| European Countries by First 2 Letters | 0 | - | 4.95 | 528,689 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,995 |
| Official European Union Languages | 0 | - | 4.97 | 238,120 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,605 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,485 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,878 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,755 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,082 |
| Name that Greek Letter | 0 | - | 4.93 | 323,080 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,358 |
| Celtic Nations | 0 | - | 4.69 | 46,908 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,846 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,667 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,156 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,245 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,958 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,595 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,283 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,871 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,170 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,245 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,897 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,388 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,937 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,694 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,380 |
| States of Germany | 0 | - | 4.96 | 151,897 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,882 |
| Regions of Italy | 0 | - | 4.92 | 75,537 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,862 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,630 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,999 |
| American to British Word Translation | 0 | - | 4.14 | 138,739 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,859 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,659 |
| Champions League Winners | 0 | - | 4.92 | 1,003,685 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,073 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,555 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,643 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,485 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,362 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,591 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,273 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,665 |
| Slavic Languages | 0 | - | 4.68 | 54,269 |
| Departments of France | 0 | - | 4.93 | 53,776 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,576 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,515 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,419 |
| British Spellings | 0 | - | 4.06 | 99,403 |
| England or Wales? | 0 | - | 4.94 | 45,599 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,733 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,929 |
| English Words of Arabic Origin | 0 | - | 4.54 | 49,718 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,860 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,344 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,225 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,715 |
| Languages of Spain | 0 | - | 4.36 | 23,283 |
| British to American Word Translation | 0 | - | 3.74 | 254,999 |
| British Foods by Description | 0 | - | 3.94 | 48,313 |
| British and American Word Differences | 0 | - | 2.63 | 46,857 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,667 |
| History of Russia Quiz | 0 | - | 4.49 | 31,879 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,695 |
| History of Italy | 0 | - | 4.55 | 31,935 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,639 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,611 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,164 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,317 |
| Capitals of French Regions | 0 | - | 4.45 | 16,037 |
| Capitals of German States | 0 | - | 4.74 | 28,930 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,282 |
| The Trojan War | 0 | - | 4.83 | 39,647 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,529 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,418 |
| Roman Emperors | 0 | - | 4.95 | 119,653 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,569 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,550 |
| Australian Capitals | 0 | - | 4.92 | 62,694 |
| European Geography By Letter - A | 0 | - | 4.51 | 145,006 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,606 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,344 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,077 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,140 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,144 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,225 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,563 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,247 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,803 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,135 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,207 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,863 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,152 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,181 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,366 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,631 |
| Regions of France | 0 | - | 4.75 | 120,403 |
| France Immigration by Country | 0 | - | 4.70 | 76,400 |
| German Loan Words | 0 | - | 4.27 | 135,724 |
| Famous Germans | 0 | - | 4.50 | 55,167 |
| German Groups of Things | 0 | - | 4.46 | 38,437 |
| Germany True or False? | 0 | - | 4.61 | 48,738 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,871 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,542 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,288 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,225 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,234 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,065 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,464 |
| Asia Map Quiz | 0 | - | 4.99 | 914,417 |
| Elemental Words | 0 | - | 4.96 | 52,221 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,616 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,595 |
| African East Coast | 0 | - | 4.96 | 95,824 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,601 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,449 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,725 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,577 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,531 |
| European Physical Geography | 0 | - | 4.26 | 33,470 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,820 |
| Country Codes of Europe | 0 | - | 3.43 | 13,700 |
| The Only European Country ... | 0 | - | 4.91 | 215,974 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,765 |
| Geography of Russia | 0 | - | 4.57 | 21,508 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,906 |
| History of Austria | 0 | - | 4.70 | 17,834 |
| Presidents of France | 0 | - | 4.25 | 24,032 |
| Geography of the French Empire | 0 | - | 4.45 | 27,025 |
| The French Revolution | 0 | - | 4.46 | 23,901 |
| France Multiple Choice | 0 | - | 4.38 | 40,707 |
| History of France | 0 | - | 4.59 | 56,824 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,464 |
| Ancient Greek Words | 0 | - | 4.93 | 111,347 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,999 |
| The Vikings! | 0 | - | 4.46 | 28,319 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,042 |
| The Portuguese Empire | 0 | - | 4.58 | 12,047 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,010 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,564 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,606 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,638 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,452 |
| Champions League Top 4 | 0 | - | 4.77 | 135,728 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,623 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,946 |
| Country Name Etymologies #1 | 0 | - | 4.97 | 158,752 |
| Country Name Etymologies #2 | 0 | - | 4.96 | 86,457 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,316 |
| Countries of Africa | 0 | - | 5.00 | 2,529,934 |
| Australia Map Quiz | 0 | - | 4.95 | 343,821 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,844 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,601 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,821 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,936 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,245 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,573 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,751 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,403 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,245 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,901 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,504 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,750 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,611 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,014 |
| European Geography A-Z | 0 | - | 4.29 | 49,196 |
| Austria... or Australia? | 0 | - | 4.68 | 104,230 |
| Famous French People | 0 | - | 4.06 | 34,883 |
| Word Chain - France | 0 | - | 4.38 | 42,740 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,936 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,875 |
| Italian Foods | 0 | - | 4.30 | 72,639 |
| The Mafia Quiz | 0 | - | 4.46 | 23,297 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,258 |
| History of The Netherlands | 0 | - | 4.46 | 17,407 |
| Canary Islands | 0 | - | 4.62 | 17,460 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,598 |
| British Groups of Things | 0 | - | 4.25 | 82,831 |
| British Acronyms | 0 | - | 4.39 | 45,757 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,017 |
| British Monopoly Board | 0 | - | 4.52 | 41,137 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,662 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,791 |
| Officially Recognized Languages of India | 0 | - | 4.38 | 31,270 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,864 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,224 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,637 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,381 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,991 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,071 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,155 |
| African Island Countries | 0 | - | 4.96 | 101,415 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,050 |
| Australian States and Territories | 0 | - | 4.96 | 141,690 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,229 |
| Australian Slang | 0 | - | 4.24 | 28,595 |
| Australia True or False | 0 | - | 4.87 | 56,765 |
| Flags of North and South America | 0 | - | 4.99 | 371,863 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,509 |
