| French Geography Quiz #1 | 0 | - | 4.89 | 34,507 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,491 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,865 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,579 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,442 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,993 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,901 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,386 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,350 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,077 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,987 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,922 |
| Countries That Border Russia | 0 | - | 4.98 | 458,825 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,513 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,284 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,980 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,606 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,935 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,970 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,449 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,152 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,113 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,657 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,199 |
| Russia Country Quiz | 0 | - | 4.85 | 113,618 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,834 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,025 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,130 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,943 |
| Countries that Border Poland | 0 | - | 4.99 | 171,315 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,362 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,676 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,719 |
| Name the English Monarchs | 0 | - | 4.92 | 497,772 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,097 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,603 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,533 |
| The Trojan War | 0 | - | 4.83 | 39,422 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,729 |
| Name that Greek Letter | 0 | - | 4.94 | 321,604 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,500 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,034 |
| Roman Emperors | 0 | - | 4.95 | 118,427 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,654 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,877 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,919 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,256 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,388 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,493 |
| The Only European Country ... | 0 | - | 4.91 | 213,745 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,474 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,888 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,836 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,228 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,332 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,034 |
| History of Russia Quiz | 0 | - | 4.49 | 31,788 |
| Ancient Greek Words | 0 | - | 4.92 | 110,652 |
| History of Italy | 0 | - | 4.55 | 31,811 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,477 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,976 |
| Counties of England | 0 | - | 4.97 | 788,972 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,379 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,081 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,732 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,800 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,680 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,261 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,258 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,449 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,768 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,802 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,223 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,168 |
| Slavic Countries | 0 | - | 4.96 | 110,829 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,789 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,551 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,093 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,423 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,430 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,608 |
| Geography of Spain | 0 | - | 4.59 | 21,959 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,930 |
| Champions League Winners | 0 | - | 4.92 | 996,039 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,321 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,316 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,145 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,316 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,312 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,025 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,336 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,813 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,771 |
| Monarchies of Europe | 0 | - | 4.90 | 97,291 |
| European Countries with One Border | 0 | - | 4.97 | 181,583 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,492 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,207 |
| Albania Country Quiz | 0 | - | 4.54 | 38,632 |
| Russian Inventions | 0 | - | 4.39 | 12,889 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,845 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,301 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,014 |
| Romania Country Quiz | 0 | - | 4.63 | 53,332 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,168 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,758 |
| History of Austria | 0 | - | 4.70 | 17,743 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,090 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,776 |
| Countries Bordering France | 0 | - | 4.83 | 398,694 |
| History of France | 0 | - | 4.59 | 55,992 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,664 |
| States of Germany | 0 | - | 4.96 | 149,984 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,382 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,994 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,963 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,881 |
| Regions of Italy | 0 | - | 4.92 | 74,675 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,786 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| The Portuguese Empire | 0 | - | 4.54 | 11,988 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,284 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,125 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,887 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,167 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,755 |
| Geography of the British Empire | 0 | - | 4.48 | 39,467 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,402 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,326 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,839 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,075 |
| Name a Valid African Country | 0 | - | 4.98 | 152,909 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,977 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,187 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,467 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,120 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,876 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,220 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,220 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,097 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,781 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,828 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,778 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 28,561 |
| Russian History A-Z | 0 | - | 4.38 | 30,742 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,378 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,760 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,753 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,149 |
| Departments of France | 0 | - | 4.93 | 52,771 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,512 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,788 |
| Germany Country Quiz | 0 | - | 4.82 | 156,493 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,122 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,247 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,764 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,765 |
| Counties of Ireland | 0 | - | 4.92 | 192,985 |
| Italy Country Quiz | 0 | - | 4.82 | 122,160 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,330 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,037 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,430 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,935 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,273 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,357 |
| Byzantine History | 0 | - | 4.91 | 28,610 |
| History of The Netherlands | 0 | - | 4.46 | 17,306 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,935 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,613 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,248 |
| British Groups of Things | 0 | - | 4.25 | 82,667 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,944 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,221 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,558 |
| Medieval English History | 0 | - | 4.53 | 43,312 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,699 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,747 |
| England or Wales? | 0 | - | 4.94 | 45,306 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,435 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,685 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,530 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,024 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,126 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,528 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,464 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,837 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,089 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,597 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,983 |
| Which City in Europe? | 0 | - | 4.83 | 106,601 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,765 |
| Slovenia Country Quiz | 0 | - | 4.52 | 30,465 |
| Poland Country Quiz | 0 | - | 4.22 | 62,656 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,419 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,656 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,530 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,217 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,379 |
| French History Multiple Choice | 0 | - | 4.55 | 32,869 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,337 |
