| European Countries by First 2 Letters | 0 | - | 4.95 | 526,400 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,587 |
| Official European Union Languages | 0 | - | 4.97 | 236,664 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,710 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,243 |
| Celtic Nations | 0 | - | 4.69 | 46,814 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,545 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,570 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,243 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,860 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,875 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,957 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,051 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,152 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,010 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,528 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,441 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,555 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,341 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,231 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,282 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,812 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,026 |
| States of Germany | 0 | - | 4.96 | 150,108 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,029 |
| Regions of Italy | 0 | - | 4.92 | 74,737 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,826 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,371 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,204 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,122 |
| Champions League Winners | 0 | - | 4.92 | 996,522 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,452 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,600 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,999 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,071 |
| Slavic Languages | 0 | - | 4.67 | 53,990 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,433 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,251 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,583 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,247 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,196 |
| Departments of France | 0 | - | 4.93 | 52,845 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,372 |
| England or Wales? | 0 | - | 4.94 | 45,326 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,519 |
| Australian Capitals | 0 | - | 4.92 | 62,594 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,810 |
| Country Codes of Europe | 0 | - | 3.46 | 13,654 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,146 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,849 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,568 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,520 |
| Capitals of French Regions | 0 | - | 4.45 | 15,988 |
| Capitals of German States | 0 | - | 4.74 | 28,813 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,101 |
| History of Italy | 0 | - | 4.55 | 31,819 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,172 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,485 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,983 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,509 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,407 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,420 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,921 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,870 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,728 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,234 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,917 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,684 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,639 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,031 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,321 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,995 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,621 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,948 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,988 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,609 |
| Regions of France | 0 | - | 4.78 | 119,284 |
| France Immigration by Country | 0 | - | 4.72 | 75,973 |
| Famous Germans | 0 | - | 4.50 | 54,624 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Germany True or False? | 0 | - | 4.61 | 48,537 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,473 |
| The Trojan War | 0 | - | 4.83 | 39,436 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,008 |
| Name that Greek Letter | 0 | - | 4.94 | 321,705 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,550 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,538 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,058 |
| Roman Emperors | 0 | - | 4.95 | 118,502 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,835 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,051 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,973 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,560 |
| Asia Map Quiz | 0 | - | 4.99 | 907,147 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,826 |
| African East Coast | 0 | - | 4.96 | 95,061 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,943 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,809 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,174 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,215 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,030 |
| European Physical Geography | 0 | - | 4.26 | 33,375 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,592 |
| The Only European Country ... | 0 | - | 4.91 | 213,888 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,572 |
| Geography of Russia | 0 | - | 4.57 | 21,428 |
| History of Austria | 0 | - | 4.70 | 17,754 |
| Presidents of France | 0 | - | 4.25 | 23,905 |
| Geography of the French Empire | 0 | - | 4.48 | 26,937 |
| The French Revolution | 0 | - | 4.46 | 23,785 |
| France Multiple Choice | 0 | - | 4.38 | 40,635 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,386 |
| The Vikings! | 0 | - | 4.46 | 28,246 |
| The Portuguese Empire | 0 | - | 4.54 | 11,993 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,960 |
| American to British Word Translation | 0 | - | 4.06 | 121,929 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,708 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,486 |
| Countries of Africa | 0 | - | 5.00 | 2,508,261 |
| Australia Map Quiz | 0 | - | 4.94 | 342,515 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,340 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,780 |
| History of France | 0 | - | 4.59 | 56,074 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,262 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,705 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,227 |
| Champions League Top 4 | 0 | - | 4.77 | 133,856 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,986 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,165 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,063 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,230 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,675 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,914 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,291 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,502 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,180 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,931 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,302 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,401 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,521 |
| European Geography A-Z | 0 | - | 4.28 | 49,008 |
| Word Chain - France | 0 | - | 4.38 | 42,584 |
| Ancient Greek Words | 0 | - | 4.92 | 110,713 |
| Italian Foods | 0 | - | 4.31 | 72,209 |
| The Mafia Quiz | 0 | - | 4.46 | 23,207 |
| History of The Netherlands | 0 | - | 4.46 | 17,313 |
| Canary Islands | 0 | - | 4.61 | 17,405 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,157 |
| British Spellings | 0 | - | 4.07 | 99,224 |
| British Groups of Things | 0 | - | 4.25 | 82,677 |
| British Acronyms | 0 | - | 4.39 | 45,621 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,950 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,398 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,135 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,359 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,440 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,496 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,642 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,588 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,292 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,510 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,135 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,484 |
| African Island Countries | 0 | - | 4.96 | 100,801 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,676 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,717 |
| Australian States and Territories | 0 | - | 4.96 | 140,921 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,022 |
| Australia Country Quiz | 0 | - | 4.43 | 69,287 |
| Australia True or False | 0 | - | 4.87 | 56,513 |
| Flags of North and South America | 0 | - | 4.99 | 367,352 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,160 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,176 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,249 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,328 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,853 |
| North America Map Quiz | 0 | - | 4.98 | 244,512 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,380 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,980 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,021 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,625 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,501 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,978 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,947 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,725 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,298 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,374 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,481 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,480 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,278 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,214 |
| Slavic Countries | 0 | - | 4.96 | 110,873 |
| Austria... or Australia? | 0 | - | 4.68 | 103,879 |
| Geography of Germany | 0 | - | 4.35 | 17,086 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,780 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,774 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,962 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,601 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,624 |
