| Pre-Euro Currencies | 0 | - | 4.44 | 52,711 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,917 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,910 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,033 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,593 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,327 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,760 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,600 |
| Official European Union Languages | 0 | - | 4.97 | 239,501 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,491 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,336 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,239 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,009 |
| People on Money by Country | 0 | - | 4.83 | 60,640 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,477 |
| Celtic Nations | 0 | - | 4.61 | 47,069 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,298 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,122 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,635 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,361 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,363 |
| World Currency Quiz | 0 | - | 4.92 | 305,905 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,706 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,087 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,116 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,095 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,750 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,097 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,871 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,388 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,602 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,303 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,221 |
| Famous Germans | 0 | - | 4.50 | 55,702 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,241 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,637 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,647 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,701 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,039 |
| States of Germany | 0 | - | 4.95 | 154,090 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,572 |
| Regions of Italy | 0 | - | 4.92 | 76,772 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,681 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,075 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,634 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,286 |
| People on Money - England | 0 | - | 4.29 | 16,637 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,816 |
| Champions League Winners | 0 | - | 4.92 | 1,013,836 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,895 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,238 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,528 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,517 |
| Departments of France | 0 | - | 4.93 | 54,910 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,712 |
| England or Wales? | 0 | - | 4.94 | 45,906 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,716 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,822 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,126 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,928 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,635 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,324 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,958 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,373 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,426 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,715 |
| European Geography A-Z | 0 | - | 4.29 | 49,444 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,708 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,168 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,344 |
| Slavic Languages | 0 | - | 4.67 | 54,628 |
| Famous French People | 0 | - | 4.07 | 36,020 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,710 |
| The Mafia Quiz | 0 | - | 4.46 | 23,414 |
| History of The Netherlands | 0 | - | 4.46 | 17,531 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,594 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,060 |
| Currencies by $ymbol | 0 | - | 4.56 | 33,542 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,777 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,820 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,022 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,659 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,122 |
| France A-Z | 0 | - | 4.16 | 38,313 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,899 |
| Name that Greek Letter | 0 | - | 4.93 | 324,732 |
| Switzerland A-Z | 0 | - | 4.45 | 25,745 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,676 |
| Famous Russians | 0 | - | 4.16 | 23,894 |
| History of Russia Quiz | 0 | - | 4.47 | 31,988 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,838 |
| Russian History A-Z | 0 | - | 4.35 | 32,124 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,601 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,464 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,218 |
| The Trojan War | 0 | - | 4.83 | 39,942 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,726 |
| Famous Irish People | 0 | - | 4.05 | 46,054 |
| History of Italy | 0 | - | 4.55 | 32,117 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,226 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,505 |
| Roman Emperors | 0 | - | 4.95 | 120,952 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,790 |
| Famous Nordic People | 0 | - | 4.34 | 20,256 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,635 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,396 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,568 |
| London A-Z | 0 | - | 4.10 | 40,863 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,887 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,362 |
| Africa A-Z | 0 | - | 4.57 | 46,745 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,088 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,323,560 |
| Australian Capitals | 0 | - | 4.92 | 62,810 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,439 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,777 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,460 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,116 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,412 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,379 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,449 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,667 |
| Capitals of French Regions | 0 | - | 4.45 | 16,157 |
| Regions of France | 0 | - | 4.70 | 121,804 |
| France Immigration by Country | 0 | - | 4.70 | 76,846 |
| German Groups of Things | 0 | - | 4.47 | 38,603 |
| Capitals of German States | 0 | - | 4.74 | 29,042 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,509 |
| Germany True or False? | 0 | - | 4.61 | 48,976 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,361 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,131 |
| Ancient Greek Words | 0 | - | 4.93 | 112,288 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,650 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,385 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,676 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,542 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,954 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,603 |
| Famous Scottish People | 0 | - | 4.22 | 18,428 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,376 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,972 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,597 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,117 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,587 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,246 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,204 |
| Middle East A-Z | 0 | - | 4.47 | 46,213 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,254 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,173 |
| Canada A-Z | 0 | - | 4.73 | 32,936 |
| European Physical Geography | 0 | - | 4.26 | 33,579 |
| Geography of Russia | 0 | - | 4.57 | 21,579 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,086 |
| History of Austria | 0 | - | 4.70 | 17,959 |
| Geography of the French Empire | 0 | - | 4.45 | 27,200 |
| The French Revolution | 0 | - | 4.47 | 24,120 |
| France Multiple Choice | 0 | - | 4.39 | 40,816 |
| History of France | 0 | - | 4.61 | 57,495 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,546 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,192 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,427 |
| The Vikings! | 0 | - | 4.46 | 28,396 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,325 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| American to British Word Translation | 0 | - | 4.14 | 139,567 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,028 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,775 |
| Champions League Top 4 | 0 | - | 4.77 | 138,399 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,297 |
| Asia Map Quiz | 0 | - | 4.99 | 923,473 |
| A Quiz About Islam | 0 | - | 4.32 | 48,572 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,092 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,459 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,315 |
| Australia Map Quiz | 0 | - | 4.95 | 345,856 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,831 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,269 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,593 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,344 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,127 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,543 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,853 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,382 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,819 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,835 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,806 |
| Country Codes of Europe | 0 | - | 3.43 | 13,793 |
| The Only European Country ... | 0 | - | 4.91 | 218,484 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,219 |
| European Geographic Groups of Four | 0 | - | 4.54 | 19,748 |
| Austria... or Australia? | 0 | - | 4.68 | 104,684 |
| Presidents of France | 0 | - | 4.25 | 24,307 |
| Word Chain - France | 0 | - | 4.38 | 42,905 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,185 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,012 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,932 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,458 |
| Italian Foods | 0 | - | 4.30 | 73,157 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,572 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,098 |
