| Federal Subjects of Russia | 0 | - | 4.95 | 149,227 |
| History of Russia Quiz | 0 | - | 4.47 | 31,994 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,203 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,056 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,701 |
| Slavic Countries | 0 | - | 4.96 | 112,277 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,389 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,201 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,064 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,634 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,723 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,477 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,402 |
| Europe Map Quiz | 0 | - | 5.00 | 4,783,919 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,162 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,287 |
| Countries That Border Russia | 0 | - | 4.98 | 464,221 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,289 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,065 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,719 |
| Russia Country Quiz | 0 | - | 4.83 | 115,229 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,687 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,549 |
| Name the English Monarchs | 0 | - | 4.91 | 505,883 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,521 |
| Geography of Russia | 0 | - | 4.57 | 21,587 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,954 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,574 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,322 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,801 |
| Russian Inventions | 0 | - | 4.39 | 13,010 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,016 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,002 |
| The Trojan War | 0 | - | 4.83 | 39,950 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,224 |
| Name that Greek Letter | 0 | - | 4.93 | 324,818 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,805 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,542 |
| Roman Emperors | 0 | - | 4.95 | 121,060 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,005 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,186 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,520 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,979 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,910 |
| The Only European Country ... | 0 | - | 4.91 | 218,658 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,341 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,758 |
| French History Multiple Choice | 0 | - | 4.55 | 33,202 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,814 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,311 |
| History of Italy | 0 | - | 4.55 | 32,128 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,799 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,408 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,066 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,925 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,255,705 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,547 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,388 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,935 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,483 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,690 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,444 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,337 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,359 |
| Ancient Greek Words | 0 | - | 4.93 | 112,344 |
| Counties of England | 0 | - | 4.97 | 802,040 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,861 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,772 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,155 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,430 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,469 |
| Champions League Winners | 0 | - | 4.92 | 1,014,709 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,622 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,406 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,360 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,403 |
| Which European Country - Multiple Choice | 0 | - | 4.51 | 84,562 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,373 |
| Monarchies of Europe | 0 | - | 4.90 | 98,755 |
| European Countries with One Border | 0 | - | 4.97 | 183,627 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,388 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,407 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,353 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,418 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,956 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,739 |
| Romania Country Quiz | 0 | - | 4.63 | 54,081 |
| History of Austria | 0 | - | 4.70 | 17,965 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,501 |
| Geography of the French Empire | 0 | - | 4.45 | 27,202 |
| The French Revolution | 0 | - | 4.47 | 24,130 |
| Countries Bordering France | 0 | - | 4.83 | 404,629 |
| History of France | 0 | - | 4.61 | 57,539 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,677 |
| States of Germany | 0 | - | 4.95 | 154,240 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,551 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,618 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,593 |
| Regions of Italy | 0 | - | 4.92 | 76,913 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,734 |
| The Vikings! | 0 | - | 4.46 | 28,398 |
| The Portuguese Empire | 0 | - | 4.58 | 12,097 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,160 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,676 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,454 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,446 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,176 |
| Geography of the British Empire | 0 | - | 4.48 | 39,830 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,822 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,772 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,690 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,471 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,680 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,660 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,190 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,748 |
| Lithuania Country Quiz | 0 | - | 4.63 | 31,777 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,180 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,902 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,678 |
| Departments of France | 0 | - | 4.93 | 54,971 |
| Germany Country Quiz | 0 | - | 4.82 | 158,713 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,986 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,203 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,023 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,941 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,599 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,126 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,951 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,606 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,721 |
| Byzantine History | 0 | - | 4.91 | 29,007 |
| Byzantine Emperors | 0 | - | 4.93 | 14,547 |
| History of The Netherlands | 0 | - | 4.46 | 17,539 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,400 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,749 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,607 |
| Medieval English History | 0 | - | 4.53 | 43,633 |
| England or Wales? | 0 | - | 4.94 | 45,926 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,857 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,415 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,722,085 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,662 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,114 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 22,278 |
| U.S. History Multiple Choice #4 | 0 | - | 4.24 | 25,655 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,319 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,585 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,318 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,713 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,680 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 118,549 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,861 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,934 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,617 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,887 |
| Countries that Border Poland | 0 | - | 4.99 | 173,060 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,497 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,551 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,853 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 31,052 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,840 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,459 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,992 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,038 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,888 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,109 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,427 |
| France True or False? | 0 | - | 4.44 | 40,054 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,643 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,211 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,367 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,504 |
| History of Germany | 0 | - | 4.39 | 52,964 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,225 |
| Counties of Ireland | 0 | - | 4.92 | 197,055 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,204 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,096 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,219 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,224 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,182 |
| Roman Names for Places | 0 | - | 4.62 | 58,657 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,054 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,795 |
| History of Spain | 0 | - | 4.23 | 21,155 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,298 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,959 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,286 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,179 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,815 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,934 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,233 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,913 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,853 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,012 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,242 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 405,121 |
| Malta Country Quiz | 0 | - | 4.81 | 31,216 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,147 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 78,702 |
