| European Countries by First 2 Letters | 0 | - | 4.95 | 533,116 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,538 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,496 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,196 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,872 |
| Official European Union Languages | 0 | - | 4.97 | 240,393 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,844 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,431 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,383 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,362 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,303 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,455 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,113 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,132 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,621 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,795 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,150 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,220 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,576 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,758 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,513 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,763 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,579 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,251 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,517 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,475 |
| German Groups of Things | 0 | - | 4.47 | 38,677 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,790 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,104 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,920 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,831 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,100 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,964 |
| States of Germany | 0 | - | 4.95 | 154,964 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,821 |
| Regions of Italy | 0 | - | 4.92 | 77,276 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,927 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,609 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,907 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,874 |
| Champions League Winners | 0 | - | 4.92 | 1,018,178 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,626 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 324,580 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,768 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,800 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,951 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,185 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,497 |
| Slavic Languages | 0 | - | 4.67 | 54,788 |
| Departments of France | 0 | - | 4.93 | 55,417 |
| Word Chain - France | 0 | - | 4.38 | 42,964 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,764 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,785 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,667 |
| British Groups of Things | 0 | - | 4.26 | 83,044 |
| England or Wales? | 0 | - | 4.94 | 46,061 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,507 |
| Word Scramble - Asian Countries | 0 | - | 4.48 | 109,397 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 276,990 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,570 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,943 |
| Word Chain - Africa | 0 | - | 4.47 | 31,739 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,614 |
| Christmas Decoder | 0 | - | 4.42 | 49,674 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,068 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,290 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,062 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,690 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,026 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,928 |
| History of Russia Quiz | 0 | - | 4.47 | 32,028 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,904 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,068 |
| Name that Greek Letter | 0 | - | 4.93 | 325,331 |
| History of Italy | 0 | - | 4.55 | 32,186 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,531 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,855 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,470 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,114 |
| Canada Decoder | 0 | - | 4.07 | 18,784 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,874 |
| Word Chain - Russia | 0 | - | 4.33 | 15,806 |
| Capitals of French Regions | 0 | - | 4.45 | 16,210 |
| Capitals of German States | 0 | - | 4.74 | 29,099 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,587 |
| Word Chain - Germany | 0 | - | 4.31 | 22,699 |
| The Trojan War | 0 | - | 4.83 | 40,089 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,259 |
| Word Chain - Italy | 0 | - | 4.07 | 23,231 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,704 |
| Roman Emperors | 0 | - | 4.95 | 121,458 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,504 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,424 |
| Name a Valid English City | 0 | - | 4.19 | 16,837 |
| Famous People from Africa | 0 | - | 4.45 | 11,015 |
| Four Letter African Geography | 0 | - | 4.68 | 19,869 |
| Halloween Decoder | 0 | - | 4.21 | 45,705 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,482 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,481 |
| Australian Capitals | 0 | - | 4.92 | 62,863 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 94,496 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,356 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,766 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,275 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,795 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,280 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,798 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,285 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,893 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,171 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,790 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,569 |
| Regions of France | 0 | - | 4.70 | 122,424 |
| France Immigration by Country | 0 | - | 4.70 | 77,017 |
| Famous Germans | 0 | - | 4.50 | 55,880 |
| Germany True or False? | 0 | - | 4.61 | 49,073 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,595 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,532 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,551 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,942 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,478 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,968 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,532 |
| Asia Map Quiz | 0 | - | 4.99 | 926,900 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,693 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,775 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,388 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,949 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,115 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,620 |
| Word Chain - Australia | 0 | - | 4.38 | 38,265 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,393 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,998 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,280 |
| European Physical Geography | 0 | - | 4.26 | 33,618 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,524 |
| Country Codes of Europe | 0 | - | 3.45 | 13,850 |
| The Only European Country ... | 0 | - | 4.91 | 219,646 |
| Word Scramble - European Cities | 0 | - | 3.84 | 18,983 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,860 |
| Geography of Russia | 0 | - | 4.57 | 21,623 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,168 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Presidents of France | 0 | - | 4.25 | 24,372 |
| Geography of the French Empire | 0 | - | 4.45 | 27,236 |
| The French Revolution | 0 | - | 4.47 | 24,169 |
| France Multiple Choice | 0 | - | 4.39 | 40,876 |
| History of France | 0 | - | 4.61 | 57,735 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,578 |
| Ancient Greek Words | 0 | - | 4.93 | 112,687 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,628 |
| The Vikings! | 0 | - | 4.46 | 28,425 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,443 |
| The Portuguese Empire | 0 | - | 4.58 | 12,118 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,138 |
| American to British Word Translation | 0 | - | 4.14 | 139,843 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,094 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,470 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,857 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,764 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,013 |
| Champions League Top 4 | 0 | - | 4.78 | 139,614 |
| Word Chain - Asia | 0 | - | 4.34 | 29,404 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,199 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,272 |
| African East Coast | 0 | - | 4.96 | 96,937 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,826 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,243 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,772 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,923 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,968 |
| Random Symbol to Element | 0 | - | 4.88 | 94,226 |
| Name a Valid World City | 0 | - | 4.85 | 72,159 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,382 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,660,905 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,151 |
| Australia Map Quiz | 0 | - | 4.95 | 346,528 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,885 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,935 |
| Word Chain - South America | 0 | - | 4.51 | 24,025 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,780 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,404 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,495 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,625 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,405 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,658 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,351 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,129 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,700 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,348 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,727 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,693 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,994 |
| European Geography A-Z | 0 | - | 4.29 | 49,526 |
| Austria... or Australia? | 0 | - | 4.67 | 104,851 |
| Famous French People | 0 | - | 4.05 | 36,168 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,285 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,076 |
