| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,559 |
| Official European Union Languages | 0 | - | 4.97 | 236,459 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,659 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,222 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,863 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,055 |
| Slavic Languages | 0 | - | 4.67 | 53,957 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,520 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,548 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,075 |
| History of Russia Quiz | 0 | - | 4.49 | 31,784 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,356 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,367 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,582 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,232 |
| Celtic Nations | 0 | - | 4.69 | 46,806 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,823 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,708 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,750 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,212 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,151 |
| Slavic Countries | 0 | - | 4.96 | 110,815 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,033 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,631 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,643 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,233 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,299 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,180 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,182 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,733 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,150 |
| States of Germany | 0 | - | 4.96 | 149,949 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,989 |
| Regions of Italy | 0 | - | 4.92 | 74,654 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,779 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,262 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,098 |
| Champions League Winners | 0 | - | 4.92 | 995,866 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,124 |
| Geography of Russia | 0 | - | 4.57 | 21,424 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,508 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,695 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,400 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,415 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,109 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,084 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,826 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,018 |
| Departments of France | 0 | - | 4.93 | 52,749 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,354 |
| England or Wales? | 0 | - | 4.94 | 45,303 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,413 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,439 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,597 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,965 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,947 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,774 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,356 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,669 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,598 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,527 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,507 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,630 |
| Name that Greek Letter | 0 | - | 4.94 | 321,551 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,423 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,238 |
| Languages of Spain | 0 | - | 4.36 | 23,143 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,447 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,548 |
| Famous Russians | 0 | - | 4.16 | 23,723 |
| Word Chain - Russia | 0 | - | 4.33 | 15,684 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,557 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,880 |
| The Trojan War | 0 | - | 4.83 | 39,419 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,481 |
| History of Italy | 0 | - | 4.55 | 31,807 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,135 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,022 |
| Roman Emperors | 0 | - | 4.95 | 118,407 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,476 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,974 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,052 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,422 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,349 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,854 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,782 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,660 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,183 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,833 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,638 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,602 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,004 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,272 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,804 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,978 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,605 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,929 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,967 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,571 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,783 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,541 |
| Capitals of French Regions | 0 | - | 4.45 | 15,982 |
| Regions of France | 0 | - | 4.78 | 119,166 |
| France Immigration by Country | 0 | - | 4.72 | 75,940 |
| Famous Germans | 0 | - | 4.50 | 54,595 |
| German Groups of Things | 0 | - | 4.46 | 38,297 |
| Capitals of German States | 0 | - | 4.74 | 28,805 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,090 |
| Germany True or False? | 0 | - | 4.61 | 48,518 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,434 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,694 |
| Ancient Greek Words | 0 | - | 4.92 | 110,634 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,306 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,760 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,037 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,914 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,975 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,281 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,008 |
| Top World Languages | 0 | - | 4.92 | 812,691 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,700 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,044 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,995 |
| Australian Capitals | 0 | - | 4.92 | 62,589 |
| European Physical Geography | 0 | - | 4.26 | 33,372 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,839 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,764 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,294 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,006 |
| Romania Country Quiz | 0 | - | 4.63 | 53,325 |
| History of Austria | 0 | - | 4.70 | 17,742 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,773 |
| France Multiple Choice | 0 | - | 4.38 | 40,629 |
| History of France | 0 | - | 4.59 | 55,973 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,380 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,365 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,596 |
| The Vikings! | 0 | - | 4.45 | 28,239 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,679 |
| The Portuguese Empire | 0 | - | 4.54 | 11,986 |
| American to British Word Translation | 0 | - | 4.06 | 117,036 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,195 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,387 |
| Champions League Top 4 | 0 | - | 4.77 | 133,688 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,317 |
| Asia Map Quiz | 0 | - | 4.99 | 906,629 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,522 |
| Countries by Official Language | 0 | - | 4.95 | 192,702 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,372 |
| Places in their Native Language #2 | 0 | - | 4.85 | 122,942 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,031 |
| Countries in their Native Language | 0 | - | 4.99 | 196,558 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,735 |
| Countries of Africa | 0 | - | 5.00 | 2,506,449 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,778 |
| African East Coast | 0 | - | 4.96 | 95,001 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,893 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,759 |
| Australia Map Quiz | 0 | - | 4.94 | 342,376 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,043 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,024 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,178 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,882 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,217 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,168 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,414 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,859 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,235 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,453 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,127 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,898 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,280 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,385 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,488 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,460 |
| European Geography A-Z | 0 | - | 4.28 | 48,983 |
| Country Codes of Europe | 0 | - | 3.46 | 13,649 |
| The Only European Country ... | 0 | - | 4.91 | 213,693 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,446 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,229 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,757 |
| Austria... or Australia? | 0 | - | 4.68 | 103,842 |
| Presidents of France | 0 | - | 4.25 | 23,891 |
| Word Chain - France | 0 | - | 4.38 | 42,572 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,759 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,765 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,843 |
| Italian Foods | 0 | - | 4.30 | 72,149 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,929 |
| The Mafia Quiz | 0 | - | 4.46 | 23,201 |
| History of The Netherlands | 0 | - | 4.46 | 17,305 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,954 |
| Canary Islands | 0 | - | 4.61 | 17,395 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,088 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,125 |
| British Spellings | 0 | - | 4.07 | 99,197 |
| British Groups of Things | 0 | - | 4.25 | 82,664 |
| British Acronyms | 0 | - | 4.39 | 45,613 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,942 |
