| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,776 |
| Official European Union Languages | 0 | - | 4.97 | 239,878 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,707 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,663 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,946 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,632 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,061 |
| Slavic Languages | 0 | - | 4.67 | 54,715 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,338 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,065 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,892 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,997 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,595 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,513 |
| Celtic Nations | 0 | - | 4.61 | 47,106 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,059 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,900 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,038 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,240 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,826 |
| Slavic Countries | 0 | - | 4.96 | 112,418 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,709 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,475 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,978 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,122 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,762 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,326 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,025 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,808 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,945 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,025 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,504 |
| States of Germany | 0 | - | 4.95 | 154,649 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,730 |
| Regions of Italy | 0 | - | 4.92 | 77,140 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,827 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,410 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,796 |
| Champions League Winners | 0 | - | 4.92 | 1,016,691 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,767 |
| Geography of Russia | 0 | - | 4.57 | 21,607 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,068 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,844 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,010 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,015 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,024 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,776 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,604 |
| Departments of France | 0 | - | 4.93 | 55,232 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,753 |
| England or Wales? | 0 | - | 4.94 | 45,985 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,251 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,755 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,724 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,363 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,724 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,981 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,296 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,033 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,063 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,041 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,106 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,255 |
| Name that Greek Letter | 0 | - | 4.93 | 325,078 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,747 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,638 |
| Languages of Spain | 0 | - | 4.36 | 23,449 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 222,746 |
| Famous Russians | 0 | - | 4.16 | 23,917 |
| Word Chain - Russia | 0 | - | 4.33 | 15,798 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,882 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,834 |
| The Trojan War | 0 | - | 4.83 | 40,007 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,022 |
| History of Italy | 0 | - | 4.55 | 32,160 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,410 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,617 |
| Roman Emperors | 0 | - | 4.95 | 121,280 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,830 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,435 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,809 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 32,684 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,478 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,278 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,674 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,135 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,251 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,197 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,674 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,227 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,844 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,128 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,717 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,721 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,538 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,202 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,473 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,438 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,522 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,561 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,753 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,204 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,353 |
| Capitals of French Regions | 0 | - | 4.45 | 16,185 |
| Regions of France | 0 | - | 4.70 | 122,175 |
| France Immigration by Country | 0 | - | 4.70 | 76,957 |
| Famous Germans | 0 | - | 4.50 | 55,812 |
| German Groups of Things | 0 | - | 4.47 | 38,645 |
| Capitals of German States | 0 | - | 4.74 | 29,076 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,552 |
| Germany True or False? | 0 | - | 4.61 | 49,032 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,513 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,930 |
| Ancient Greek Words | 0 | - | 4.93 | 112,533 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,431 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,809 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,415 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,859 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,438 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,853 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,816 |
| Top World Languages | 0 | - | 4.92 | 830,350 |
| Official Languages of South Africa | 0 | - | 4.57 | 26,250 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,719 |
| Australian Capitals | 0 | - | 4.92 | 62,839 |
| European Physical Geography | 0 | - | 4.26 | 33,601 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,476 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,139 |
| Ukraine Country Quiz | 0 | - | 4.43 | 48,002 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,797 |
| Romania Country Quiz | 0 | - | 4.63 | 54,156 |
| History of Austria | 0 | - | 4.70 | 17,978 |
| Geography of the French Empire | 0 | - | 4.45 | 27,221 |
| The French Revolution | 0 | - | 4.47 | 24,153 |
| France Multiple Choice | 0 | - | 4.39 | 40,857 |
| History of France | 0 | - | 4.61 | 57,656 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,563 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,987 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,534 |
| The Vikings! | 0 | - | 4.46 | 28,409 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,398 |
| The Portuguese Empire | 0 | - | 4.58 | 12,113 |
| American to British Word Translation | 0 | - | 4.14 | 139,738 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,391 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,826 |
| Champions League Top 4 | 0 | - | 4.78 | 139,253 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,785 |
| Asia Map Quiz | 0 | - | 4.99 | 925,660 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,422 |
| Africa Map Quiz | 0 | - | 5.00 | 2,129,372 |
| Countries by Official Language | 0 | - | 4.95 | 196,090 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,448 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,746 |
| Countries in their Native Language | 0 | - | 4.99 | 199,819 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,016 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,509 |
| Australia Map Quiz | 0 | - | 4.95 | 346,260 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,094 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,075 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,948 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,940 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,338 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,333 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,594 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,299 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,067 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,658 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,301 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,686 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,665 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,906 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,969 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,266 |
| European Geography A-Z | 0 | - | 4.29 | 49,491 |
| Country Codes of Europe | 0 | - | 3.45 | 13,839 |
| The Only European Country ... | 0 | - | 4.91 | 219,220 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,627 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,366 |
| Lithuania Country Quiz | 0 | - | 4.63 | 31,807 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,219 |
| Austria... or Australia? | 0 | - | 4.67 | 104,783 |
| Famous French People | 0 | - | 4.05 | 36,123 |
| Presidents of France | 0 | - | 4.25 | 24,346 |
| Word Chain - France | 0 | - | 4.38 | 42,946 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,250 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,053 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,964 |
| Italian Foods | 0 | - | 4.30 | 73,302 |
| Countries Italy Declared War On | 0 | - | 4.70 | 46,037 |
| The Mafia Quiz | 0 | - | 4.46 | 23,441 |
| History of The Netherlands | 0 | - | 4.46 | 17,557 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,121 |
| Canary Islands | 0 | - | 4.62 | 17,543 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,934 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,093 |
| British Spellings | 0 | - | 4.06 | 99,613 |
| British Groups of Things | 0 | - | 4.26 | 83,027 |
| British Acronyms | 0 | - | 4.40 | 45,949 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,117 |
