| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,111 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,727 |
| Slavic Countries | 0 | - | 4.96 | 112,316 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,413 |
| History of Russia Quiz | 0 | - | 4.47 | 31,999 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,868 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,285 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,195 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,681 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,775 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,513 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,342 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,430 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,735 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,712 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,561 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,663 |
| Name the English Monarchs | 0 | - | 4.91 | 506,109 |
| Countries that Border Poland | 0 | - | 4.99 | 173,105 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,231 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,976 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,030 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,016 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,833 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,634 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,094 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,997 |
| The Only European Country ... | 0 | - | 4.91 | 218,807 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,412 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,555 |
| Name that Greek Letter | 0 | - | 4.93 | 324,888 |
| The Trojan War | 0 | - | 4.83 | 39,966 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,872 |
| History of Italy | 0 | - | 4.55 | 32,138 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,561 |
| Roman Emperors | 0 | - | 4.95 | 121,102 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,810 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,413 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,081 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,256,778 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,096 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,436 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,983 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,601 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,723 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,560 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,511 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,786 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,429 |
| Counties of England | 0 | - | 4.97 | 802,374 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,238 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,172 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,307 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,545 |
| Ancient Greek Words | 0 | - | 4.93 | 112,401 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,672 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,439 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,418 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,486 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,418 |
| Monarchies of Europe | 0 | - | 4.90 | 98,801 |
| European Countries with One Border | 0 | - | 4.97 | 183,706 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,461 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,488 |
| Geography of Russia | 0 | - | 4.57 | 21,594 |
| Russian Inventions | 0 | - | 4.39 | 13,013 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,438 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,966 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,757 |
| Romania Country Quiz | 0 | - | 4.63 | 54,105 |
| History of Austria | 0 | - | 4.70 | 17,969 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,558 |
| Geography of the French Empire | 0 | - | 4.45 | 27,210 |
| The French Revolution | 0 | - | 4.47 | 24,138 |
| History of France | 0 | - | 4.61 | 57,570 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,744 |
| States of Germany | 0 | - | 4.95 | 154,338 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,556 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,653 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,243 |
| Regions of Italy | 0 | - | 4.92 | 76,969 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,487 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,763 |
| The Vikings! | 0 | - | 4.46 | 28,400 |
| The Portuguese Empire | 0 | - | 4.58 | 12,101 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,238 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,710 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,481 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,452 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,209 |
| Geography of the British Empire | 0 | - | 4.48 | 39,840 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,834 |
| Champions League Winners | 0 | - | 4.92 | 1,015,363 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,807 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,733 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,647 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,789 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,773 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,382 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,808 |
| Russia Country Quiz | 0 | - | 4.83 | 115,273 |
| Countries That Border Russia | 0 | - | 4.98 | 464,349 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,915 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,725 |
| Departments of France | 0 | - | 4.93 | 55,066 |
| Countries Bordering France | 0 | - | 4.83 | 404,739 |
| Germany Country Quiz | 0 | - | 4.82 | 158,769 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,028 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,685 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,155 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,985 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,727 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,585 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,420 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,795 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,668 |
| England or Wales? | 0 | - | 4.94 | 45,944 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,982 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,454 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,292 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,718 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 120,814 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,645 |
| Lithuania Country Quiz | 0 | - | 4.63 | 31,783 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,191 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,214 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,034 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,952 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,709 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,619 |
| History of The Netherlands | 0 | - | 4.46 | 17,545 |
| Medieval English History | 0 | - | 4.53 | 43,643 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,723,836 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,715 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,325 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,327 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,697 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,899 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,002 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,898 |
| Poland Country Quiz | 0 | - | 4.20 | 63,664 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,357 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,672 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,865 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 31,060 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,850 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,464 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,028 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,064 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,914 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,131 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,447 |
| French History Multiple Choice | 0 | - | 4.55 | 33,217 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,482 |
| History of Germany | 0 | - | 4.39 | 52,966 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,258 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,827 |
| Counties of Ireland | 0 | - | 4.92 | 197,193 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,225 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,304 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,254 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,195 |
| Roman Names for Places | 0 | - | 4.62 | 58,677 |
| Byzantine History | 0 | - | 4.91 | 29,013 |
| Byzantine Emperors | 0 | - | 4.93 | 14,574 |
| History of Spain | 0 | - | 4.23 | 21,163 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,305 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,034 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,273 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,823 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,945 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,237 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,927 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,299 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,079 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,070 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,031 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,265 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 406,055 |
| Malta Country Quiz | 0 | - | 4.81 | 31,227 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,747 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,786 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,462 |
| Russian History A-Z | 0 | - | 4.35 | 32,182 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,544 |
| Estonia Country Quiz | 0 | - | 4.60 | 31,250 |
| French Inventions | 0 | - | 4.10 | 13,923 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,668 |
| History of Paris | 0 | - | 4.24 | 13,681 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,258 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,525 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,232 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,160 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,134 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,100 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,836 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,316 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,039 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,361 |
| British History A-Z #1 | 0 | - | 4.45 | 47,208 |
