| European Countries by First 2 Letters | 0 | - | 4.95 | 528,530 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,875 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,276 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,970 |
| Official European Union Languages | 0 | - | 4.97 | 238,022 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,561 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,311 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,856 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,737 |
| Celtic Nations | 0 | - | 4.69 | 46,901 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,352 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,605 |
| Australia True or False | 0 | - | 4.87 | 56,747 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,209 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,855 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,302 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,858 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,911 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,375 |
| France Multiple Choice | 0 | - | 4.38 | 40,698 |
| Germany True or False? | 0 | - | 4.61 | 48,727 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,654 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,840 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,764 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,625 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,106 |
| States of Germany | 0 | - | 4.96 | 151,736 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,830 |
| Regions of Italy | 0 | - | 4.92 | 75,489 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,696 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,570 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,947 |
| Champions League Winners | 0 | - | 4.92 | 1,003,235 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,776 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,543 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,461 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,277 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,440 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,165 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,547 |
| Slavic Languages | 0 | - | 4.68 | 54,245 |
| Departments of France | 0 | - | 4.93 | 53,682 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,568 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,507 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,410 |
| England or Wales? | 0 | - | 4.94 | 45,579 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,638 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,551 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,811 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,305 |
| History of Russia Quiz | 0 | - | 4.49 | 31,874 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,682 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,700 |
| History of Italy | 0 | - | 4.55 | 31,928 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,603 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,153 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,643 |
| Australian Capitals | 0 | - | 4.92 | 62,689 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,584 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,344 |
| Capitals of French Regions | 0 | - | 4.45 | 16,032 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,019 |
| Capitals of German States | 0 | - | 4.74 | 28,919 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,266 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,879 |
| The Trojan War | 0 | - | 4.83 | 39,629 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,803 |
| Name that Greek Letter | 0 | - | 4.93 | 322,979 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,470 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,388 |
| Roman Emperors | 0 | - | 4.95 | 119,593 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,399 |
| Africa Map Quiz | 0 | - | 5.00 | 2,113,951 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,128 |
| European Geography By Letter - A | 0 | - | 4.52 | 144,144 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,443 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,202 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,952 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,038 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,002 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,142 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,475 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,170 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,736 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,042 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,190 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,849 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,136 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,164 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,283 |
| Country Codes of Europe | 0 | - | 3.43 | 13,698 |
| Regions of France | 0 | - | 4.75 | 120,326 |
| France Immigration by Country | 0 | - | 4.70 | 76,367 |
| Famous Germans | 0 | - | 4.50 | 55,112 |
| German Groups of Things | 0 | - | 4.46 | 38,423 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,838 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,208 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,194 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,224 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,032 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,159 |
| Asia Map Quiz | 0 | - | 4.99 | 913,924 |
| European Physical Geography | 0 | - | 4.26 | 33,452 |
| Geography of Russia | 0 | - | 4.57 | 21,503 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Geography of the French Empire | 0 | - | 4.45 | 27,017 |
| The French Revolution | 0 | - | 4.46 | 23,894 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,455 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,353 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,430 |
| The Vikings! | 0 | - | 4.46 | 28,314 |
| The Portuguese Empire | 0 | - | 4.58 | 12,043 |
| American to British Word Translation | 0 | - | 4.14 | 138,680 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,849 |
| Countries of Africa | 0 | - | 5.00 | 2,528,447 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,521 |
| African East Coast | 0 | - | 4.96 | 95,750 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,566 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,416 |
| Australia Map Quiz | 0 | - | 4.95 | 343,706 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,610 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,548 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,391 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,811 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,711 |
| The Only European Country ... | 0 | - | 4.91 | 215,832 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,659 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,019 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,898 |
| Presidents of France | 0 | - | 4.25 | 24,018 |
| History of France | 0 | - | 4.59 | 56,779 |
| Ancient Greek Words | 0 | - | 4.93 | 111,287 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,009 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,006 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,540 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,566 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,505 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,412 |
| Champions League Top 4 | 0 | - | 4.77 | 135,591 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 98,552 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,539 |
| What's Bigger? #1 | 0 | - | 4.87 | 149,794 |
| North Korea... or South Korea? | 0 | - | 4.47 | 80,580 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,841 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,570 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,327 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,934 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,014 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,084 |
| Top African Languages on a Map | 0 | - | 4.93 | 73,566 |
| African Island Countries | 0 | - | 4.96 | 101,366 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,962 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,085 |
| Australian States and Territories | 0 | - | 4.96 | 141,607 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,212 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,490 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,026 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,220 |
| North America Map Quiz | 0 | - | 4.98 | 247,429 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,623 |
| United States Map Quiz | 0 | - | 4.98 | 4,152,497 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,009 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,768 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,141 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,489 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,660 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,310 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,162 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,828 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,433 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,690 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,594 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,947 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,367 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,912 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,013 |
| European Geography A-Z | 0 | - | 4.29 | 49,178 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,932 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,690 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,933 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,670 |
| Slavic Countries | 0 | - | 4.96 | 111,436 |
| Austria... or Australia? | 0 | - | 4.68 | 104,210 |
| Famous French People | 0 | - | 4.09 | 34,216 |
| Word Chain - France | 0 | - | 4.38 | 42,727 |
| Geography of Germany | 0 | - | 4.35 | 17,154 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,919 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,868 |
| Italian Foods | 0 | - | 4.30 | 72,603 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,232 |
| The Mafia Quiz | 0 | - | 4.46 | 23,291 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,911 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,974 |
| History of The Netherlands | 0 | - | 4.46 | 17,400 |
| History of Spain | 0 | - | 4.23 | 21,065 |
| Languages of Spain | 0 | - | 4.36 | 23,277 |
| Canary Islands | 0 | - | 4.62 | 17,458 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,563 |
| British to American Word Translation | 0 | - | 3.74 | 254,978 |
