| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,537 |
| Official European Union Languages | 0 | - | 4.97 | 236,384 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,617 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,088 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,662 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,921 |
| Slavic Languages | 0 | - | 4.67 | 53,937 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,492 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,535 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,028 |
| History of Russia Quiz | 0 | - | 4.49 | 31,774 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,294 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,349 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,556 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,227 |
| Celtic Nations | 0 | - | 4.69 | 46,800 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,791 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,602 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,594 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,179 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,085 |
| Slavic Countries | 0 | - | 4.96 | 110,786 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,018 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,300 |
| Top Asian Languages on a Map | 0 | - | 4.94 | 70,608 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,220 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,273 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,130 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,138 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,670 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,114 |
| States of Germany | 0 | - | 4.96 | 149,841 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,930 |
| Regions of Italy | 0 | - | 4.92 | 74,611 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,749 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,173 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,067 |
| Champions League Winners | 0 | - | 4.92 | 995,300 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,104 |
| Geography of Russia | 0 | - | 4.57 | 21,419 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,489 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,689 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,393 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,280 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,014 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,951 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,800 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,004 |
| Departments of France | 0 | - | 4.93 | 52,696 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,346 |
| England or Wales? | 0 | - | 4.94 | 45,285 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,323 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,427 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Word Scramble - European Countries | 0 | - | 4.74 | 140,924 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,846 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,753 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,338 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,628 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,588 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,520 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,495 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,331 |
| Name that Greek Letter | 0 | - | 4.94 | 321,468 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,419 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,229 |
| Languages of Spain | 0 | - | 4.36 | 23,137 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,373 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,380 |
| Famous Russians | 0 | - | 4.16 | 23,712 |
| Word Chain - Russia | 0 | - | 4.33 | 15,683 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,550 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,848 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,388 |
| History of Italy | 0 | - | 4.55 | 31,801 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,105 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,989 |
| Roman Emperors | 0 | - | 4.95 | 118,336 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,467 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,964 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,970 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,413 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,326 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 110,837 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,773 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,644 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,165 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,795 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,626 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,587 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,992 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,250 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,253 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,964 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,585 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,913 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,957 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,557 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,097 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,581 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,776 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,515 |
| Capitals of French Regions | 0 | - | 4.45 | 15,980 |
| Regions of France | 0 | - | 4.78 | 119,075 |
| France Immigration by Country | 0 | - | 4.72 | 75,925 |
| Famous Germans | 0 | - | 4.50 | 54,568 |
| German Groups of Things | 0 | - | 4.46 | 38,292 |
| Capitals of German States | 0 | - | 4.74 | 28,799 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,082 |
| Germany True or False? | 0 | - | 4.61 | 48,509 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,405 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,095 |
| Ancient Greek Words | 0 | - | 4.92 | 110,574 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,262 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,740 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,028 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,877 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,867 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,217 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,888 |
| Top World Languages | 0 | - | 4.92 | 812,207 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,038 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,038 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,625 |
| Australian Capitals | 0 | - | 4.92 | 62,586 |
| European Physical Geography | 0 | - | 4.26 | 33,366 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,823 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,755 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,271 |
| Hungary Country Quiz | 0 | - | 4.49 | 42,987 |
| Romania Country Quiz | 0 | - | 4.63 | 53,308 |
| History of Austria | 0 | - | 4.70 | 17,738 |
| Geography of the French Empire | 0 | - | 4.48 | 26,916 |
| The French Revolution | 0 | - | 4.46 | 23,753 |
| France Multiple Choice | 0 | - | 4.38 | 40,621 |
| History of France | 0 | - | 4.59 | 55,914 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,372 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,189 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,557 |
| The Vikings! | 0 | - | 4.45 | 28,236 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,661 |
| The Portuguese Empire | 0 | - | 4.54 | 11,982 |
| American to British Word Translation | 0 | - | 4.06 | 117,016 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,172 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,382 |
| Champions League Top 4 | 0 | - | 4.77 | 133,572 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,423 |
| Asia Map Quiz | 0 | - | 4.99 | 906,103 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,515 |
| Countries by Official Language | 0 | - | 4.95 | 192,624 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,301 |
| Places in their Native Language #2 | 0 | - | 4.85 | 122,907 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,931 |
| Countries in their Native Language | 0 | - | 4.99 | 196,503 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,677 |
| Countries of Africa | 0 | - | 5.00 | 2,505,173 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,745 |
| African East Coast | 0 | - | 4.96 | 94,950 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,827 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,727 |
| Australia Map Quiz | 0 | - | 4.94 | 342,270 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,085 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,897 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,162 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,782 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,111 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,157 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,402 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,844 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,221 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,437 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,112 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,888 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,270 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,376 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,479 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,379 |
| European Geography A-Z | 0 | - | 4.28 | 48,965 |
| Country Codes of Europe | 0 | - | 3.46 | 13,645 |
| The Only European Country ... | 0 | - | 4.91 | 213,558 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,359 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,228 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,740 |
| Austria... or Australia? | 0 | - | 4.68 | 103,822 |
| Presidents of France | 0 | - | 4.25 | 23,870 |
| Word Chain - France | 0 | - | 4.38 | 42,570 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,743 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,756 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,724 |
| Italian Foods | 0 | - | 4.30 | 72,129 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,916 |
| The Mafia Quiz | 0 | - | 4.46 | 23,194 |
| History of The Netherlands | 0 | - | 4.46 | 17,299 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,952 |
| Canary Islands | 0 | - | 4.61 | 17,390 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,027 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,099 |
| British Spellings | 0 | - | 4.07 | 99,192 |
| British Groups of Things | 0 | - | 4.25 | 82,659 |
