| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,569 |
| Official European Union Languages | 0 | - | 4.97 | 236,476 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,680 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,265 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,922 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,103 |
| Slavic Languages | 0 | - | 4.67 | 53,965 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,526 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,556 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,099 |
| History of Russia Quiz | 0 | - | 4.49 | 31,788 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,386 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,371 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,594 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,237 |
| Celtic Nations | 0 | - | 4.69 | 46,807 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,830 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,768 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,807 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,224 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,168 |
| Slavic Countries | 0 | - | 4.96 | 110,829 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,040 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,737 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,655 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,237 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,313 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,191 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,207 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,751 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,170 |
| States of Germany | 0 | - | 4.96 | 149,984 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,994 |
| Regions of Italy | 0 | - | 4.92 | 74,676 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,786 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,284 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,126 |
| Champions League Winners | 0 | - | 4.92 | 996,044 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,130 |
| Geography of Russia | 0 | - | 4.57 | 21,424 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,513 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,701 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,402 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,450 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,152 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,113 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,834 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,025 |
| Departments of France | 0 | - | 4.93 | 52,771 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,357 |
| England or Wales? | 0 | - | 4.94 | 45,306 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,436 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,442 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,598 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,971 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,983 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,778 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,362 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,677 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,603 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,533 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,507 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,729 |
| Name that Greek Letter | 0 | - | 4.94 | 321,606 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,427 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,241 |
| Languages of Spain | 0 | - | 4.36 | 23,146 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,484 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,604 |
| Famous Russians | 0 | - | 4.16 | 23,724 |
| Word Chain - Russia | 0 | - | 4.33 | 15,685 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,559 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,888 |
| The Trojan War | 0 | - | 4.83 | 39,422 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,500 |
| History of Italy | 0 | - | 4.55 | 31,811 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,144 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,034 |
| Roman Emperors | 0 | - | 4.95 | 118,427 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,477 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,976 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,074 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,423 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,371 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,874 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,808 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,680 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,196 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,854 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,652 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,610 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,010 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,283 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,291 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,980 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,606 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,935 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,970 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,578 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,789 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,551 |
| Capitals of French Regions | 0 | - | 4.45 | 15,982 |
| Regions of France | 0 | - | 4.78 | 119,182 |
| France Immigration by Country | 0 | - | 4.72 | 75,950 |
| Famous Germans | 0 | - | 4.50 | 54,601 |
| German Groups of Things | 0 | - | 4.46 | 38,302 |
| Capitals of German States | 0 | - | 4.74 | 28,810 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,090 |
| Germany True or False? | 0 | - | 4.61 | 48,524 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,454 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,838 |
| Ancient Greek Words | 0 | - | 4.92 | 110,652 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,359 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,767 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,040 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,930 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,011 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,294 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,045 |
| Top World Languages | 0 | - | 4.92 | 812,821 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,884 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,045 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,127 |
| Australian Capitals | 0 | - | 4.92 | 62,592 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,845 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,767 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,301 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,014 |
| Romania Country Quiz | 0 | - | 4.63 | 53,332 |
| History of Austria | 0 | - | 4.70 | 17,743 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,776 |
| France Multiple Choice | 0 | - | 4.38 | 40,631 |
| History of France | 0 | - | 4.59 | 55,994 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,382 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,430 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,608 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,683 |
| The Portuguese Empire | 0 | - | 4.54 | 11,988 |
| American to British Word Translation | 0 | - | 4.06 | 117,045 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,205 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,390 |
| Champions League Top 4 | 0 | - | 4.77 | 133,730 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,480 |
| Asia Map Quiz | 0 | - | 4.99 | 906,768 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,527 |
| Countries by Official Language | 0 | - | 4.95 | 192,722 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,393 |
| Places in their Native Language #2 | 0 | - | 4.85 | 122,949 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,056 |
| Countries in their Native Language | 0 | - | 4.99 | 196,589 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,754 |
| Countries of Africa | 0 | - | 5.00 | 2,506,929 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,791 |
| African East Coast | 0 | - | 4.96 | 95,015 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,899 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,774 |
| Australia Map Quiz | 0 | - | 4.94 | 342,423 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,275 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,066 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,187 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,919 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,256 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,188 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,473 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,877 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,252 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,468 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,142 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,905 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,286 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,388 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,496 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,493 |
| European Geography A-Z | 0 | - | 4.28 | 48,987 |
| Country Codes of Europe | 0 | - | 3.46 | 13,651 |
| The Only European Country ... | 0 | - | 4.91 | 213,746 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,474 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,231 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,760 |
| Austria... or Australia? | 0 | - | 4.68 | 103,850 |
| Presidents of France | 0 | - | 4.25 | 23,895 |
| Word Chain - France | 0 | - | 4.38 | 42,575 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,765 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,765 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,882 |
| Italian Foods | 0 | - | 4.31 | 72,160 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,935 |
| The Mafia Quiz | 0 | - | 4.46 | 23,203 |
| History of The Netherlands | 0 | - | 4.46 | 17,306 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,954 |
| Canary Islands | 0 | - | 4.61 | 17,398 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,117 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,134 |
| British Spellings | 0 | - | 4.07 | 99,201 |
| British Groups of Things | 0 | - | 4.25 | 82,667 |
| British Acronyms | 0 | - | 4.39 | 45,617 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,944 |
