| European Countries by First 2 Letters | 0 | - | 4.95 | 533,313 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,683 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,918 |
| England or Wales? | 0 | - | 4.94 | 46,111 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,899 |
| Official European Union Languages | 0 | - | 4.97 | 240,490 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,905 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,649 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,185 |
| Slavic Languages | 0 | - | 4.67 | 54,814 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,418 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,126 |
| Celtic Nations | 0 | - | 4.61 | 47,134 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,187 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,385 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,864 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,780 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,546 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 363,187 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,546 |
| Australia... or New Zealand? | 0 | - | 4.83 | 62,161 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,320 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,949 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,412 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,259 |
| Federal Subjects of Russia | 0 | - | 4.95 | 150,088 |
| States of Germany | 0 | - | 4.95 | 155,084 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,877 |
| Regions of Italy | 0 | - | 4.92 | 77,347 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,982 |
| Regions of Spain Quiz | 0 | - | 4.91 | 115,701 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,978 |
| Champions League Winners | 0 | - | 4.92 | 1,018,964 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,850 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,879 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,568 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,503 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,433 |
| Austria... or Australia? | 0 | - | 4.67 | 104,888 |
| Departments of France | 0 | - | 4.93 | 55,505 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,802 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,644 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,819 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,744 |
| Word Scramble - European Countries | 0 | - | 4.72 | 142,518 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,831 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,101 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,330 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,488 |
| Name that Greek Letter | 0 | - | 4.93 | 325,454 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,765 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,673 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,848 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,781 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,071 |
| History of Russia Quiz | 0 | - | 4.47 | 32,033 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,858 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,705 |
| The Trojan War | 0 | - | 4.83 | 40,133 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,388 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 128,167 |
| History of Italy | 0 | - | 4.55 | 32,204 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,595 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,747 |
| Roman Emperors | 0 | - | 4.95 | 121,557 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,868 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,490 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,170 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,788 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,615 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 122,063 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,638 |
| European Geography By Letter - D | 0 | - | 4.49 | 119,197 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,560 |
| European Geography By Letter - M | 0 | - | 4.70 | 133,093 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,471 |
| European Geography By Letter - R | 0 | - | 4.43 | 95,046 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,305 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,953 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,927 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,599 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,273 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,544 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,494 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,687 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,653 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,809 |
| Capitals of French Regions | 0 | - | 4.45 | 16,218 |
| Regions of France | 0 | - | 4.70 | 122,542 |
| France Immigration by Country | 0 | - | 4.70 | 77,052 |
| Famous Germans | 0 | - | 4.50 | 55,909 |
| German Groups of Things | 0 | - | 4.47 | 38,685 |
| Capitals of German States | 0 | - | 4.74 | 29,104 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,606 |
| Germany True or False? | 0 | - | 4.61 | 49,096 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,625 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,805 |
| Ancient Greek Words | 0 | - | 4.93 | 112,752 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,599 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,989 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,524 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 104,007 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,622 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,868 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,997 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,084 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,981 |
| Australian Capitals | 0 | - | 4.92 | 62,887 |
| European Physical Geography | 0 | - | 4.26 | 33,629 |
| Geography of Russia | 0 | - | 4.57 | 21,633 |
| History of Austria | 0 | - | 4.70 | 17,995 |
| Geography of the French Empire | 0 | - | 4.45 | 27,245 |
| The French Revolution | 0 | - | 4.47 | 24,177 |
| France Multiple Choice | 0 | - | 4.39 | 40,883 |
| History of France | 0 | - | 4.61 | 57,782 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,584 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,754 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,668 |
| The Vikings! | 0 | - | 4.46 | 28,434 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,463 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| American to British Word Translation | 0 | - | 4.14 | 139,895 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,104 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,512 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,671 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,514 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,865 |
| Champions League Top 4 | 0 | - | 4.78 | 139,800 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,841 |
| Asia Map Quiz | 0 | - | 4.99 | 927,396 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,692 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,681 |
| Australia Map Quiz | 0 | - | 4.95 | 346,663 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,615 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,550 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,015 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,429 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,763 |
| European Geography By Letter - E | 0 | - | 4.25 | 123,178 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,945 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,585 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,389 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,904 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,557 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,880 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,789 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,968 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 52,109 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,647 |
| European Geography A-Z | 0 | - | 4.29 | 49,545 |
| Country Codes of Europe | 0 | - | 3.45 | 13,859 |
| The Only European Country ... | 0 | - | 4.91 | 219,846 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,964 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,582 |
| Famous French People | 0 | - | 4.05 | 36,207 |
| Presidents of France | 0 | - | 4.25 | 24,393 |
| Word Chain - France | 0 | - | 4.38 | 42,979 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,308 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,081 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,101 |
| Figures from Greek Mythology | 0 | - | 4.92 | 194,840 |
| Italian Foods | 0 | - | 4.30 | 73,445 |
| Countries Italy Declared War On | 0 | - | 4.77 | 50,875 |
| The Mafia Quiz | 0 | - | 4.46 | 23,458 |
| History of The Netherlands | 0 | - | 4.46 | 17,583 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,140 |
| Canary Islands | 0 | - | 4.62 | 17,553 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,195 |
| British Spellings | 0 | - | 4.06 | 99,647 |
| British Groups of Things | 0 | - | 4.26 | 83,057 |
| British Acronyms | 0 | - | 4.40 | 46,003 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,137 |
| British Monopoly Board | 0 | - | 4.52 | 41,305 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,242 |
| Geography of Scotland | 0 | - | 4.63 | 21,842 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,284 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,388,393 |
| Countries of Africa | 0 | - | 5.00 | 2,567,160 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,336 |
| African East Coast | 0 | - | 4.96 | 96,990 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,883 |
| Astronomy True or False | 0 | - | 4.39 | 36,646 |
| Australian States and Territories | 0 | - | 4.96 | 143,150 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,568 |
| Australia True or False | 0 | - | 4.87 | 57,259 |
| Flags of North and South America | 0 | - | 4.99 | 378,632 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,114 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 145,043 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,955 |
| South America Map Quiz | 0 | - | 5.00 | 1,559,425 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,804 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,814 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,034,232 |
| North America Map Quiz | 0 | - | 4.98 | 253,141 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,054 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,954 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,503 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,743 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,705 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,276 |
