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,051 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,020 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,929 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,096 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,351 |
| History of The Netherlands | 0 | - | 4.46 | 17,442 |
| Medieval English History | 0 | - | 4.53 | 43,528 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,700,855 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,856 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,228 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,124 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,416 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,487 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,128 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,741 |
| Countries that Border Poland | 0 | - | 4.99 | 172,329 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,311 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,030 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,734 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,908 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,740 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,371 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,444 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,786 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,354 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,888 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,203 |
| French History Multiple Choice | 0 | - | 4.55 | 33,061 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,488 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,867 |
| History of Germany | 0 | - | 4.39 | 52,837 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,721 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,675 |
| Counties of Ireland | 0 | - | 4.92 | 195,484 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,889 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,118 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,759 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,949 |
| Roman Names for Places | 0 | - | 4.62 | 58,317 |
| Byzantine History | 0 | - | 4.91 | 28,876 |
| Byzantine Emperors | 0 | - | 4.92 | 14,216 |
| History of Spain | 0 | - | 4.23 | 21,095 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,183 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,078 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,918 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,754 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,808 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,161 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,691 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,169 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,975 |
| Prime Ministers of the UK | 0 | - | 4.95 | 439,290 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,696 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,878 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 401,669 |
| Malta Country Quiz | 0 | - | 4.81 | 31,074 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,312 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,473 |
| European Cities Beginning with B - Click Map | 0 | - | 4.78 | 78,229 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,145 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,734 |
| Russian History A-Z | 0 | - | 4.38 | 31,753 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,870 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,100 |
| French Inventions | 0 | - | 4.08 | 13,899 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,251 |
| History of Paris | 0 | - | 4.24 | 13,654 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,506 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,071 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,151 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,110 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,528 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,619 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,379 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,977 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,590 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,269 |
| British History A-Z #1 | 0 | - | 4.45 | 46,508 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,696 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,643 |
