| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,875 |
| Official European Union Languages | 0 | - | 4.97 | 240,400 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,848 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,973 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,128 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,507 |
| Countries That Border Russia | 0 | - | 4.98 | 464,976 |
| Russia Country Quiz | 0 | - | 4.83 | 115,470 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,446 |
| Slavic Languages | 0 | - | 4.67 | 54,790 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,362 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,393 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,115 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,030 |
| History of Russia Quiz | 0 | - | 4.47 | 32,030 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,040 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,679 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,155 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,228 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,596 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,228 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,412 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,758 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,517 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,788 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,247 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,824 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,519 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,538 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,123 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,920 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,110 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,200 |
| Famous Russians | 0 | - | 4.16 | 23,929 |
| States of Germany | 0 | - | 4.95 | 154,977 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,827 |
| Regions of Italy | 0 | - | 4.92 | 77,280 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,931 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,613 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,912 |
| Champions League Winners | 0 | - | 4.92 | 1,018,227 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,832 |
| Geography of Russia | 0 | - | 4.57 | 21,623 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,094 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,874 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,397 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,368 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,317 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,843 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,653 |
| Departments of France | 0 | - | 4.93 | 55,424 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,785 |
| England or Wales? | 0 | - | 4.94 | 46,063 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,519 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,801 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,469 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,232 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,071 |
| Countries that Border Poland | 0 | - | 4.99 | 173,363 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,118 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,097 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,069 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,232 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,294 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,104 |
| Name that Greek Letter | 0 | - | 4.93 | 325,343 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,764 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,667 |
| Languages of Spain | 0 | - | 4.36 | 23,473 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 223,195 |
| Word Chain - Russia | 0 | - | 4.33 | 15,807 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,905 |
| Russian History A-Z | 0 | - | 4.35 | 32,311 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,768 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,917 |
| The Trojan War | 0 | - | 4.83 | 40,091 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,273 |
| History of Italy | 0 | - | 4.55 | 32,187 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,537 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,706 |
| Roman Emperors | 0 | - | 4.95 | 121,465 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,856 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,470 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,064 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 32,707 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,695 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,371 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,788 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,298 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,821 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,299 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,830 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,303 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,904 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,179 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,801 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,034 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,582 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,251 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,519 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,475 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,576 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,626 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,795 |
| Capitals of French Regions | 0 | - | 4.45 | 16,210 |
| Regions of France | 0 | - | 4.70 | 122,433 |
| France Immigration by Country | 0 | - | 4.70 | 77,018 |
| Famous Germans | 0 | - | 4.50 | 55,882 |
| German Groups of Things | 0 | - | 4.47 | 38,677 |
| Capitals of German States | 0 | - | 4.74 | 29,099 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,598 |
| Germany True or False? | 0 | - | 4.61 | 49,075 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,598 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,557 |
| Ancient Greek Words | 0 | - | 4.93 | 112,695 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,556 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,948 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,483 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,971 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,795 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,019 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,107 |
| Top World Languages | 0 | - | 4.92 | 831,586 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,512 |
| Australian Capitals | 0 | - | 4.92 | 62,864 |
| European Physical Geography | 0 | - | 4.26 | 33,619 |
| Albania Country Quiz | 0 | - | 4.54 | 39,309 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,517 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,170 |
| Ukraine Country Quiz | 0 | - | 4.43 | 48,050 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,844 |
| Romania Country Quiz | 0 | - | 4.63 | 54,218 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,261 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Geography of the French Empire | 0 | - | 4.45 | 27,236 |
| The French Revolution | 0 | - | 4.47 | 24,169 |
| France Multiple Choice | 0 | - | 4.39 | 40,877 |
| History of France | 0 | - | 4.61 | 57,740 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,580 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,515 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,630 |
| The Vikings! | 0 | - | 4.46 | 28,425 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,445 |
| The Portuguese Empire | 0 | - | 4.58 | 12,119 |
| American to British Word Translation | 0 | - | 4.14 | 139,849 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,475 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,857 |
| Champions League Top 4 | 0 | - | 4.78 | 139,628 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,556 |
| Asia Map Quiz | 0 | - | 4.99 | 926,945 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,456 |
| Officially Recognized Languages of India | 0 | - | 4.40 | 31,646 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,012 |
| Official Languages of South Africa | 0 | - | 4.57 | 26,264 |
| Countries by Official Language | 0 | - | 4.95 | 196,277 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,667 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,012 |
| Countries in their Native Language | 0 | - | 4.99 | 199,997 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,174 |
| English Words of Russian Origin | 0 | - | 4.14 | 51,102 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,621 |
| Australia Map Quiz | 0 | - | 4.95 | 346,542 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,848 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,399 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,999 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,293 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,631 |
| European Geography By Letter - E | 0 | - | 4.23 | 116,551 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,686 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,367 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,155 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,716 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,366 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,737 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,701 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,951 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 52,001 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,539 |
| European Geography A-Z | 0 | - | 4.29 | 49,527 |
| Country Codes of Europe | 0 | - | 3.45 | 13,851 |
| The Only European Country ... | 0 | - | 4.91 | 219,653 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,867 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,373 |
| Lithuania Country Quiz | 0 | - | 4.63 | 31,838 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,249 |
| Austria... or Australia? | 0 | - | 4.67 | 104,856 |
| Famous French People | 0 | - | 4.05 | 36,170 |
| Presidents of France | 0 | - | 4.25 | 24,373 |
| Word Chain - France | 0 | - | 4.38 | 42,965 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,286 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,077 |
| Figures from Greek Mythology | 0 | - | 4.92 | 193,105 |
| Italian Foods | 0 | - | 4.30 | 73,406 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,330 |
| The Mafia Quiz | 0 | - | 4.46 | 23,454 |
| History of The Netherlands | 0 | - | 4.46 | 17,573 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,138 |
| Canary Islands | 0 | - | 4.62 | 17,550 |
