| European Countries by First 2 Letters | 0 | - | 4.95 | 526,711 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,935 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,011 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,461 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,416 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,945 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,682 |
| Official European Union Languages | 0 | - | 4.97 | 237,156 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,023 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,619 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,473 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,589 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,604 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,258 |
| Celtic Nations | 0 | - | 4.69 | 46,836 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,153 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,519 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,085 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,700 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,496 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,980 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,941 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,794 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,300 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,052 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,845 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,691 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,071 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,396 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,657 |
| Famous Germans | 0 | - | 4.50 | 54,687 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,644 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,475 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,329 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,195 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,450 |
| States of Germany | 0 | - | 4.96 | 150,414 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,130 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,602 |
| Regions of Italy | 0 | - | 4.92 | 74,883 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,924 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,560 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,448 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,566 |
| Champions League Winners | 0 | - | 4.92 | 997,694 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,080 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,300 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,290 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,728 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,961 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,349 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,554 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,229 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,975 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,340 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,554 |
| European Geography A-Z | 0 | - | 4.28 | 49,038 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,611 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,071 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,300 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,855 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,485 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,417 |
| Slavic Languages | 0 | - | 4.67 | 54,039 |
| Departments of France | 0 | - | 4.93 | 52,979 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,452 |
| The Mafia Quiz | 0 | - | 4.46 | 23,216 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,397 |
| History of The Netherlands | 0 | - | 4.46 | 17,335 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,275 |
| England or Wales? | 0 | - | 4.94 | 45,384 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,717 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,722 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,922 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,550 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,311 |
| Africa A-Z | 0 | - | 4.57 | 46,407 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,269 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,199 |
| History of Russia Quiz | 0 | - | 4.49 | 31,804 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,595 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,562 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,971 |
| France A-Z | 0 | - | 4.16 | 38,084 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,806 |
| Name that Greek Letter | 0 | - | 4.94 | 321,921 |
| History of Italy | 0 | - | 4.55 | 31,850 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,265 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,503 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,011 |
| Switzerland A-Z | 0 | - | 4.45 | 25,531 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 34,652 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,306,554 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,704 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,222 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,669 |
| Famous Russians | 0 | - | 4.16 | 23,740 |
| Famous French People | 0 | - | 4.12 | 28,024 |
| Capitals of French Regions | 0 | - | 4.45 | 15,995 |
| Capitals of German States | 0 | - | 4.74 | 28,844 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,125 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,012 |
| The Trojan War | 0 | - | 4.83 | 39,475 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,743 |
| Famous Irish People | 0 | - | 4.05 | 45,872 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,124 |
| Roman Emperors | 0 | - | 4.95 | 118,659 |
| Famous Nordic People | 0 | - | 4.34 | 19,898 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,552 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,480 |
| People on Money - England | 0 | - | 4.29 | 16,571 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,387 |
| London A-Z | 0 | - | 4.10 | 40,665 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,099 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,275 |
| Australian Capitals | 0 | - | 4.92 | 62,608 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,811 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,026 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,662 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,985 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,023 |
| Regions of France | 0 | - | 4.78 | 119,480 |
| France Immigration by Country | 0 | - | 4.72 | 76,029 |
| German Groups of Things | 0 | - | 4.46 | 38,328 |
| Germany True or False? | 0 | - | 4.61 | 48,569 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,557 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,017 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,898 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,086 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,077 |
| Famous Scottish People | 0 | - | 4.22 | 18,336 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,880 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,436 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,202 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,608 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,115 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,959 |
| Asia Map Quiz | 0 | - | 4.99 | 908,130 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,760 |
| Middle East A-Z | 0 | - | 4.47 | 45,835 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,975 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,935 |
| African East Coast | 0 | - | 4.96 | 95,178 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,051 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,942 |
| Canada A-Z | 0 | - | 4.73 | 32,675 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,422 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,333 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,298 |
| European Physical Geography | 0 | - | 4.26 | 33,385 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,793 |
| Country Codes of Europe | 0 | - | 3.46 | 13,661 |
| The Only European Country ... | 0 | - | 4.91 | 214,226 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,800 |
| Geography of Russia | 0 | - | 4.57 | 21,441 |
| Russian History A-Z | 0 | - | 4.38 | 31,156 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,804 |
| History of Austria | 0 | - | 4.70 | 17,769 |
| Presidents of France | 0 | - | 4.25 | 23,930 |
| Geography of the French Empire | 0 | - | 4.45 | 26,956 |
| The French Revolution | 0 | - | 4.46 | 23,810 |
| France Multiple Choice | 0 | - | 4.38 | 40,650 |
| History of France | 0 | - | 4.59 | 56,251 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,399 |
| Ancient Greek Words | 0 | - | 4.92 | 110,828 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,677 |
| The Vikings! | 0 | - | 4.46 | 28,259 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,736 |
| The Portuguese Empire | 0 | - | 4.54 | 12,004 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,970 |
| American to British Word Translation | 0 | - | 4.12 | 136,189 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,748 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,414 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,383 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,473 |
| Champions League Top 4 | 0 | - | 4.77 | 134,143 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,639 |
| A Quiz About Islam | 0 | - | 4.31 | 48,241 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,503 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,380 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,928 |
| Countries with NO Military | 0 | - | 4.97 | 61,270 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 85,166 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,958 |
| Countries with the Densest Road Networks | 0 | - | 4.33 | 17,726 |
| Countries by Lamborghini Dealerships | 0 | - | 4.35 | 51,417 |
| Monarchies of the World | 0 | - | 4.94 | 166,875 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,828 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,075 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,577 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,722 |
| People on Money by Country | 0 | - | 4.83 | 60,037 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,984 |
| NATO Countries | 0 | - | 4.98 | 276,570 |
| EU Countries Quiz | 0 | - | 4.99 | 270,462 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,291 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,659 |
| Astronomy Quiz | 0 | - | 4.90 | 81,862 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.89 | 65,237 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,838 |
