| European Countries by First 2 Letters | 0 | - | 4.95 | 526,489 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,661 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,056 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,602 |
| Official European Union Languages | 0 | - | 4.97 | 236,917 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,727 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,357 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,556 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,576 |
| Celtic Nations | 0 | - | 4.69 | 46,819 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,248 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,190 |
| Australia True or False | 0 | - | 4.87 | 56,520 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,883 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,919 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,040 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,184 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,164 |
| France Multiple Choice | 0 | - | 4.38 | 40,640 |
| Germany True or False? | 0 | - | 4.61 | 48,539 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,542 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,518 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,354 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,263 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,294 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,844 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,104 |
| States of Germany | 0 | - | 4.96 | 150,179 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,061 |
| Regions of Italy | 0 | - | 4.92 | 74,777 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,855 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,424 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,234 |
| Champions League Winners | 0 | - | 4.92 | 996,834 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,607 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,454 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,605 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,020 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,124 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,644 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,325 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,254 |
| Slavic Languages | 0 | - | 4.67 | 54,000 |
| Departments of France | 0 | - | 4.93 | 52,867 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,436 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,380 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,259 |
| England or Wales? | 0 | - | 4.94 | 45,342 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,557 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,159 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,174 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,862 |
| History of Russia Quiz | 0 | - | 4.49 | 31,798 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,580 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,528 |
| History of Italy | 0 | - | 4.55 | 31,828 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,491 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,989 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,536 |
| Australian Capitals | 0 | - | 4.92 | 62,595 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,664 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,169 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,627 |
| Capitals of French Regions | 0 | - | 4.45 | 15,988 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,624 |
| Capitals of German States | 0 | - | 4.74 | 28,816 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,105 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,487 |
| The Trojan War | 0 | - | 4.83 | 39,447 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,152 |
| Name that Greek Letter | 0 | - | 4.94 | 321,761 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,611 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,073 |
| Roman Emperors | 0 | - | 4.95 | 118,539 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,276 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,873 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,581 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,425 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,929 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,875 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,737 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,244 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,944 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,694 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,651 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,034 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,330 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,005 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,635 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,960 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,001 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,614 |
| Country Codes of Europe | 0 | - | 3.46 | 13,656 |
| Regions of France | 0 | - | 4.78 | 119,326 |
| France Immigration by Country | 0 | - | 4.72 | 75,986 |
| Famous Germans | 0 | - | 4.50 | 54,640 |
| German Groups of Things | 0 | - | 4.46 | 38,309 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,480 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,563 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,851 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,063 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,009 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,159 |
| Asia Map Quiz | 0 | - | 4.99 | 907,419 |
| European Physical Geography | 0 | - | 4.26 | 33,377 |
| Geography of Russia | 0 | - | 4.57 | 21,430 |
| History of Austria | 0 | - | 4.70 | 17,759 |
| Geography of the French Empire | 0 | - | 4.48 | 26,941 |
| The French Revolution | 0 | - | 4.46 | 23,790 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,389 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,504 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,375 |
| The Vikings! | 0 | - | 4.46 | 28,249 |
| The Portuguese Empire | 0 | - | 4.54 | 11,995 |
| American to British Word Translation | 0 | - | 4.06 | 130,384 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,721 |
| Countries of Africa | 0 | - | 5.00 | 2,509,086 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,852 |
| African East Coast | 0 | - | 4.96 | 95,083 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,975 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,825 |
| Australia Map Quiz | 0 | - | 4.94 | 342,571 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,226 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,231 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,092 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,405 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,650 |
| The Only European Country ... | 0 | - | 4.91 | 213,965 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,626 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,788 |
| Presidents of France | 0 | - | 4.25 | 23,907 |
| History of France | 0 | - | 4.59 | 56,113 |
| Ancient Greek Words | 0 | - | 4.92 | 110,734 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,714 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,963 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,243 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,401 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,182 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,386 |
| Champions League Top 4 | 0 | - | 4.77 | 133,933 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,522 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,358 |
| What's Bigger? #1 | 0 | - | 4.87 | 148,865 |
| North Korea... or South Korea? | 0 | - | 4.47 | 80,309 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,447 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,677 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,609 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,317 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,522 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,184 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,516 |
| African Island Countries | 0 | - | 4.96 | 100,829 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,729 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,728 |
| Australian States and Territories | 0 | - | 4.96 | 140,937 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,028 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,165 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,195 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,278 |
| North America Map Quiz | 0 | - | 4.98 | 244,601 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,384 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,456 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,645 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,512 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,239 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,681 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,920 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,299 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,508 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,185 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,940 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,305 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,412 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,524 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,739 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,333 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,438 |
| European Geography A-Z | 0 | - | 4.28 | 49,010 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,499 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,551 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,305 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,230 |
| Slavic Countries | 0 | - | 4.96 | 110,892 |
| Austria... or Australia? | 0 | - | 4.68 | 103,895 |
| Word Chain - France | 0 | - | 4.38 | 42,586 |
| Geography of Germany | 0 | - | 4.35 | 17,090 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,785 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,775 |
| Italian Foods | 0 | - | 4.31 | 72,218 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,978 |
| The Mafia Quiz | 0 | - | 4.46 | 23,211 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,693 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,642 |
| History of The Netherlands | 0 | - | 4.46 | 17,320 |
| History of Spain | 0 | - | 4.29 | 21,006 |
| Languages of Spain | 0 | - | 4.36 | 23,158 |
| Canary Islands | 0 | - | 4.61 | 17,407 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,179 |
| British to American Word Translation | 0 | - | 3.74 | 254,166 |
| British Foods by Description | 0 | - | 3.94 | 48,251 |
