| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,211 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,151 |
| Slavic Countries | 0 | - | 4.96 | 110,815 |
| History of Russia Quiz | 0 | - | 4.49 | 31,784 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,750 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,871 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,368 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,331 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,062 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,971 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,863 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,149 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,508 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,124 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,826 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,018 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,050 |
| Name the English Monarchs | 0 | - | 4.92 | 497,706 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,356 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,667 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,598 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,526 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,882 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,213 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,456 |
| The Only European Country ... | 0 | - | 4.91 | 213,691 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,446 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,619 |
| Name that Greek Letter | 0 | - | 4.94 | 321,542 |
| The Trojan War | 0 | - | 4.83 | 39,419 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,481 |
| History of Italy | 0 | - | 4.55 | 31,807 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,021 |
| Roman Emperors | 0 | - | 4.95 | 118,405 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,476 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,974 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,375 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,658 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,362 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,666 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,255 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,217 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,443 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,707 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,747 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,880 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,190 |
| Counties of England | 0 | - | 4.97 | 788,863 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,624 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,783 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,541 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,687 |
| Ancient Greek Words | 0 | - | 4.92 | 110,633 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,299 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,007 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,308 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,789 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,749 |
| Monarchies of Europe | 0 | - | 4.90 | 97,275 |
| European Countries with One Border | 0 | - | 4.97 | 181,556 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,424 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,182 |
| Geography of Russia | 0 | - | 4.57 | 21,424 |
| Russian Inventions | 0 | - | 4.39 | 12,889 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,839 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,294 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,006 |
| Romania Country Quiz | 0 | - | 4.63 | 53,325 |
| History of Austria | 0 | - | 4.70 | 17,742 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,064 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,771 |
| History of France | 0 | - | 4.59 | 55,970 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,642 |
| States of Germany | 0 | - | 4.96 | 149,946 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,380 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,987 |
| Regions of Italy | 0 | - | 4.92 | 74,654 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,596 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,779 |
| The Vikings! | 0 | - | 4.45 | 28,237 |
| The Portuguese Empire | 0 | - | 4.54 | 11,986 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,259 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,098 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,876 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,164 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,739 |
| Geography of the British Empire | 0 | - | 4.48 | 39,467 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,400 |
| Champions League Winners | 0 | - | 4.92 | 995,851 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,818 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,207 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,084 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,412 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,094 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,082 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,572 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,161 |
| Russia Country Quiz | 0 | - | 4.85 | 113,604 |
| Countries That Border Russia | 0 | - | 4.98 | 458,780 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,133 |
| Departments of France | 0 | - | 4.93 | 52,749 |
| Countries Bordering France | 0 | - | 4.85 | 398,481 |
| Germany Country Quiz | 0 | - | 4.82 | 156,478 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,102 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,912 |
| Italy Country Quiz | 0 | - | 4.82 | 122,146 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,320 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,029 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,354 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,360 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,924 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,592 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,198 |
| England or Wales? | 0 | - | 4.94 | 45,302 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,410 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,216 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,597 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,944 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,760 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,757 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,759 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,765 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,840 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,929 |
| History of The Netherlands | 0 | - | 4.46 | 17,305 |
| Medieval English History | 0 | - | 4.53 | 43,306 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,141 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,202 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,088 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,776 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,818 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,772 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,928 |
| Slovenia Country Quiz | 0 | - | 4.52 | 30,462 |
| Countries that Border Poland | 0 | - | 4.99 | 171,296 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,229 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,341 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,413 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,651 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,525 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,213 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,705 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,507 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,372 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,744 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,499 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,782 |
| French History Multiple Choice | 0 | - | 4.55 | 32,866 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,194 |
| History of Germany | 0 | - | 4.39 | 52,609 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,862 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,421 |
| Counties of Ireland | 0 | - | 4.92 | 192,969 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,421 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,252 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,524 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,656 |
| Roman Names for Places | 0 | - | 4.62 | 57,859 |
| Byzantine History | 0 | - | 4.91 | 28,604 |
| History of Spain | 0 | - | 4.29 | 20,996 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,015 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,223 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,535 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,685 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,071 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,289 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,948 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,825 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,441 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,680 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,740 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 396,972 |
| Malta Country Quiz | 0 | - | 4.81 | 30,818 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,447 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,925 |
| European Cities Beginning with B - Click Map | 0 | - | 4.75 | 77,321 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,072 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,308 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,850 |
| Lithuania Country Quiz | 0 | - | 4.60 | 31,348 |
| Estonia Country Quiz | 0 | - | 4.60 | 30,848 |
| French Inventions | 0 | - | 4.08 | 13,863 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,572 |
| History of Paris | 0 | - | 4.24 | 13,612 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,322 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,436 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,980 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,035 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,846 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,811 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,641 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,439 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,809 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,106 |
| British History A-Z #1 | 0 | - | 4.45 | 45,790 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,306 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,072 |
| History of Scotland | 0 | - | 4.51 | 20,997 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,049 |
