| European Countries by First 2 Letters | 0 | - | 4.95 | 528,062 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,891 |
| Official European Union Languages | 0 | - | 4.97 | 237,799 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,410 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,800 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,781 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,691 |
| Celtic Nations | 0 | - | 4.69 | 46,880 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,331 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,148 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,527 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,790 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,216 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,802 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,025 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,323 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,630 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,658 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,669 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,740 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,450 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,610 |
| States of Germany | 0 | - | 4.96 | 151,315 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,668 |
| Regions of Italy | 0 | - | 4.92 | 75,306 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 50,816 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,314 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,796 |
| Champions League Winners | 0 | - | 4.92 | 1,001,612 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,532 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,521 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,634 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,349 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,004 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,071 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,861 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,258 |
| Slavic Languages | 0 | - | 4.68 | 54,194 |
| Departments of France | 0 | - | 4.93 | 53,452 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,536 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,466 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,380 |
| England or Wales? | 0 | - | 4.94 | 45,518 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,399 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,324 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,670 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,193 |
| History of Russia Quiz | 0 | - | 4.49 | 31,859 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,663 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,664 |
| History of Italy | 0 | - | 4.55 | 31,911 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,522 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,586 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,115 |
| Australian Capitals | 0 | - | 4.92 | 62,671 |
| Europe Map Quiz | 0 | - | 5.00 | 4,748,722 |
| Capitals of French Regions | 0 | - | 4.45 | 16,025 |
| Capitals of German States | 0 | - | 4.74 | 28,901 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,229 |
| The Trojan War | 0 | - | 4.83 | 39,593 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,089 |
| Name that Greek Letter | 0 | - | 4.93 | 322,737 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,284 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,327 |
| Roman Emperors | 0 | - | 4.95 | 119,414 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,794 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,113 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,731 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,163 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,137 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,025 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,481 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,388 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,060 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,834 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,467 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,651 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,156 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,809 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,093 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,136 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,824 |
| Country Codes of Europe | 0 | - | 3.43 | 13,682 |
| Regions of France | 0 | - | 4.77 | 120,092 |
| France Immigration by Country | 0 | - | 4.72 | 76,273 |
| Famous Germans | 0 | - | 4.50 | 54,877 |
| German Groups of Things | 0 | - | 4.46 | 38,398 |
| Germany True or False? | 0 | - | 4.61 | 48,676 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,768 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,963 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,112 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,167 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,914 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,444,651 |
| Asia Map Quiz | 0 | - | 4.99 | 911,850 |
| European Physical Geography | 0 | - | 4.26 | 33,439 |
| Geography of Russia | 0 | - | 4.57 | 21,494 |
| History of Austria | 0 | - | 4.70 | 17,815 |
| Geography of the French Empire | 0 | - | 4.45 | 27,007 |
| The French Revolution | 0 | - | 4.46 | 23,877 |
| France Multiple Choice | 0 | - | 4.38 | 40,687 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,442 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,759 |
| The Vikings! | 0 | - | 4.46 | 28,299 |
| The Portuguese Empire | 0 | - | 4.58 | 12,034 |
| American to British Word Translation | 0 | - | 4.13 | 138,457 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,824 |
| Countries of Africa | 0 | - | 5.00 | 2,523,870 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,363 |
| African East Coast | 0 | - | 4.96 | 95,608 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,438 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,269 |
| Australia Map Quiz | 0 | - | 4.94 | 343,438 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,298 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,504 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,127 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,442 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,461 |
| The Only European Country ... | 0 | - | 4.91 | 215,415 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,467 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,876 |
| Presidents of France | 0 | - | 4.25 | 23,998 |
| History of France | 0 | - | 4.59 | 56,676 |
| Ancient Greek Words | 0 | - | 4.93 | 111,179 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,939 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,996 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,472 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,483 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,211 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,235 |
| Champions League Top 4 | 0 | - | 4.77 | 135,186 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 98,312 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,379,683 |
| Numbers Tile Select Quiz | 0 | - | 4.98 | 74,397 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,716 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,733 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,354 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,978 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,783 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,902 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,858 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,333 |
| African Island Countries | 0 | - | 4.96 | 101,238 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,753 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,028 |
| Australian States and Territories | 0 | - | 4.96 | 141,450 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,169 |
| Australia True or False | 0 | - | 4.87 | 56,702 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,439 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,587 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,005 |
| North America Map Quiz | 0 | - | 4.98 | 246,916 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,577 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,701 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,928 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,717 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,467 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,883 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,138 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,759 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,701 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,387 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,105 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,450 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,550 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,672 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,236 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,773 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,649 |
| European Geography A-Z | 0 | - | 4.29 | 49,132 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,833 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,481 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,825 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,583 |
| Slavic Countries | 0 | - | 4.96 | 111,325 |
| Austria... or Australia? | 0 | - | 4.68 | 104,143 |
| Word Chain - France | 0 | - | 4.38 | 42,694 |
| Geography of Germany | 0 | - | 4.35 | 17,140 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,884 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,852 |
| Italian Foods | 0 | - | 4.31 | 72,516 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,176 |
| The Mafia Quiz | 0 | - | 4.46 | 23,259 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,413 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,878 |
| History of The Netherlands | 0 | - | 4.46 | 17,374 |
| History of Spain | 0 | - | 4.23 | 21,054 |
| Languages of Spain | 0 | - | 4.36 | 23,247 |
| Canary Islands | 0 | - | 4.61 | 17,445 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,488 |
| British to American Word Translation | 0 | - | 3.74 | 254,937 |
| British Foods by Description | 0 | - | 3.94 | 48,298 |
| British Spellings | 0 | - | 4.06 | 99,366 |
| British Groups of Things | 0 | - | 4.25 | 82,798 |
| British and American Word Differences | 0 | - | 2.63 | 46,839 |
| British Acronyms | 0 | - | 4.39 | 45,721 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,002 |
| British Monopoly Board | 0 | - | 4.52 | 41,108 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,555 |
| Bridges of London | 0 | - | 4.17 | 10,085 |
