| European Countries by First 2 Letters | 0 | - | 4.95 | 528,575 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,981 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,982 |
| Official European Union Languages | 0 | - | 4.97 | 238,069 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,577 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,382 |
| Slavic Languages | 0 | - | 4.68 | 54,255 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,867 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,743 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,353 |
| Celtic Nations | 0 | - | 4.69 | 46,905 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,688 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,227 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,905 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,461 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,964 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,692 |
| Slavic Countries | 0 | - | 4.96 | 111,455 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,278 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,863 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,049 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,866 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,380 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,877 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,649 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,223 |
| Geography of Russia | 0 | - | 4.57 | 21,508 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,697 |
| States of Germany | 0 | - | 4.96 | 151,787 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,855 |
| Regions of Italy | 0 | - | 4.92 | 75,506 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,780 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,598 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,970 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,655 |
| Champions League Winners | 0 | - | 4.92 | 1,003,480 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,548 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,469 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,318 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,505 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,233 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,601 |
| Departments of France | 0 | - | 4.93 | 53,726 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,570 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,512 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,415 |
| England or Wales? | 0 | - | 4.94 | 45,589 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,683 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,813 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,332 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,704 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,601 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,824 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,926 |
| Name that Greek Letter | 0 | - | 4.93 | 323,034 |
| History of Italy | 0 | - | 4.55 | 31,932 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,620 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,606 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,156 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,451 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,349 |
| Word Chain - Russia | 0 | - | 4.33 | 15,737 |
| Capitals of French Regions | 0 | - | 4.45 | 16,034 |
| Capitals of German States | 0 | - | 4.74 | 28,923 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,275 |
| The Trojan War | 0 | - | 4.83 | 39,639 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,499 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,398 |
| Roman Emperors | 0 | - | 4.95 | 119,625 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,257 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,319 |
| Australian Capitals | 0 | - | 4.92 | 62,691 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,712 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,555 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,298 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,032 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,100 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,088 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,189 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,529 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,214 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,776 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,095 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,198 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,856 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,144 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,171 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,331 |
| Regions of France | 0 | - | 4.75 | 120,362 |
| France Immigration by Country | 0 | - | 4.70 | 76,378 |
| Famous Germans | 0 | - | 4.50 | 55,136 |
| German Groups of Things | 0 | - | 4.46 | 38,431 |
| Germany True or False? | 0 | - | 4.61 | 48,732 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,851 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,436 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,243 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,204 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,230 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,045 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,322 |
| Asia Map Quiz | 0 | - | 4.99 | 914,152 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,565 |
| African East Coast | 0 | - | 4.96 | 95,778 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,591 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,431 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,661 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,561 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,465 |
| European Physical Geography | 0 | - | 4.26 | 33,465 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,768 |
| Country Codes of Europe | 0 | - | 3.43 | 13,700 |
| The Only European Country ... | 0 | - | 4.91 | 215,903 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,712 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,030 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,900 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Presidents of France | 0 | - | 4.25 | 24,027 |
| Geography of the French Empire | 0 | - | 4.45 | 27,019 |
| The French Revolution | 0 | - | 4.46 | 23,897 |
| France Multiple Choice | 0 | - | 4.38 | 40,700 |
| History of France | 0 | - | 4.59 | 56,801 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,460 |
| Ancient Greek Words | 0 | - | 4.93 | 111,307 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,983 |
| The Vikings! | 0 | - | 4.46 | 28,317 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,019 |
| The Portuguese Empire | 0 | - | 4.58 | 12,045 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,009 |
| American to British Word Translation | 0 | - | 4.14 | 138,707 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,852 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,549 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,589 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,572 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,434 |
| Champions League Top 4 | 0 | - | 4.77 | 135,654 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,588 |
| Countries of Africa | 0 | - | 5.00 | 2,529,045 |
| Australia Map Quiz | 0 | - | 4.95 | 343,757 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,240 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,883 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,207 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,538 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,718 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,367 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,211 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,874 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,476 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,726 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,599 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,988 |
| European Geography A-Z | 0 | - | 4.29 | 49,183 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,282 |
| Austria... or Australia? | 0 | - | 4.68 | 104,220 |
| Famous French People | 0 | - | 4.06 | 34,557 |
| Word Chain - France | 0 | - | 4.38 | 42,731 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,930 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,874 |
| Italian Foods | 0 | - | 4.30 | 72,618 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,236 |
| The Mafia Quiz | 0 | - | 4.46 | 23,292 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,997 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Canary Islands | 0 | - | 4.62 | 17,458 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,579 |
| British Spellings | 0 | - | 4.06 | 99,399 |
| British Groups of Things | 0 | - | 4.25 | 82,829 |
| British Acronyms | 0 | - | 4.39 | 45,751 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,012 |
| British Monopoly Board | 0 | - | 4.52 | 41,136 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,649 |
| Geography of Scotland | 0 | - | 4.63 | 21,585 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,653 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,855 |
| Flags of Africa Quiz | 0 | - | 5.00 | 468,962 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,602 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,357 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,962 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,039 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,117 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,596 |
| African Island Countries | 0 | - | 4.96 | 101,388 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,001 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,102 |
| Australian States and Territories | 0 | - | 4.96 | 141,655 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,225 |
| Australia True or False | 0 | - | 4.87 | 56,752 |
| Flags of North and South America | 0 | - | 4.99 | 371,732 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,501 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,062 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,242 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,010 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,143 |
| North America Map Quiz | 0 | - | 4.98 | 247,524 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,632 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,085 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,006 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,021 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,777 |
