| European Countries by First 2 Letters | 0 | - | 4.95 | 533,197 |
| History of Russia Quiz | 0 | - | 4.47 | 32,030 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,908 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,880 |
| Official European Union Languages | 0 | - | 4.97 | 240,419 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,862 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,499 |
| Geography of Russia | 0 | - | 4.57 | 21,624 |
| Slavic Languages | 0 | - | 4.67 | 54,794 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,406 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,117 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,539 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,161 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,292 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,648 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,411 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,944 |
| Slavic Countries | 0 | - | 4.96 | 112,538 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,768 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,526 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,908 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,171 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,928 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,837 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,195 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,221 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,999 |
| Word Chain - Russia | 0 | - | 4.33 | 15,808 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,612 |
| States of Germany | 0 | - | 4.95 | 155,006 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,840 |
| Regions of Italy | 0 | - | 4.92 | 77,298 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,942 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,647 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,917 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,876 |
| Champions League Winners | 0 | - | 4.92 | 1,018,405 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,809 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,478 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,408 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,450 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,406 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,361 |
| Departments of France | 0 | - | 4.93 | 55,444 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,764 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,790 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,670 |
| England or Wales? | 0 | - | 4.94 | 46,077 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,547 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,082 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,310 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,101 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,722 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,040 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,375 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,203 |
| Name that Greek Letter | 0 | - | 4.93 | 325,364 |
| History of Italy | 0 | - | 4.55 | 32,191 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,552 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,857 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,479 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,464 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,631 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,799 |
| Famous Russians | 0 | - | 4.16 | 23,933 |
| Capitals of French Regions | 0 | - | 4.45 | 16,216 |
| Capitals of German States | 0 | - | 4.74 | 29,099 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,600 |
| The Trojan War | 0 | - | 4.83 | 40,103 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,304 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,713 |
| Roman Emperors | 0 | - | 4.95 | 121,483 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,612 |
| Australian Capitals | 0 | - | 4.92 | 62,865 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,440 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,870 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,407 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,938 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,374 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,912 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,350 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,946 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,212 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,846 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,584 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,256 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,524 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,477 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,606 |
| Regions of France | 0 | - | 4.70 | 122,462 |
| France Immigration by Country | 0 | - | 4.70 | 77,030 |
| Famous Germans | 0 | - | 4.50 | 55,887 |
| German Groups of Things | 0 | - | 4.47 | 38,679 |
| Germany True or False? | 0 | - | 4.61 | 49,079 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,602 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,611 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,572 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,964 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,500 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,985 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,623 |
| Asia Map Quiz | 0 | - | 4.99 | 927,045 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,201 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,630 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,434 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,005 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,322 |
| European Physical Geography | 0 | - | 4.26 | 33,620 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,563 |
| Country Codes of Europe | 0 | - | 3.45 | 13,857 |
| The Only European Country ... | 0 | - | 4.91 | 219,699 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,888 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,172 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Presidents of France | 0 | - | 4.25 | 24,381 |
| Geography of the French Empire | 0 | - | 4.45 | 27,239 |
| The French Revolution | 0 | - | 4.47 | 24,172 |
| France Multiple Choice | 0 | - | 4.39 | 40,881 |
| History of France | 0 | - | 4.61 | 57,750 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,580 |
| Ancient Greek Words | 0 | - | 4.93 | 112,713 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,634 |
| The Vikings! | 0 | - | 4.46 | 28,427 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,449 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,138 |
| American to British Word Translation | 0 | - | 4.14 | 139,855 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,096 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,488 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,860 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,838 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,028 |
| Champions League Top 4 | 0 | - | 4.78 | 139,681 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,217 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,293 |
| African East Coast | 0 | - | 4.96 | 96,950 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,851 |
| Australia Map Quiz | 0 | - | 4.95 | 346,567 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,029 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,660 |
| European Geography By Letter - E | 0 | - | 4.23 | 119,431 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,757 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,425 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,225 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,771 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,420 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,780 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,722 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,956 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 52,029 |
| European Geography A-Z | 0 | - | 4.29 | 49,530 |
| Austria... or Australia? | 0 | - | 4.67 | 104,865 |
| Famous French People | 0 | - | 4.05 | 36,179 |
| Word Chain - France | 0 | - | 4.38 | 42,969 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,291 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,077 |
| Italian Foods | 0 | - | 4.30 | 73,414 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,459 |
| The Mafia Quiz | 0 | - | 4.46 | 23,454 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,560 |
| History of The Netherlands | 0 | - | 4.46 | 17,576 |
| Canary Islands | 0 | - | 4.62 | 17,550 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,179 |
| British Spellings | 0 | - | 4.06 | 99,637 |
| British Groups of Things | 0 | - | 4.26 | 83,046 |
| British Acronyms | 0 | - | 4.40 | 45,984 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,133 |
| British Monopoly Board | 0 | - | 4.52 | 41,296 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,230 |
| Geography of Scotland | 0 | - | 4.63 | 21,833 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,388,197 |
| Countries of Africa | 0 | - | 5.00 | 2,565,847 |
| Australian States and Territories | 0 | - | 4.96 | 143,107 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,555 |
| Australia True or False | 0 | - | 4.87 | 57,230 |
| Flags of North and South America | 0 | - | 4.99 | 378,361 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,095 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 145,013 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,905 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,811 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,793 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,788 |
| North America Map Quiz | 0 | - | 4.98 | 252,934 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,043 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,269 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,522 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,688 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,257 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,262,085 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,537 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,829 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,576 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,369 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,930 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,939 |
| Seas of Europe | 0 | - | 4.37 | 84,976 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,803 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,684 |
