| European Countries by First 2 Letters | 0 | - | 4.95 | 527,232 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,541 |
| History of Russia Quiz | 0 | - | 4.49 | 31,828 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,615 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,776 |
| Official European Union Languages | 0 | - | 4.97 | 237,409 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,176 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,071 |
| Geography of Russia | 0 | - | 4.57 | 21,460 |
| Slavic Languages | 0 | - | 4.68 | 54,099 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,688 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,637 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,284 |
| Celtic Nations | 0 | - | 4.69 | 46,855 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,014 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,933 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,008 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,577 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,399 |
| Slavic Countries | 0 | - | 4.96 | 111,106 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,145 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,687 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,714 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,541 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,461 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,255 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,561 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,153 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,893 |
| Word Chain - Russia | 0 | - | 4.33 | 15,710 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,409 |
| States of Germany | 0 | - | 4.96 | 150,772 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,249 |
| Regions of Italy | 0 | - | 4.92 | 75,021 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,019 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,925 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,611 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,592 |
| Champions League Winners | 0 | - | 4.92 | 999,313 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,333 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,839 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,768 |
| Departments of France | 0 | - | 4.93 | 53,125 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,412 |
| England or Wales? | 0 | - | 4.94 | 45,443 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,989 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,490 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,617 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,183 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,616 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,496 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,309 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,032 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,261 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,598 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,673 |
| Name that Greek Letter | 0 | - | 4.94 | 322,222 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,048 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,443 |
| Famous Russians | 0 | - | 4.16 | 23,756 |
| The Trojan War | 0 | - | 4.83 | 39,518 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,969 |
| History of Italy | 0 | - | 4.55 | 31,873 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,359 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,195 |
| Roman Emperors | 0 | - | 4.95 | 118,980 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,536 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,056 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,904 |
| Australian Capitals | 0 | - | 4.92 | 62,635 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,603 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,067 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,037 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,913 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,382 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,189 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,973 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,748 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,122 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,500 |
| Europe Map Quiz | 0 | - | 5.00 | 4,740,969 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,079 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,720 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,030 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,067 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,724 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,650 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,040 |
| Capitals of French Regions | 0 | - | 4.45 | 16,010 |
| Regions of France | 0 | - | 4.78 | 119,704 |
| France Immigration by Country | 0 | - | 4.72 | 76,109 |
| Famous Germans | 0 | - | 4.50 | 54,767 |
| German Groups of Things | 0 | - | 4.46 | 38,356 |
| Capitals of German States | 0 | - | 4.74 | 28,876 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,166 |
| Germany True or False? | 0 | - | 4.61 | 48,617 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,644 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,682 |
| Ancient Greek Words | 0 | - | 4.93 | 110,979 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,762 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,976 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,117 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,636 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,721 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,938 |
| Africa Map Quiz | 0 | - | 5.00 | 2,108,558 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,459 |
| European Physical Geography | 0 | - | 4.26 | 33,409 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,828 |
| History of Austria | 0 | - | 4.70 | 17,783 |
| Geography of the French Empire | 0 | - | 4.45 | 26,977 |
| The French Revolution | 0 | - | 4.46 | 23,843 |
| France Multiple Choice | 0 | - | 4.38 | 40,667 |
| History of France | 0 | - | 4.59 | 56,457 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,413 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,648 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,760 |
| The Vikings! | 0 | - | 4.46 | 28,272 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,783 |
| The Portuguese Empire | 0 | - | 4.58 | 12,013 |
| American to British Word Translation | 0 | - | 4.13 | 137,717 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,781 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,368 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,437 |
| Champions League Top 4 | 0 | - | 4.77 | 134,590 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,989 |
| Asia Map Quiz | 0 | - | 4.99 | 909,529 |
| Countries of Africa | 0 | - | 5.00 | 2,516,493 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,118 |
| African East Coast | 0 | - | 4.96 | 95,374 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,233 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,070 |
| Australia Map Quiz | 0 | - | 4.94 | 342,992 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,262 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,757 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,406 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,624 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,932 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,373 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,800 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,041 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,662 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,621 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,309 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,036 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,376 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,471 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,603 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,077 |
| European Geography A-Z | 0 | - | 4.28 | 49,080 |
| Country Codes of Europe | 0 | - | 3.46 | 13,666 |
| The Only European Country ... | 0 | - | 4.91 | 214,730 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,058 |
| Austria... or Australia? | 0 | - | 4.68 | 104,031 |
| Presidents of France | 0 | - | 4.25 | 23,951 |
| Word Chain - France | 0 | - | 4.38 | 42,643 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,841 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,818 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,559 |
| Italian Foods | 0 | - | 4.31 | 72,374 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,089 |
| The Mafia Quiz | 0 | - | 4.46 | 23,227 |
| History of The Netherlands | 0 | - | 4.46 | 17,350 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,982 |
| Canary Islands | 0 | - | 4.61 | 17,427 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,308 |
| British Spellings | 0 | - | 4.07 | 99,329 |
| British Groups of Things | 0 | - | 4.25 | 82,743 |
| British Acronyms | 0 | - | 4.39 | 45,673 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,981 |
| British Monopoly Board | 0 | - | 4.52 | 41,082 |
| Geography of Scotland | 0 | - | 4.63 | 21,521 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,990 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,378,423 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,580 |
| Flags of Africa Quiz | 0 | - | 5.00 | 465,645 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,017 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,797 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,550 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,726 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,528 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,986 |
| African Island Countries | 0 | - | 4.96 | 101,042 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,198 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,892 |
| Australian States and Territories | 0 | - | 4.96 | 141,206 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,095 |
| Australia True or False | 0 | - | 4.87 | 56,614 |
| Flags of North and South America | 0 | - | 4.99 | 369,209 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,322 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,413 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,651 |
| South America Map Quiz | 0 | - | 5.00 | 1,543,329 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,015,551 |
| North America Map Quiz | 0 | - | 4.98 | 245,926 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,479 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,208 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,189 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,803 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,619 |
