| Pre-Euro Currencies | 0 | - | 4.44 | 52,450 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,357 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,853 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,521 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,336 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,271 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,796 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,582 |
| Official European Union Languages | 0 | - | 4.97 | 236,534 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,703 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,208 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,541 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,568 |
| People on Money by Country | 0 | - | 4.84 | 59,981 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,240 |
| Celtic Nations | 0 | - | 4.69 | 46,812 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,831 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,895 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,048 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,937 |
| World Currency Quiz | 0 | - | 4.92 | 298,483 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,416 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,916 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,865 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,721 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,224 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,906 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,679 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,633 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,029 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,314 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,605 |
| Famous Germans | 0 | - | 4.50 | 54,619 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,522 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,335 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,218 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,148 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,009 |
| States of Germany | 0 | - | 4.96 | 150,058 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,017 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| Regions of Italy | 0 | - | 4.92 | 74,729 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,816 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,355 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,185 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,226 |
| People on Money - England | 0 | - | 4.29 | 16,564 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,407 |
| Champions League Winners | 0 | - | 4.92 | 996,379 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,003 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,549 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,211 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,176 |
| Departments of France | 0 | - | 4.93 | 52,829 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,369 |
| England or Wales? | 0 | - | 4.94 | 45,318 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,501 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,224 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,670 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,910 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,285 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,498 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,177 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,926 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,300 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,516 |
| European Geography A-Z | 0 | - | 4.28 | 49,004 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,599 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,992 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,052 |
| Slavic Languages | 0 | - | 4.67 | 53,986 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,429 |
| The Mafia Quiz | 0 | - | 4.46 | 23,206 |
| History of The Netherlands | 0 | - | 4.46 | 17,311 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,247 |
| Currencies by $ymbol | 0 | - | 4.56 | 33,227 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,131 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,841 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,514 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,555 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,962 |
| France A-Z | 0 | - | 4.16 | 38,057 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,946 |
| Name that Greek Letter | 0 | - | 4.94 | 321,675 |
| Switzerland A-Z | 0 | - | 4.45 | 25,508 |
| Africa A-Z | 0 | - | 4.57 | 46,372 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,538 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,136 |
| Famous Russians | 0 | - | 4.16 | 23,728 |
| History of Russia Quiz | 0 | - | 4.49 | 31,794 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,565 |
| Famous French People | 0 | - | 4.12 | 27,949 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,603 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,460 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,984 |
| The Trojan War | 0 | - | 4.83 | 39,428 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,540 |
| Famous Irish People | 0 | - | 4.05 | 45,855 |
| History of Italy | 0 | - | 4.55 | 31,817 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,166 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,050 |
| Roman Emperors | 0 | - | 4.95 | 118,494 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,482 |
| Famous Nordic People | 0 | - | 4.34 | 19,857 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,545 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,982 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,463 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,329 |
| London A-Z | 0 | - | 4.10 | 40,638 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 34,244 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,106 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,903 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,745 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,463 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,992 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,618 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,945 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,985 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,150 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,612 |
| Capitals of French Regions | 0 | - | 4.45 | 15,986 |
| Regions of France | 0 | - | 4.78 | 119,259 |
| France Immigration by Country | 0 | - | 4.72 | 75,967 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Capitals of German States | 0 | - | 4.74 | 28,812 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,096 |
| Germany True or False? | 0 | - | 4.61 | 48,535 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,465 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,166 |
| Ancient Greek Words | 0 | - | 4.92 | 110,704 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,294 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,828 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,045 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,964 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,262 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,106 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,345 |
| Famous Scottish People | 0 | - | 4.22 | 18,326 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,833 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,396 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,165 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,567 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,078 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,718 |
| Middle East A-Z | 0 | - | 4.47 | 45,789 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,807 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,367 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,329 |
| Canada A-Z | 0 | - | 4.73 | 32,650 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| Geography of Russia | 0 | - | 4.57 | 21,428 |
| Russian History A-Z | 0 | - | 4.38 | 30,836 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,776 |
| History of Austria | 0 | - | 4.70 | 17,748 |
| Geography of the French Empire | 0 | - | 4.48 | 26,934 |
| The French Revolution | 0 | - | 4.46 | 23,785 |
| France Multiple Choice | 0 | - | 4.38 | 40,635 |
| History of France | 0 | - | 4.59 | 56,056 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,384 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,557 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,617 |
| The Vikings! | 0 | - | 4.46 | 28,246 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,700 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| American to British Word Translation | 0 | - | 4.06 | 117,060 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,703 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,394 |
| Champions League Top 4 | 0 | - | 4.77 | 133,818 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,513 |
| Asia Map Quiz | 0 | - | 4.99 | 907,054 |
| A Quiz About Islam | 0 | - | 4.31 | 48,209 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,445 |
| Countries of Africa | 0 | - | 5.00 | 2,507,997 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,818 |
| African East Coast | 0 | - | 4.96 | 95,056 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,927 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,800 |
| Australia Map Quiz | 0 | - | 4.94 | 342,488 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,537 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,079 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,100 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,929 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,214 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,154 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,210 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,999 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,311 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,396 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,565 |
| Country Codes of Europe | 0 | - | 3.46 | 13,653 |
| The Only European Country ... | 0 | - | 4.91 | 213,840 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,545 |
| Austria... or Australia? | 0 | - | 4.68 | 103,871 |
| Presidents of France | 0 | - | 4.25 | 23,903 |
| Word Chain - France | 0 | - | 4.38 | 42,583 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,779 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,771 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,958 |
| Italian Foods | 0 | - | 4.31 | 72,191 |
