| Federal Subjects of Russia | 0 | - | 4.95 | 148,126 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,123 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,759 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,436 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,364 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,034 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,466 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,735 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,354 |
| Official European Union Languages | 0 | - | 4.97 | 238,976 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,175 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,227 |
| Geography of Russia | 0 | - | 4.57 | 21,556 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,919 |
| Word Chain - Russia | 0 | - | 4.33 | 15,772 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,000 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,922 |
| Celtic Nations | 0 | - | 4.69 | 47,003 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,365 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,027 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,321 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,307 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,586 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,536 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,386 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,616 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,450 |
| Slavic Countries | 0 | - | 4.96 | 111,931 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,083 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,143 |
| German Groups of Things | 0 | - | 4.46 | 38,530 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,490 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,218 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,385 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,304 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,983 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,424 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,105 |
| Famous Russians | 0 | - | 4.16 | 23,873 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,135 |
| States of Germany | 0 | - | 4.95 | 153,319 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,310 |
| Regions of Italy | 0 | - | 4.92 | 76,307 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,463 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,476 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,436 |
| Champions League Winners | 0 | - | 4.92 | 1,010,270 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,406 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,594 |
| Countries That Border Russia | 0 | - | 4.98 | 462,932 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,760 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 323,318 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,911 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,757 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,318 |
| Russia Country Quiz | 0 | - | 4.83 | 114,737 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,505 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,425 |
| Departments of France | 0 | - | 4.93 | 54,521 |
| Word Chain - France | 0 | - | 4.38 | 42,852 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,621 |
| British Groups of Things | 0 | - | 4.25 | 82,917 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,059 |
| England or Wales? | 0 | - | 4.94 | 45,813 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,087 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,382 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,127 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,636 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,657 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,704 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,667 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,660 |
| Slavic Languages | 0 | - | 4.68 | 54,484 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,453 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,933 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,894 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,876 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,133 |
| Name that Greek Letter | 0 | - | 4.93 | 324,229 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,670 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,517 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,051 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 109,050 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 275,976 |
| Word Chain - Africa | 0 | - | 4.47 | 31,657 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,380 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,325 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,783 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,557 |
| Word Chain - Germany | 0 | - | 4.31 | 22,631 |
| The Trojan War | 0 | - | 4.83 | 39,809 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,297 |
| History of Italy | 0 | - | 4.55 | 32,062 |
| Word Chain - Italy | 0 | - | 4.07 | 23,191 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,987 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,666 |
| Roman Emperors | 0 | - | 4.95 | 120,443 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,725 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,436 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,307 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,364 |
| Name a Valid English City | 0 | - | 4.19 | 16,757 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,758 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,650 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,275 |
| Name a Valid Answer - United States #1 | 0 | - | 4.63 | 94,153 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,023 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,418 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,820 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,372 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,040 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,372 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,233 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,042 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,307 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,873 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,615 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,912 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Regions of France | 0 | - | 4.70 | 121,307 |
| France Immigration by Country | 0 | - | 4.70 | 76,699 |
| Famous Germans | 0 | - | 4.50 | 55,544 |
| Capitals of German States | 0 | - | 4.74 | 28,991 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,408 |
| Germany True or False? | 0 | - | 4.61 | 48,902 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,156 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,039 |
| Ancient Greek Words | 0 | - | 4.93 | 111,945 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,851 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,514 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,349 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,468 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,164 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,143 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,562 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,617 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,296 |
| Famous People from Africa | 0 | - | 4.45 | 10,970 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,012 |
| Four Letter African Geography | 0 | - | 4.67 | 19,501 |
| Astronomy Decoder | 0 | - | 4.48 | 38,120 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,520 |
| Australian Capitals | 0 | - | 4.92 | 62,760 |
| Word Chain - Australia | 0 | - | 4.38 | 38,174 |
| European Physical Geography | 0 | - | 4.26 | 33,542 |
| Word Scramble - European Cities | 0 | - | 3.84 | 18,936 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,307 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,026 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,812 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,565 |
| Romania Country Quiz | 0 | - | 4.63 | 53,927 |
| History of Austria | 0 | - | 4.70 | 17,913 |
| Geography of the French Empire | 0 | - | 4.45 | 27,158 |
| The French Revolution | 0 | - | 4.47 | 24,071 |
| France Multiple Choice | 0 | - | 4.39 | 40,774 |
| History of France | 0 | - | 4.61 | 57,303 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,180 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,291 |
| The Vikings! | 0 | - | 4.46 | 28,372 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,222 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| American to British Word Translation | 0 | - | 4.14 | 139,346 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,959 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,176 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,731 |
| Champions League Top 4 | 0 | - | 4.77 | 137,391 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,863 |
| Asia Map Quiz | 0 | - | 4.99 | 920,049 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,334 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,634,875 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,080 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,991 |
| Australia Map Quiz | 0 | - | 4.95 | 345,272 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,803 |
| South American Geography Quiz #2 | 0 | - | 4.37 | 40,902 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,649 |
| Word Chain - South America | 0 | - | 4.51 | 23,940 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,056 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,168 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,877 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,748 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,658 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,144 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,293 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,637 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,490 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,176 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,919 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,553 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,033 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,167 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,462 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,761 |
| European Geography A-Z | 0 | - | 4.29 | 49,370 |
| Country Codes of Europe | 0 | - | 3.43 | 13,757 |
| The Only European Country ... | 0 | - | 4.91 | 217,517 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,651 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,686 |
