| Croatia Country Quiz | 0 | - | 4.83 | 42,791 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,489 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,599 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,776 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,539 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,391 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,971 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,774 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,297 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,242 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 69,993 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,910 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,610 |
| Countries That Border Russia | 0 | - | 4.98 | 458,543 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,483 |
| Europe Map Quiz | 0 | - | 5.00 | 4,727,463 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,960 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,581 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,908 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,947 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,222 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 273,974 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,909 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,286 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,036 |
| Russia Country Quiz | 0 | - | 4.85 | 113,562 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 34,999 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,098 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,855 |
| Countries that Border Poland | 0 | - | 4.99 | 171,212 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,333 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,604 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,650 |
| Name the English Monarchs | 0 | - | 4.92 | 497,383 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,858 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,583 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,516 |
| The Trojan War | 0 | - | 4.83 | 39,394 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,193 |
| Name that Greek Letter | 0 | - | 4.94 | 321,439 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,348 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,977 |
| Roman Emperors | 0 | - | 4.95 | 118,286 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,595 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,845 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,737 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,068 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,369 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,340 |
| The Only European Country ... | 0 | - | 4.91 | 213,502 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,324 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,831 |
| Olympian Gods Quiz | 0 | - | 4.96 | 494,757 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,056 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,280 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,163 |
| History of Russia Quiz | 0 | - | 4.49 | 31,771 |
| Ancient Greek Words | 0 | - | 4.92 | 110,543 |
| History of Italy | 0 | - | 4.55 | 31,800 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,464 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,960 |
| Counties of England | 0 | - | 4.97 | 788,364 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,356 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,039 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,173 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,785 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,582 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,196 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,042 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,404 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,566 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,541 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,145 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,071 |
| Slavic Countries | 0 | - | 4.96 | 110,771 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,768 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,506 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,082 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,343 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,112 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,546 |
| Geography of Spain | 0 | - | 4.59 | 21,940 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,861 |
| Champions League Winners | 0 | - | 4.92 | 995,099 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,300 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,299 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,138 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,263 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,265 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,960 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,217 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,657 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,650 |
| Monarchies of Europe | 0 | - | 4.90 | 97,212 |
| European Countries with One Border | 0 | - | 4.97 | 181,459 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 177,972 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,125 |
| Albania Country Quiz | 0 | - | 4.54 | 38,607 |
| Russian Inventions | 0 | - | 4.39 | 12,887 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,810 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,263 |
| Hungary Country Quiz | 0 | - | 4.49 | 42,980 |
| Romania Country Quiz | 0 | - | 4.63 | 53,301 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,099 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,741 |
| History of Austria | 0 | - | 4.70 | 17,734 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,003 |
| Geography of the French Empire | 0 | - | 4.48 | 26,912 |
| The French Revolution | 0 | - | 4.46 | 23,746 |
| Countries Bordering France | 0 | - | 4.85 | 396,496 |
| History of France | 0 | - | 4.59 | 55,879 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,562 |
| States of Germany | 0 | - | 4.96 | 149,783 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,370 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,910 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,700 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,679 |
| Regions of Italy | 0 | - | 4.92 | 74,600 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,736 |
| The Vikings! | 0 | - | 4.45 | 28,234 |
| The Portuguese Empire | 0 | - | 4.54 | 11,980 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,138 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,053 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,840 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,154 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,700 |
| Geography of the British Empire | 0 | - | 4.48 | 39,460 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,392 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,251 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,712 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 90,975 |
| Name a Valid African Country | 0 | - | 4.98 | 152,815 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,968 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,171 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,454 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,024 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,648,714 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,127 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,168 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,032 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,754 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,777 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,741 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 28,533 |
| Russian History A-Z | 0 | - | 4.38 | 30,341 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,153 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,726 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,652 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,058 |
| Departments of France | 0 | - | 4.93 | 52,667 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,465 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,755 |
| Germany Country Quiz | 0 | - | 4.82 | 156,404 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,056 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,044 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,739 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,749 |
| Counties of Ireland | 0 | - | 4.92 | 192,804 |
| Italy Country Quiz | 0 | - | 4.82 | 122,077 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,254 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 150,983 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,365 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,908 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,167 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,342 |
| Byzantine History | 0 | - | 4.91 | 28,583 |
| History of The Netherlands | 0 | - | 4.46 | 17,297 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,871 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,521 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,133 |
| British Groups of Things | 0 | - | 4.25 | 82,656 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,940 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,108 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,432 |
| Medieval English History | 0 | - | 4.53 | 43,292 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,605 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,698 |
| England or Wales? | 0 | - | 4.94 | 45,282 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,294 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,557 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,440 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,936 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,105 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,389 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,405 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,782 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,079 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,813 |
| Which City in Europe? | 0 | - | 4.83 | 106,549 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,722 |
| Slovenia Country Quiz | 0 | - | 4.52 | 30,439 |
| Poland Country Quiz | 0 | - | 4.22 | 62,598 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,398 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,635 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,510 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,202 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,354 |
| French History Multiple Choice | 0 | - | 4.55 | 32,855 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,260 |
