| European Countries by First 2 Letters | 0 | - | 4.95 | 526,679 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,668 |
| Official European Union Languages | 0 | - | 4.97 | 237,125 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,987 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,581 |
| Celtic Nations | 0 | - | 4.69 | 46,836 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,583 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,595 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,255 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,929 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,105 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,345 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,079 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,191 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,602 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,592 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,562 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,703 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,444 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,312 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,397 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,931 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,390 |
| States of Germany | 0 | - | 4.96 | 150,376 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,127 |
| Regions of Italy | 0 | - | 4.92 | 74,865 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,918 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,519 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,410 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,288 |
| Champions League Winners | 0 | - | 4.92 | 997,527 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,469 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,609 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,059 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,267 |
| Slavic Languages | 0 | - | 4.67 | 54,031 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,448 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,271 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,815 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,458 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,383 |
| Departments of France | 0 | - | 4.93 | 52,957 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,392 |
| England or Wales? | 0 | - | 4.94 | 45,379 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,688 |
| Australian Capitals | 0 | - | 4.92 | 62,601 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,031 |
| Country Codes of Europe | 0 | - | 3.46 | 13,658 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,246 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,904 |
| History of Russia Quiz | 0 | - | 4.49 | 31,803 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,591 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,546 |
| Capitals of French Regions | 0 | - | 4.45 | 15,995 |
| Capitals of German States | 0 | - | 4.74 | 28,823 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,116 |
| History of Italy | 0 | - | 4.55 | 31,845 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,247 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,499 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,009 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,879 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,169 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,478 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,967 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,927 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,776 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,283 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,025 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,731 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,683 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,064 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,382 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,023 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,659 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,980 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,019 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,644 |
| Regions of France | 0 | - | 4.78 | 119,443 |
| France Immigration by Country | 0 | - | 4.72 | 76,026 |
| Famous Germans | 0 | - | 4.50 | 54,676 |
| German Groups of Things | 0 | - | 4.46 | 38,325 |
| Germany True or False? | 0 | - | 4.61 | 48,562 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,533 |
| The Trojan War | 0 | - | 4.83 | 39,470 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,712 |
| Name that Greek Letter | 0 | - | 4.94 | 321,883 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,725 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,625 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,117 |
| Roman Emperors | 0 | - | 4.95 | 118,627 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,882 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,083 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,070 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,907 |
| Asia Map Quiz | 0 | - | 4.99 | 908,005 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,914 |
| African East Coast | 0 | - | 4.96 | 95,165 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,038 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,929 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,380 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,320 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,260 |
| European Physical Geography | 0 | - | 4.26 | 33,385 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,757 |
| The Only European Country ... | 0 | - | 4.91 | 214,165 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,773 |
| Geography of Russia | 0 | - | 4.57 | 21,441 |
| History of Austria | 0 | - | 4.70 | 17,768 |
| Presidents of France | 0 | - | 4.25 | 23,926 |
| Geography of the French Empire | 0 | - | 4.45 | 26,952 |
| The French Revolution | 0 | - | 4.46 | 23,806 |
| France Multiple Choice | 0 | - | 4.38 | 40,649 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,399 |
| The Vikings! | 0 | - | 4.46 | 28,255 |
| The Portuguese Empire | 0 | - | 4.54 | 12,002 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,970 |
| American to British Word Translation | 0 | - | 4.11 | 135,830 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,743 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,614 |
| Countries of Africa | 0 | - | 5.00 | 2,511,313 |
| Australia Map Quiz | 0 | - | 4.94 | 342,708 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,587 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,801 |
| History of France | 0 | - | 4.59 | 56,226 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,939 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,735 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,290 |
| Champions League Top 4 | 0 | - | 4.77 | 134,108 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,802 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,205 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,687 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,280 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,716 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,949 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,336 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,543 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,206 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,963 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,332 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,432 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,548 |
| European Geography A-Z | 0 | - | 4.28 | 49,036 |
| Word Chain - France | 0 | - | 4.38 | 42,604 |
| Ancient Greek Words | 0 | - | 4.92 | 110,812 |
| Italian Foods | 0 | - | 4.31 | 72,264 |
| The Mafia Quiz | 0 | - | 4.46 | 23,214 |
| History of The Netherlands | 0 | - | 4.46 | 17,331 |
| Canary Islands | 0 | - | 4.61 | 17,416 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,216 |
| British Spellings | 0 | - | 4.07 | 99,276 |
| British Groups of Things | 0 | - | 4.25 | 82,713 |
| British Acronyms | 0 | - | 4.39 | 45,647 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,967 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,412 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,339 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,461 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,481 |
| Flags of Africa Quiz | 0 | - | 5.00 | 464,286 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,775 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,659 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,389 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,582 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,303 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,669 |
| African Island Countries | 0 | - | 4.96 | 100,887 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,874 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,790 |
| Australian States and Territories | 0 | - | 4.96 | 141,019 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,045 |
| Australia Country Quiz | 0 | - | 4.43 | 69,336 |
| Australia True or False | 0 | - | 4.87 | 56,548 |
| Flags of North and South America | 0 | - | 4.99 | 368,153 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,205 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,254 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,373 |
| South America Map Quiz | 0 | - | 5.00 | 1,542,038 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,013,254 |
| North America Map Quiz | 0 | - | 4.98 | 244,940 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,415 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,460 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,471 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,707 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,548 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,228,864 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,891 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,815 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,407 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,617 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,565 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,779 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,386 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,295 |
| Slavic Countries | 0 | - | 4.96 | 110,961 |
| Austria... or Australia? | 0 | - | 4.68 | 103,933 |
| Geography of Germany | 0 | - | 4.35 | 17,102 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,805 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,791 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,020 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,006 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,669 |
