| Croatia Country Quiz | 0 | - | 4.83 | 43,580 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,987 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,876 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,303 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,525 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,384 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,303 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,995 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,399 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,390 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,529 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,315 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,559 |
| Countries That Border Russia | 0 | - | 4.98 | 463,681 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,466 |
| Europe Map Quiz | 0 | - | 5.00 | 4,777,992 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,427 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,083 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,380 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,348 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,870 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,980 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,212 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,250 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,461 |
| Russia Country Quiz | 0 | - | 4.83 | 115,020 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,482 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,667 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,690 |
| Countries that Border Poland | 0 | - | 4.99 | 172,850 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,092 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,852 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,844 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,660 |
| Name the English Monarchs | 0 | - | 4.91 | 504,976 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,942 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,970 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,943 |
| The Trojan War | 0 | - | 4.83 | 39,904 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,216 |
| Name that Greek Letter | 0 | - | 4.93 | 324,515 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,561 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,401 |
| Roman Emperors | 0 | - | 4.95 | 120,738 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,675 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,320 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,113 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,550 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,812 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,546 |
| The Only European Country ... | 0 | - | 4.91 | 218,085 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,037 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,649 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,672 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,962 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,105 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,252,302 |
| History of Russia Quiz | 0 | - | 4.47 | 31,977 |
| Ancient Greek Words | 0 | - | 4.93 | 112,156 |
| History of Italy | 0 | - | 4.55 | 32,099 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,763 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,361 |
| Counties of England | 0 | - | 4.97 | 800,642 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,022 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,871 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,603 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,209 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,770 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,023 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,553 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,940 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,511 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,840 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,577 |
| Slavic Countries | 0 | - | 4.96 | 112,106 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,121 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,222 |
| Russian History A-Z | 0 | - | 4.35 | 31,959 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,305 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,857 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,732 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,379 |
| Geography of Spain | 0 | - | 4.59 | 22,139 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,588 |
| Champions League Winners | 0 | - | 4.92 | 1,012,215 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,604 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,669 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,323 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,039 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,451 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,389 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,254 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,131 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,064 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,199 |
| Monarchies of Europe | 0 | - | 4.90 | 98,547 |
| European Countries with One Border | 0 | - | 4.97 | 183,404 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,171 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,934 |
| Albania Country Quiz | 0 | - | 4.54 | 39,153 |
| Russian Inventions | 0 | - | 4.39 | 12,994 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,366 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,894 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,647 |
| Romania Country Quiz | 0 | - | 4.63 | 53,998 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,279 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,144 |
| History of Austria | 0 | - | 4.70 | 17,944 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,091 |
| Geography of the French Empire | 0 | - | 4.45 | 27,187 |
| The French Revolution | 0 | - | 4.47 | 24,098 |
| Countries Bordering France | 0 | - | 4.83 | 404,147 |
| History of France | 0 | - | 4.61 | 57,421 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,445 |
| States of Germany | 0 | - | 4.95 | 153,820 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,533 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,467 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,176 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,901 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,182 |
| Regions of Italy | 0 | - | 4.92 | 76,548 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,592 |
| The Vikings! | 0 | - | 4.46 | 28,386 |
| The Portuguese Empire | 0 | - | 4.58 | 12,090 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,865 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,540 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,309 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,429 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,062 |
| Geography of the British Empire | 0 | - | 4.48 | 39,800 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,792 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,798 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,111 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,796 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,169 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,716,014 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,483 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,536 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,472 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,265 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,597 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,723 |
| European Geographic Groups of Four | 0 | - | 4.60 | 19,140 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 28,969 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,050 |
| Lithuania Country Quiz | 0 | - | 4.63 | 31,720 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,145 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,854 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,786 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,438 |
| Departments of France | 0 | - | 4.93 | 54,750 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,044 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,360 |
| Germany Country Quiz | 0 | - | 4.83 | 158,489 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,840 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,891 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,158 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,986 |
| Counties of Ireland | 0 | - | 4.92 | 196,637 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,923 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,801 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,125 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,529 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,872 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,672 |
| Byzantine History | 0 | - | 4.91 | 28,970 |
| Byzantine Emperors | 0 | - | 4.92 | 14,467 |
| History of The Netherlands | 0 | - | 4.46 | 17,512 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,268 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,497 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,670 |
| British Groups of Things | 0 | - | 4.25 | 82,957 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,079 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,318 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,733 |
| Medieval English History | 0 | - | 4.53 | 43,611 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,916 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,131 |
| England or Wales? | 0 | - | 4.94 | 45,869 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,466 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,641 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,354 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,445 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,270 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,836 |
| Name a Valid African Country | 0 | - | 4.98 | 154,655 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,198 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,285 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,740 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,295 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,695 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,115 |
| Which City in Europe? | 0 | - | 4.83 | 107,726 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,525 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,851 |
| Poland Country Quiz | 0 | - | 4.20 | 63,557 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,809 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 31,002 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,797 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,434 |
