| European Countries by First 2 Letters | 0 | - | 4.95 | 529,108 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,312 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,921 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,677 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,050 |
| Official European Union Languages | 0 | - | 4.97 | 238,281 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,705 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,797 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,588 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,439 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,928 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,375 |
| Celtic Nations | 0 | - | 4.69 | 46,917 |
| Capitals of French Regions | 0 | - | 4.45 | 16,053 |
| Capitals of German States | 0 | - | 4.74 | 28,941 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,301 |
| History of Italy | 0 | - | 4.55 | 31,955 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,702 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,636 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,195 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,298 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,160 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,015 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,087 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,004 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,438 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,090 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,819 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,682 |
| History of Austria | 0 | - | 4.70 | 17,849 |
| Geography of the French Empire | 0 | - | 4.45 | 27,040 |
| The French Revolution | 0 | - | 4.46 | 23,919 |
| France Multiple Choice | 0 | - | 4.39 | 40,721 |
| States of Germany | 0 | - | 4.96 | 152,150 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,943 |
| Regions of Italy | 0 | - | 4.92 | 75,701 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,011 |
| The Vikings! | 0 | - | 4.46 | 28,333 |
| The Portuguese Empire | 0 | - | 4.58 | 12,054 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,759 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,099 |
| American to British Word Translation | 0 | - | 4.14 | 138,867 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,872 |
| Champions League Winners | 0 | - | 4.92 | 1,005,230 |
| Presidents of France | 0 | - | 4.25 | 24,055 |
| History of France | 0 | - | 4.59 | 56,904 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,017 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,576 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,647 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,581 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,691 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,872 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,492 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,872 |
| Slavic Languages | 0 | - | 4.68 | 54,307 |
| Departments of France | 0 | - | 4.93 | 53,946 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,529 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,642 |
| England or Wales? | 0 | - | 4.94 | 45,634 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,074 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,004 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,386 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,742 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,467 |
| Geography of Germany | 0 | - | 4.35 | 17,173 |
| History of Spain | 0 | - | 4.23 | 21,074 |
| Languages of Spain | 0 | - | 4.36 | 23,300 |
| British to American Word Translation | 0 | - | 3.74 | 255,030 |
| British Foods by Description | 0 | - | 3.94 | 48,320 |
| British and American Word Differences | 0 | - | 2.63 | 46,865 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,585 |
| Bridges of London | 0 | - | 4.17 | 10,098 |
| British Sport Trivia | 0 | - | 4.37 | 20,447 |
| Famous Welsh People | 0 | - | 4.29 | 11,427 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,839 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,941 |
| History of Russia Quiz | 0 | - | 4.47 | 31,899 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,710 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,600 |
| Name that Greek Letter | 0 | - | 4.93 | 323,244 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,819 |
| Europe Map Quiz | 0 | - | 5.00 | 4,758,318 |
| The Trojan War | 0 | - | 4.83 | 39,672 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,651 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,459 |
| Roman Emperors | 0 | - | 4.95 | 119,773 |
| British Noble Ranks | 0 | - | 3.85 | 20,422 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,896 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,230 |
| Australian Capitals | 0 | - | 4.92 | 62,709 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,618 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,739 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,459 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,176 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,228 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,279 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,318 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,628 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,535 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,854 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,226 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,234 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,896 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,186 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,205 |
| European Geography By Letter - S #1 | 0 | - | 4.54 | 100,436 |
| Regions of France | 0 | - | 4.75 | 120,556 |
| France Immigration by Country | 0 | - | 4.70 | 76,449 |
| Famous Germans | 0 | - | 4.50 | 55,234 |
| German Groups of Things | 0 | - | 4.46 | 38,453 |
| Germany True or False? | 0 | - | 4.61 | 48,762 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,933 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,189 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,383 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,291 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,244 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,140 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,442 |
| Asia Map Quiz | 0 | - | 4.99 | 915,447 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,711 |
| African East Coast | 0 | - | 4.96 | 95,923 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,742 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,560 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,947 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,612 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,723 |
| European Physical Geography | 0 | - | 4.26 | 33,485 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,984 |
| Country Codes of Europe | 0 | - | 3.43 | 13,701 |
| The Only European Country ... | 0 | - | 4.91 | 216,243 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,910 |
| Geography of Russia | 0 | - | 4.57 | 21,517 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,926 |
| Ancient Greek Words | 0 | - | 4.93 | 111,445 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,048 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,080 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,610 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,628 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,888 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,544 |
| Champions League Top 4 | 0 | - | 4.77 | 136,069 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,795 |
| Countries of Africa | 0 | - | 5.00 | 2,532,676 |
| Australia Map Quiz | 0 | - | 4.95 | 344,111 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,324 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,176 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,331 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,653 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,824 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,471 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,312 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,961 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,569 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,802 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,636 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,064 |
| European Geography A-Z | 0 | - | 4.29 | 49,222 |
| Austria... or Australia? | 0 | - | 4.68 | 104,267 |
| Famous French People | 0 | - | 4.06 | 35,294 |
| Word Chain - France | 0 | - | 4.38 | 42,759 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,959 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,889 |
| Italian Foods | 0 | - | 4.30 | 72,705 |
| The Mafia Quiz | 0 | - | 4.46 | 23,312 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,603 |
| History of The Netherlands | 0 | - | 4.46 | 17,422 |
| Canary Islands | 0 | - | 4.62 | 17,470 |
| British Spellings | 0 | - | 4.06 | 99,422 |
| British Groups of Things | 0 | - | 4.25 | 82,849 |
| British Acronyms | 0 | - | 4.40 | 45,776 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,027 |
| British Monopoly Board | 0 | - | 4.52 | 41,152 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,722 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,888 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,924 |
| Flags of Africa Quiz | 0 | - | 5.00 | 470,041 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,788 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,481 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,104 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,169 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,320 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,817 |
| African Island Countries | 0 | - | 4.96 | 101,512 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,216 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,172 |
| Australian States and Territories | 0 | - | 4.96 | 141,800 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,253 |
| Australia True or False | 0 | - | 4.87 | 56,806 |
| Flags of North and South America | 0 | - | 4.99 | 372,412 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,555 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,142 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,537 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,378 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,021,558 |
| North America Map Quiz | 0 | - | 4.98 | 248,047 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,681 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,821 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,594 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,078 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,828 |
