| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,892 |
| Official European Union Languages | 0 | - | 4.97 | 237,806 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,413 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,067 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,646 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,814 |
| Slavic Languages | 0 | - | 4.68 | 54,196 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,787 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,692 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,675 |
| History of Russia Quiz | 0 | - | 4.49 | 31,859 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,344 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,583 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,931 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,332 |
| Celtic Nations | 0 | - | 4.69 | 46,881 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,150 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,534 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,795 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,828 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,584 |
| Slavic Countries | 0 | - | 4.96 | 111,329 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,217 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,802 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,037 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,106 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,380 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,658 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,672 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,742 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,451 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,586 |
| States of Germany | 0 | - | 4.96 | 151,324 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,677 |
| Regions of Italy | 0 | - | 4.92 | 75,309 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 50,865 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,327 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,796 |
| Champions League Winners | 0 | - | 4.92 | 1,001,664 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,326 |
| Geography of Russia | 0 | - | 4.57 | 21,495 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,827 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,631 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,078 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,866 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,265 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,143 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,223 |
| Departments of France | 0 | - | 4.93 | 53,453 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,468 |
| England or Wales? | 0 | - | 4.94 | 45,518 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,407 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,521 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,635 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,353 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,007 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,195 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,616 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,987 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,747 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,692 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,667 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,114 |
| Name that Greek Letter | 0 | - | 4.93 | 322,748 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,537 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,381 |
| Languages of Spain | 0 | - | 4.36 | 23,252 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,541 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,503 |
| Famous Russians | 0 | - | 4.16 | 23,783 |
| Word Chain - Russia | 0 | - | 4.33 | 15,729 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,663 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,177 |
| The Trojan War | 0 | - | 4.83 | 39,595 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,291 |
| History of Italy | 0 | - | 4.55 | 31,911 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,523 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,330 |
| Roman Emperors | 0 | - | 4.95 | 119,420 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,586 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,115 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,342 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,504 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,734 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,164 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,137 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,025 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,484 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,388 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,060 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,836 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,467 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,654 |
| Europe Map Quiz | 0 | - | 5.00 | 4,748,827 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,159 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,811 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,095 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,136 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,824 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,925 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,797 |
| Capitals of French Regions | 0 | - | 4.45 | 16,025 |
| Regions of France | 0 | - | 4.77 | 120,105 |
| France Immigration by Country | 0 | - | 4.72 | 76,276 |
| Famous Germans | 0 | - | 4.50 | 54,879 |
| German Groups of Things | 0 | - | 4.46 | 38,399 |
| Capitals of German States | 0 | - | 4.74 | 28,901 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,230 |
| Germany True or False? | 0 | - | 4.61 | 48,677 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,770 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,782 |
| Ancient Greek Words | 0 | - | 4.93 | 111,183 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,964 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,112 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,167 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,924 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,220 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,243 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,111 |
| Top World Languages | 0 | - | 4.92 | 818,238 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,863 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,124 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,150 |
| Australian Capitals | 0 | - | 4.92 | 62,671 |
| European Physical Geography | 0 | - | 4.26 | 33,439 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,058 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,876 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,537 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,264 |
| Romania Country Quiz | 0 | - | 4.63 | 53,621 |
| History of Austria | 0 | - | 4.70 | 17,815 |
| Geography of the French Empire | 0 | - | 4.45 | 27,008 |
| The French Revolution | 0 | - | 4.46 | 23,877 |
| France Multiple Choice | 0 | - | 4.38 | 40,687 |
| History of France | 0 | - | 4.59 | 56,677 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,442 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,426 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,879 |
| The Vikings! | 0 | - | 4.46 | 28,300 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,940 |
| The Portuguese Empire | 0 | - | 4.58 | 12,035 |
| American to British Word Translation | 0 | - | 4.13 | 138,461 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,472 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,483 |
| Champions League Top 4 | 0 | - | 4.77 | 135,193 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,444,703 |
| Asia Map Quiz | 0 | - | 4.99 | 911,893 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,821 |
| Countries by Official Language | 0 | - | 4.95 | 194,247 |
| Places in their Native Language #1 | 0 | - | 4.84 | 240,889 |
| Places in their Native Language #2 | 0 | - | 4.83 | 130,339 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,071 |
| Countries in their Native Language | 0 | - | 4.99 | 197,846 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,011 |
| Countries of Africa | 0 | - | 5.00 | 2,524,020 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,367 |
| African East Coast | 0 | - | 4.96 | 95,614 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,442 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,273 |
| Australia Map Quiz | 0 | - | 4.94 | 343,443 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,760 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,307 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,504 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,136 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,457 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,468 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,884 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,141 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,760 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,701 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,388 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,105 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,451 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,552 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,672 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,470 |
| European Geography A-Z | 0 | - | 4.29 | 49,133 |
| Country Codes of Europe | 0 | - | 3.43 | 13,683 |
| The Only European Country ... | 0 | - | 4.91 | 215,423 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,473 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,278 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,914 |
| Austria... or Australia? | 0 | - | 4.68 | 104,147 |
| Presidents of France | 0 | - | 4.25 | 23,999 |
| Word Chain - France | 0 | - | 4.38 | 42,698 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,885 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,852 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,013 |
| Italian Foods | 0 | - | 4.31 | 72,520 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,177 |
| The Mafia Quiz | 0 | - | 4.46 | 23,259 |
| History of The Netherlands | 0 | - | 4.46 | 17,375 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,997 |
| Canary Islands | 0 | - | 4.61 | 17,445 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,860 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,489 |
| British Spellings | 0 | - | 4.06 | 99,366 |
| British Groups of Things | 0 | - | 4.25 | 82,800 |
| British Acronyms | 0 | - | 4.39 | 45,722 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,002 |
