| European Countries by First 2 Letters | 0 | - | 4.95 | 527,728 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,972 |
| History of Russia Quiz | 0 | - | 4.49 | 31,842 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,639 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,844 |
| Official European Union Languages | 0 | - | 4.97 | 237,635 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,302 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,516 |
| Geography of Russia | 0 | - | 4.57 | 21,476 |
| Slavic Languages | 0 | - | 4.68 | 54,148 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,739 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,665 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,314 |
| Celtic Nations | 0 | - | 4.69 | 46,871 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,091 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,271 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,422 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,721 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,515 |
| Slavic Countries | 0 | - | 4.96 | 111,238 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,194 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,736 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,430 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,610 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,576 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,293 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,673 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,317 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,250 |
| Word Chain - Russia | 0 | - | 4.33 | 15,722 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,521 |
| States of Germany | 0 | - | 4.96 | 151,038 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,408 |
| Regions of Italy | 0 | - | 4.92 | 75,185 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 46,333 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,154 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,720 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,617 |
| Champions League Winners | 0 | - | 4.92 | 1,000,554 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,507 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,267 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,814 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,727 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,692 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,058 |
| Departments of France | 0 | - | 4.93 | 53,289 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,519 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,432 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,340 |
| England or Wales? | 0 | - | 4.94 | 45,485 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,219 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,353 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,115 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,630 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,134 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,562 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,262 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,501 |
| Name that Greek Letter | 0 | - | 4.93 | 322,507 |
| History of Italy | 0 | - | 4.55 | 31,894 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,428 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,560 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,091 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,335 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,231 |
| Famous Russians | 0 | - | 4.16 | 23,769 |
| Capitals of French Regions | 0 | - | 4.45 | 16,016 |
| Capitals of German States | 0 | - | 4.74 | 28,891 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,198 |
| The Trojan War | 0 | - | 4.83 | 39,559 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,143 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,272 |
| Roman Emperors | 0 | - | 4.95 | 119,222 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,447 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,454 |
| Australian Capitals | 0 | - | 4.92 | 62,656 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,668 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,120 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,099 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,979 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,437 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,311 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,024 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,803 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,435 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,598 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,126 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,768 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,074 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,116 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,794 |
| Regions of France | 0 | - | 4.77 | 119,930 |
| France Immigration by Country | 0 | - | 4.72 | 76,184 |
| Famous Germans | 0 | - | 4.50 | 54,823 |
| German Groups of Things | 0 | - | 4.46 | 38,380 |
| Germany True or False? | 0 | - | 4.61 | 48,661 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,715 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,334 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,870 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,052 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,152 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,820 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,857 |
| Asia Map Quiz | 0 | - | 4.99 | 910,798 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,245 |
| African East Coast | 0 | - | 4.96 | 95,506 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,352 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,190 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,046 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,463 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,889 |
| European Physical Geography | 0 | - | 4.26 | 33,421 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,283 |
| Country Codes of Europe | 0 | - | 3.46 | 13,676 |
| The Only European Country ... | 0 | - | 4.91 | 215,079 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,284 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 27,883 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,850 |
| History of Austria | 0 | - | 4.70 | 17,797 |
| Presidents of France | 0 | - | 4.25 | 23,979 |
| Geography of the French Empire | 0 | - | 4.45 | 26,998 |
| The French Revolution | 0 | - | 4.46 | 23,859 |
| France Multiple Choice | 0 | - | 4.38 | 40,679 |
| History of France | 0 | - | 4.59 | 56,603 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Ancient Greek Words | 0 | - | 4.93 | 111,088 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,830 |
| The Vikings! | 0 | - | 4.46 | 28,285 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,847 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,992 |
| American to British Word Translation | 0 | - | 4.13 | 138,237 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,808 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,432 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,458 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,011 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,117 |
| Champions League Top 4 | 0 | - | 4.77 | 134,912 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 98,174 |
| Countries of Africa | 0 | - | 5.00 | 2,520,914 |
| Australia Map Quiz | 0 | - | 4.94 | 343,242 |
| United States Map Quiz | 0 | - | 4.98 | 4,148,233 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,180 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,425 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,846 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,091 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,712 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,671 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,356 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,084 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,425 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,520 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,648 |
| European Geography A-Z | 0 | - | 4.29 | 49,108 |
| Austria... or Australia? | 0 | - | 4.68 | 104,095 |
| Word Chain - France | 0 | - | 4.38 | 42,672 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,865 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,839 |
| Italian Foods | 0 | - | 4.31 | 72,443 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,138 |
| The Mafia Quiz | 0 | - | 4.46 | 23,251 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,093 |
| History of The Netherlands | 0 | - | 4.46 | 17,357 |
| Canary Islands | 0 | - | 4.61 | 17,436 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,371 |
| British Spellings | 0 | - | 4.06 | 99,351 |
| British Groups of Things | 0 | - | 4.25 | 82,776 |
| British Acronyms | 0 | - | 4.39 | 45,701 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,993 |
| British Monopoly Board | 0 | - | 4.52 | 41,096 |
| Geography of Scotland | 0 | - | 4.63 | 21,544 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,379,047 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,636 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,747 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,198 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,872 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,665 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,827 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,729 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,183 |
| African Island Countries | 0 | - | 4.96 | 101,137 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,609 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,965 |
| Australian States and Territories | 0 | - | 4.96 | 141,348 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,126 |
| Australia True or False | 0 | - | 4.87 | 56,667 |
| Flags of North and South America | 0 | - | 4.99 | 370,042 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,395 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,507 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,788 |
| South America Map Quiz | 0 | - | 5.00 | 1,544,408 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,017,087 |
| North America Map Quiz | 0 | - | 4.98 | 246,434 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,533 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,790 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,779 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,856 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,674 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,234,316 |
