| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,536 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,226 |
| Name the English Monarchs | 0 | - | 4.91 | 505,276 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,219 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,366 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,329 |
| British History A-Z #1 | 0 | - | 4.45 | 46,967 |
| Monarchies of Europe | 0 | - | 4.90 | 98,614 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,056 |
| Countries That Border Russia | 0 | - | 4.98 | 463,853 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,867 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,633 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,002 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,573 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,009 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,681 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,006 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,828 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,344 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,561 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,247 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,987 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,183 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,586 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,534 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,065 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,372 |
| Russia Country Quiz | 0 | - | 4.83 | 115,124 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,554 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,683 |
| Countries that Border Poland | 0 | - | 4.99 | 172,921 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,898 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,209 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,254 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,111 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,226 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,303 |
| The Trojan War | 0 | - | 4.83 | 39,928 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,535 |
| Name that Greek Letter | 0 | - | 4.93 | 324,625 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,653 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,460 |
| Roman Emperors | 0 | - | 4.95 | 120,849 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,228 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,674 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,760 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,072 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,878 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,574 |
| European Geography By Letter - I | 0 | - | 4.09 | 96,274 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,913 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,324 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,395 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,687 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,690 |
| European Geography A-Z | 0 | - | 4.29 | 49,429 |
| The Only European Country ... | 0 | - | 4.91 | 218,280 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,109 |
| Russia A-Z | 0 | - | 4.46 | 27,295 |
| German History A-Z | 0 | - | 4.49 | 24,818 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,897 |
| History of The Netherlands | 0 | - | 4.46 | 17,526 |
| British History A-Z #2 | 0 | - | 4.24 | 10,320 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,646 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,538 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,381 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,450 |
| History of Russia Quiz | 0 | - | 4.47 | 31,983 |
| Ancient Greek Words | 0 | - | 4.93 | 112,212 |
| History of Italy | 0 | - | 4.55 | 32,106 |
| Italian History A-Z | 0 | - | 4.21 | 17,853 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,778 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,375 |
| Spanish History A-Z | 0 | - | 4.37 | 19,443 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,603 |
| Counties of England | 0 | - | 4.97 | 801,088 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,038 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,903 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,868 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,967 |
| India A-Z | 0 | - | 4.42 | 34,243 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,264 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,812 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,165 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,593 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,126 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,130 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,823 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,910 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,627 |
| Slavic Countries | 0 | - | 4.96 | 112,160 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,964 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,404 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,377 |
| British Geography A-Z | 0 | - | 4.42 | 19,588 |
| London A-Z | 0 | - | 4.10 | 40,852 |
| Champions League Winners | 0 | - | 4.92 | 1,012,829 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,357 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,951 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,577 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,097 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,563 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,225 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,176 |
| Countries that Start with A | 0 | - | 4.98 | 2,171,507 |
| Countries that Start with B | 0 | - | 4.95 | 2,302,580 |
| Countries that Start with C | 0 | - | 4.96 | 1,828,457 |
| Countries that Start with D | 0 | - | 4.96 | 714,267 |
| Countries that Start with E | 0 | - | 4.95 | 1,382,540 |
| Countries that Start with G | 0 | - | 4.97 | 1,508,853 |
| Countries that Start with H | 0 | - | 4.96 | 608,028 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,590 |
| Countries that Start with J | 0 | - | 4.98 | 605,516 |
| Countries that Start with K | 0 | - | 4.97 | 819,191 |
| Countries that Start with L | 0 | - | 4.98 | 1,094,844 |
| Countries that Start with N | 0 | - | 4.93 | 1,121,882 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,172 |
| Countries that Start with S | 0 | - | 4.98 | 1,760,538 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,396 |
| Countries that Start with U | 0 | - | 4.97 | 907,312 |
| Countries that Start with V | 0 | - | 4.98 | 611,146 |
| Countries that Start with F | 0 | - | 4.83 | 620,119 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,183 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,577 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,301 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,218 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,170 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,590 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,263 |
| European Countries with One Border | 0 | - | 4.97 | 183,476 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,222 |
| Albania Country Quiz | 0 | - | 4.54 | 39,177 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,830 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,310 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,156 |
| History of Austria | 0 | - | 4.70 | 17,949 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,329 |
| Geography of the French Empire | 0 | - | 4.45 | 27,193 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| Countries Bordering France | 0 | - | 4.83 | 404,309 |
| Kings of France Quiz | 0 | - | 4.20 | 32,874 |
| History of France | 0 | - | 4.61 | 57,456 |
| French History A-Z | 0 | - | 4.27 | 24,986 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,510 |
| States of Germany | 0 | - | 4.95 | 153,933 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,539 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,510 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,494 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,292 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,314 |
| Regions of Italy | 0 | - | 4.92 | 76,657 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,639 |
| The Vikings! | 0 | - | 4.46 | 28,388 |
| The Portuguese Empire | 0 | - | 4.58 | 12,094 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,981 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,592 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,359 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,435 |
| English Royal Consorts | 0 | - | 4.38 | 37,478 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,099 |
| Geography of the British Empire | 0 | - | 4.48 | 39,812 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,804 |
| Monarchies of Asia | 0 | - | 4.97 | 71,373 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,169 |
| Battle to Country | 0 | - | 4.91 | 53,743 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,693 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,868 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,604 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,816 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,248 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,036 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,117 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,283 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,621 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,767 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,220 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,583 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,124 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,608 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,875 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,502 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,005 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,870 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,827 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,495 |
| Departments of France | 0 | - | 4.93 | 54,835 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,063 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,380 |
| Germany Country Quiz | 0 | - | 4.83 | 158,552 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,881 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,032 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,166 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,999 |
| Counties of Ireland | 0 | - | 4.92 | 196,780 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,001 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,860 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,151 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,018 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,694 |
| Byzantine History | 0 | - | 4.91 | 28,985 |
