| Pre-Euro Currencies | 0 | - | 4.44 | 52,644 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,547 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,534 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,552 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,150 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,293 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,318 |
| Official European Union Languages | 0 | - | 4.97 | 238,905 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,125 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,010 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,106 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,914 |
| People on Money by Country | 0 | - | 4.83 | 60,510 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,429 |
| Celtic Nations | 0 | - | 4.69 | 46,996 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,212 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,967 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,470 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,192 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,124 |
| World Currency Quiz | 0 | - | 4.92 | 304,178 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,914 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,324 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,711 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,262 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,952 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,271 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,899 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,173 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,981 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,257 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,804 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,859 |
| Famous Germans | 0 | - | 4.50 | 55,525 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,774 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,747 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,383 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,575 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,988 |
| States of Germany | 0 | - | 4.95 | 153,161 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,277 |
| Regions of Italy | 0 | - | 4.92 | 76,227 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,418 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,375 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,414 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,152 |
| People on Money - England | 0 | - | 4.29 | 16,623 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,752 |
| Champions League Winners | 0 | - | 4.92 | 1,009,788 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,692 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,892 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,356 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,612 |
| Departments of France | 0 | - | 4.93 | 54,453 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,612 |
| England or Wales? | 0 | - | 4.94 | 45,794 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,982 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,212 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,574 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,425 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,117 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,863 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,495 |
| European Geography By Letter - O | 0 | - | 4.29 | 62,982 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,123 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,412 |
| European Geography A-Z | 0 | - | 4.29 | 49,361 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,674 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,870 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,586 |
| Slavic Languages | 0 | - | 4.67 | 54,463 |
| Famous French People | 0 | - | 4.07 | 35,845 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,664 |
| The Mafia Quiz | 0 | - | 4.46 | 23,369 |
| History of The Netherlands | 0 | - | 4.46 | 17,481 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,515 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,940 |
| Currencies by $ymbol | 0 | - | 4.56 | 33,453 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,653 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,631 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,851 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,644 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,085 |
| France A-Z | 0 | - | 4.16 | 38,264 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,842 |
| Name that Greek Letter | 0 | - | 4.93 | 324,157 |
| Switzerland A-Z | 0 | - | 4.45 | 25,687 |
| Africa A-Z | 0 | - | 4.57 | 46,679 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,588 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,341 |
| Famous Russians | 0 | - | 4.16 | 23,865 |
| History of Russia Quiz | 0 | - | 4.47 | 31,949 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,773 |
| Russian History A-Z | 0 | - | 4.35 | 31,857 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,357 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,196 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,175 |
| The Trojan War | 0 | - | 4.83 | 39,797 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,235 |
| Famous Irish People | 0 | - | 4.05 | 46,022 |
| History of Italy | 0 | - | 4.55 | 32,053 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,950 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,646 |
| Roman Emperors | 0 | - | 4.95 | 120,384 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,719 |
| Famous Nordic People | 0 | - | 4.34 | 20,166 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,622 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,295 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,544 |
| London A-Z | 0 | - | 4.10 | 40,814 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 42,202 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,682 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,319,660 |
| Australian Capitals | 0 | - | 4.92 | 62,753 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,288 |
| Europe Map Quiz | 0 | - | 5.00 | 4,770,793 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,352 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,009 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,299 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,291 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,544 |
| Capitals of French Regions | 0 | - | 4.45 | 16,108 |
| Regions of France | 0 | - | 4.72 | 121,222 |
| France Immigration by Country | 0 | - | 4.70 | 76,678 |
| German Groups of Things | 0 | - | 4.46 | 38,523 |
| Capitals of German States | 0 | - | 4.74 | 28,990 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,399 |
| Germany True or False? | 0 | - | 4.61 | 48,891 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,137 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,852 |
| Ancient Greek Words | 0 | - | 4.93 | 111,898 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,498 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,494 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,338 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,438 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,490 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,985 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,071 |
| Famous Scottish People | 0 | - | 4.22 | 18,411 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,255 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,830 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,495 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,006 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,463 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,128 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,027 |
| Middle East A-Z | 0 | - | 4.47 | 46,143 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,625 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,636 |
| Oceania Map Quiz | 0 | - | 4.98 | 650,083 |
| Canada A-Z | 0 | - | 4.73 | 32,887 |
| European Physical Geography | 0 | - | 4.26 | 33,541 |
| Geography of Russia | 0 | - | 4.57 | 21,555 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,014 |
| History of Austria | 0 | - | 4.70 | 17,902 |
| Geography of the French Empire | 0 | - | 4.45 | 27,155 |
| The French Revolution | 0 | - | 4.47 | 24,062 |
| France Multiple Choice | 0 | - | 4.39 | 40,772 |
| History of France | 0 | - | 4.59 | 57,267 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,975 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,276 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,209 |
| The Portuguese Empire | 0 | - | 4.58 | 12,082 |
| American to British Word Translation | 0 | - | 4.14 | 139,302 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,944 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,717 |
| Champions League Top 4 | 0 | - | 4.77 | 137,270 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,685 |
| Asia Map Quiz | 0 | - | 4.99 | 919,556 |
| A Quiz About Islam | 0 | - | 4.31 | 48,500 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,945 |
| Countries of Africa | 0 | - | 5.00 | 2,544,714 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,098 |
| African East Coast | 0 | - | 4.96 | 96,278 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,139 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,898 |
| Australia Map Quiz | 0 | - | 4.95 | 345,123 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,581 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,995 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,519 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,452 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,010 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,785 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,738 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,554 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,019 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,748 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,664 |
| Country Codes of Europe | 0 | - | 3.43 | 13,747 |
| The Only European Country ... | 0 | - | 4.91 | 217,373 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,569 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,297 |
| Austria... or Australia? | 0 | - | 4.68 | 104,499 |
| Presidents of France | 0 | - | 4.25 | 24,204 |
| Word Chain - France | 0 | - | 4.38 | 42,840 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,073 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,839 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,699 |
