| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,342 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,898 |
| Slavic Countries | 0 | - | 4.96 | 112,485 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,507 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,524 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,945 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,969 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,994 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,706 |
| History of Russia Quiz | 0 | - | 4.47 | 32,021 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,878 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,563 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,481 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,808 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,821 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,627 |
| Name the English Monarchs | 0 | - | 4.91 | 507,245 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,340 |
| Countries that Border Poland | 0 | - | 4.99 | 173,323 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,341 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,085 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,778 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,494 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,992 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,084 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,053 |
| The Trojan War | 0 | - | 4.83 | 40,042 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,763 |
| Name that Greek Letter | 0 | - | 4.93 | 325,206 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,138 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,671 |
| Roman Emperors | 0 | - | 4.95 | 121,390 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,159 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,519 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,438 |
| The Only European Country ... | 0 | - | 4.91 | 219,509 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,790 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,893 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,824 |
| History of Italy | 0 | - | 4.55 | 32,179 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,842 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,464 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,140 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,260,902 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,934 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,746 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,498 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,194 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,893 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,106 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,401 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,303 |
| Ancient Greek Words | 0 | - | 4.93 | 112,627 |
| Counties of England | 0 | - | 4.97 | 804,055 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,485 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 69,178 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,218 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,396 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,563 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,297 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,590 |
| Champions League Winners | 0 | - | 4.92 | 1,017,659 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,083 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,965 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,698 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,812 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,598 |
| Monarchies of Europe | 0 | - | 4.90 | 99,015 |
| European Countries with One Border | 0 | - | 4.97 | 183,998 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,707 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 89,052 |
| Geography of Russia | 0 | - | 4.57 | 21,615 |
| Countries That Border Russia | 0 | - | 4.98 | 464,846 |
| Russian Inventions | 0 | - | 4.39 | 13,028 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,501 |
| Ukraine Country Quiz | 0 | - | 4.43 | 48,040 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,827 |
| Romania Country Quiz | 0 | - | 4.63 | 54,199 |
| History of Austria | 0 | - | 4.70 | 17,991 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,787 |
| Geography of the French Empire | 0 | - | 4.45 | 27,229 |
| The French Revolution | 0 | - | 4.47 | 24,164 |
| Countries Bordering France | 0 | - | 4.83 | 405,286 |
| History of France | 0 | - | 4.61 | 57,712 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,956 |
| States of Germany | 0 | - | 4.95 | 154,886 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,573 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,791 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,178 |
| Regions of Italy | 0 | - | 4.92 | 77,237 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,898 |
| The Vikings! | 0 | - | 4.46 | 28,419 |
| The Portuguese Empire | 0 | - | 4.58 | 12,116 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,546 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,880 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,605 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,486 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,354 |
| Geography of the British Empire | 0 | - | 4.48 | 39,866 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,860 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,036 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,923 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,255 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,260 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,203 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,284 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,094 |
| Russia Country Quiz | 0 | - | 4.83 | 115,420 |
| Lithuania Country Quiz | 0 | - | 4.63 | 31,826 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,238 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,982 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,970 |
| Departments of France | 0 | - | 4.93 | 55,363 |
| Germany Country Quiz | 0 | - | 4.82 | 159,027 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,209 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,276 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,069 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,007 |
| Figures from Greek Mythology | 0 | - | 4.91 | 189,164 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,396 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,194 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,946 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,774 |
| Byzantine History | 0 | - | 4.91 | 29,040 |
| Byzantine Emperors | 0 | - | 4.93 | 14,652 |
| History of The Netherlands | 0 | - | 4.46 | 17,571 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,596 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,007 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,006 |
| Medieval English History | 0 | - | 4.53 | 43,684 |
| England or Wales? | 0 | - | 4.94 | 46,012 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,412 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,679 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,730,271 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,942 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,394 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,740 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,814 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,766 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,036 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,241 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,764 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,951 |
| Poland Country Quiz | 0 | - | 4.20 | 63,808 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,728 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,193 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,906 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 31,112 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,892 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,485 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,190 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,208 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,024 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,206 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,550 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,782 |
| French History Multiple Choice | 0 | - | 4.55 | 33,276 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,464 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 99,047 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,638 |
| History of Germany | 0 | - | 4.39 | 52,996 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,420 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,887 |
| Counties of Ireland | 0 | - | 4.92 | 197,625 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,347 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,265 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,610 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,369 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,257 |
| Roman Names for Places | 0 | - | 4.62 | 58,775 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,265 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,979 |
| History of Spain | 0 | - | 4.23 | 21,174 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,330 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,339 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,427 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,175 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,597 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,834 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,996 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,252 |
| Houses of British Monarchs | 0 | - | 4.54 | 66,008 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,348 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,101 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,032 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,125 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,384 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 407,883 |
| Malta Country Quiz | 0 | - | 4.81 | 31,255 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,357 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,974 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,894 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,987 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,370 |
| Russian History A-Z | 0 | - | 4.35 | 32,290 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,304 |
| French Inventions | 0 | - | 4.10 | 13,932 |
| History of Paris | 0 | - | 4.24 | 13,684 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,210 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,256 |
