| European Countries by First 2 Letters | 0 | - | 4.95 | 528,551 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,931 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,977 |
| Official European Union Languages | 0 | - | 4.97 | 238,051 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,569 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,345 |
| Slavic Languages | 0 | - | 4.68 | 54,252 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,863 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,741 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,685 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,352 |
| Celtic Nations | 0 | - | 4.69 | 46,903 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,221 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,898 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,424 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,278 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,862 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,999 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,855 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,377 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,835 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,641 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,186 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,899 |
| States of Germany | 0 | - | 4.96 | 151,761 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,849 |
| Regions of Italy | 0 | - | 4.92 | 75,497 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,756 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,587 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,951 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,655 |
| Champions League Winners | 0 | - | 4.92 | 1,003,387 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,474 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,211 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,575 |
| Departments of France | 0 | - | 4.93 | 53,712 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,511 |
| England or Wales? | 0 | - | 4.94 | 45,587 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,667 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,546 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,466 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,305 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,569 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,411 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,325 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,703 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,886 |
| Name that Greek Letter | 0 | - | 4.93 | 323,016 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,799 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,819 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| The Trojan War | 0 | - | 4.83 | 39,633 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,491 |
| History of Italy | 0 | - | 4.55 | 31,929 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,617 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,396 |
| Roman Emperors | 0 | - | 4.95 | 119,618 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,604 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,154 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,571 |
| Australian Capitals | 0 | - | 4.92 | 62,691 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,538 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,515 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,256 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,007 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,081 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,059 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,176 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,512 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,201 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,762 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,082 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,115 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,194 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,852 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,140 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,168 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,315 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,348 |
| Capitals of French Regions | 0 | - | 4.45 | 16,033 |
| Regions of France | 0 | - | 4.75 | 120,349 |
| France Immigration by Country | 0 | - | 4.70 | 76,373 |
| Famous Germans | 0 | - | 4.50 | 55,131 |
| German Groups of Things | 0 | - | 4.46 | 38,425 |
| Capitals of German States | 0 | - | 4.74 | 28,923 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,274 |
| Germany True or False? | 0 | - | 4.61 | 48,730 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,845 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,404 |
| Ancient Greek Words | 0 | - | 4.93 | 111,300 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,232 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,199 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,229 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,038 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,539 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,425 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,103 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,245 |
| European Physical Geography | 0 | - | 4.26 | 33,463 |
| Geography of Russia | 0 | - | 4.57 | 21,506 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Geography of the French Empire | 0 | - | 4.45 | 27,018 |
| The French Revolution | 0 | - | 4.46 | 23,894 |
| France Multiple Choice | 0 | - | 4.38 | 40,699 |
| History of France | 0 | - | 4.59 | 56,791 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,458 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,963 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,980 |
| The Vikings! | 0 | - | 4.46 | 28,315 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,017 |
| The Portuguese Empire | 0 | - | 4.58 | 12,045 |
| American to British Word Translation | 0 | - | 4.14 | 138,692 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,852 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,544 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,577 |
| Champions League Top 4 | 0 | - | 4.77 | 135,625 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,246 |
| Asia Map Quiz | 0 | - | 4.99 | 914,037 |
| Countries of Africa | 0 | - | 5.00 | 2,528,790 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,546 |
| African East Coast | 0 | - | 4.96 | 95,765 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,574 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,430 |
| Australia Map Quiz | 0 | - | 4.95 | 343,740 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,001 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,641 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,558 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,435 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,856 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,183 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,521 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,701 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,347 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,193 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,860 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,460 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,717 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,596 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,978 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,749 |
| European Geography A-Z | 0 | - | 4.29 | 49,182 |
| Country Codes of Europe | 0 | - | 3.43 | 13,699 |
| The Only European Country ... | 0 | - | 4.91 | 215,872 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,685 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,024 |
| Austria... or Australia? | 0 | - | 4.68 | 104,215 |
| Famous French People | 0 | - | 4.06 | 34,443 |
| Presidents of France | 0 | - | 4.25 | 24,023 |
| Word Chain - France | 0 | - | 4.38 | 42,728 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,923 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,874 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,343 |
| Italian Foods | 0 | - | 4.30 | 72,611 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,235 |
| The Mafia Quiz | 0 | - | 4.46 | 23,292 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,007 |
| Canary Islands | 0 | - | 4.62 | 17,458 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,573 |
| British Spellings | 0 | - | 4.06 | 99,398 |
| British Groups of Things | 0 | - | 4.25 | 82,824 |
| British Acronyms | 0 | - | 4.39 | 45,746 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,012 |
| British Monopoly Board | 0 | - | 4.52 | 41,133 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,649 |
| Geography of Scotland | 0 | - | 4.63 | 21,581 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,579 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,611 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,848 |
| Flags of Africa Quiz | 0 | - | 5.00 | 468,859 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,590 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,351 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,953 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,029 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,098 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,586 |
| African Island Countries | 0 | - | 4.96 | 101,378 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,986 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,091 |
| Australian States and Territories | 0 | - | 4.96 | 141,652 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,224 |
| Australia True or False | 0 | - | 4.87 | 56,751 |
| Flags of North and South America | 0 | - | 4.99 | 371,671 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,500 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,056 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,232 |
| South America Map Quiz | 0 | - | 5.00 | 1,546,910 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,046 |
| North America Map Quiz | 0 | - | 4.98 | 247,485 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,629 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,022 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,961 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,014 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,773 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,216 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,792 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,379 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,927 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,052 |
