| European Countries by First 2 Letters | 0 | - | 4.95 | 526,639 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,841 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,275 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,654 |
| Official European Union Languages | 0 | - | 4.97 | 237,084 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,869 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,535 |
| Slavic Languages | 0 | - | 4.67 | 54,027 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,576 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,589 |
| History of Russia Quiz | 0 | - | 4.49 | 31,803 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,589 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,254 |
| Celtic Nations | 0 | - | 4.69 | 46,830 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,917 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,083 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,269 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,369 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,286 |
| Slavic Countries | 0 | - | 4.96 | 110,942 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,073 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,534 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,426 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,302 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,378 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,920 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,316 |
| States of Germany | 0 | - | 4.96 | 150,331 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,117 |
| Regions of Italy | 0 | - | 4.92 | 74,840 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,901 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,487 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,397 |
| Champions League Winners | 0 | - | 4.92 | 997,404 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,189 |
| Geography of Russia | 0 | - | 4.57 | 21,438 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,582 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,558 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,780 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,433 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,357 |
| Departments of France | 0 | - | 4.93 | 52,938 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,389 |
| England or Wales? | 0 | - | 4.94 | 45,366 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,669 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,462 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,608 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,047 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,242 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,889 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,542 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,608 |
| Name that Greek Letter | 0 | - | 4.94 | 321,851 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,447 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,269 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,690 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,234 |
| Word Chain - Russia | 0 | - | 4.33 | 15,692 |
| The Trojan War | 0 | - | 4.83 | 39,468 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,711 |
| History of Italy | 0 | - | 4.55 | 31,842 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,232 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,116 |
| Roman Emperors | 0 | - | 4.95 | 118,618 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,497 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,003 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,269 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,466 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,963 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,916 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,770 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,278 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,008 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,723 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,677 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,058 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,372 |
| Europe Map Quiz | 0 | - | 5.00 | 4,734,484 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,020 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,651 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,978 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,016 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,640 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,198 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,658 |
| Capitals of French Regions | 0 | - | 4.45 | 15,992 |
| Regions of France | 0 | - | 4.78 | 119,405 |
| France Immigration by Country | 0 | - | 4.72 | 76,017 |
| Famous Germans | 0 | - | 4.50 | 54,667 |
| German Groups of Things | 0 | - | 4.46 | 38,322 |
| Capitals of German States | 0 | - | 4.74 | 28,820 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,113 |
| Germany True or False? | 0 | - | 4.61 | 48,556 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,525 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,870 |
| Ancient Greek Words | 0 | - | 4.92 | 110,796 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,612 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,876 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,082 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,058 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,301 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,445 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,710 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,053 |
| Australian Capitals | 0 | - | 4.92 | 62,599 |
| European Physical Geography | 0 | - | 4.26 | 33,382 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,800 |
| History of Austria | 0 | - | 4.70 | 17,766 |
| Geography of the French Empire | 0 | - | 4.45 | 26,949 |
| The French Revolution | 0 | - | 4.46 | 23,804 |
| France Multiple Choice | 0 | - | 4.38 | 40,645 |
| History of France | 0 | - | 4.59 | 56,199 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,393 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,935 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,664 |
| The Vikings! | 0 | - | 4.46 | 28,254 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,731 |
| The Portuguese Empire | 0 | - | 4.54 | 12,001 |
| American to British Word Translation | 0 | - | 4.11 | 135,253 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,739 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,277 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,409 |
| Champions League Top 4 | 0 | - | 4.77 | 134,069 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,866 |
| Asia Map Quiz | 0 | - | 4.99 | 907,864 |
| Countries of Africa | 0 | - | 5.00 | 2,510,790 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,901 |
| African East Coast | 0 | - | 4.96 | 95,147 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,022 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,909 |
| Australia Map Quiz | 0 | - | 4.94 | 342,680 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,465 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,344 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,258 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,218 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,537 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,274 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,711 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,944 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,331 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,539 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,203 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,959 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,329 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,429 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,544 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,737 |
| European Geography A-Z | 0 | - | 4.28 | 49,029 |
| Country Codes of Europe | 0 | - | 3.46 | 13,658 |
| The Only European Country ... | 0 | - | 4.91 | 214,128 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,749 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,242 |
| Austria... or Australia? | 0 | - | 4.68 | 103,925 |
| Presidents of France | 0 | - | 4.25 | 23,922 |
| Word Chain - France | 0 | - | 4.38 | 42,599 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,803 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,788 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,174 |
| Italian Foods | 0 | - | 4.31 | 72,255 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,015 |
| The Mafia Quiz | 0 | - | 4.46 | 23,214 |
| History of The Netherlands | 0 | - | 4.46 | 17,327 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,967 |
| Canary Islands | 0 | - | 4.61 | 17,412 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,295 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,207 |
| British Spellings | 0 | - | 4.07 | 99,272 |
| British Groups of Things | 0 | - | 4.25 | 82,710 |
| British Acronyms | 0 | - | 4.39 | 45,641 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,966 |
| British Monopoly Board | 0 | - | 4.52 | 41,045 |
| Geography of Scotland | 0 | - | 4.63 | 21,499 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,595 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,707 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,476 |
| Flags of Africa Quiz | 0 | - | 5.00 | 464,186 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,754 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,649 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,375 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,564 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,275 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,614 |
| African Island Countries | 0 | - | 4.96 | 100,874 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,852 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,781 |
| Australian States and Territories | 0 | - | 4.96 | 141,008 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,042 |
| Australia True or False | 0 | - | 4.87 | 56,546 |
| Flags of North and South America | 0 | - | 4.99 | 368,074 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,195 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,242 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,355 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,944 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,013,008 |
| North America Map Quiz | 0 | - | 4.98 | 244,888 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,405 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,388 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,417 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,693 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,540 |
