| Federal Subjects of Russia | 0 | - | 4.94 | 143,945 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,880 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,296 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,410 |
| Countries That Border Russia | 0 | - | 4.98 | 458,874 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,490 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,175 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,143 |
| Russia Country Quiz | 0 | - | 4.85 | 113,620 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,573 |
| Official European Union Languages | 0 | - | 4.97 | 236,499 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,691 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,158 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,369 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,511 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,534 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,563 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,645 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,839 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,794 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,843 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,045 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,834 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,096 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,238 |
| Celtic Nations | 0 | - | 4.69 | 46,810 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,986 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,610 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,941 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,979 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,793 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,562 |
| German Groups of Things | 0 | - | 4.46 | 38,305 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,939 |
| Champions League Winners | 0 | - | 4.92 | 996,190 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,996 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,327 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,322 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,205 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,227 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,768 |
| States of Germany | 0 | - | 4.96 | 150,014 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,001 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,517 |
| Regions of Italy | 0 | - | 4.92 | 74,690 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,799 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,311 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,137 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,403 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,349 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,086 |
| Name a Valid African Country | 0 | - | 4.98 | 152,924 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,136 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,392 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,136 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,722 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,226 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,845 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,032 |
| Departments of France | 0 | - | 4.93 | 52,793 |
| Word Chain - France | 0 | - | 4.38 | 42,579 |
| Italian Foods | 0 | - | 4.31 | 72,174 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,361 |
| British Groups of Things | 0 | - | 4.25 | 82,668 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,944 |
| England or Wales? | 0 | - | 4.94 | 45,309 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,475 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,701 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,550 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,040 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,547 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,843 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,445 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,598 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,979 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,017 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,785 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,958 |
| Slavic Languages | 0 | - | 4.67 | 53,971 |
| Countries that Border Poland | 0 | - | 4.99 | 171,333 |
| Russian History A-Z | 0 | - | 4.38 | 30,783 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,469 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,417 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,689 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,612 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,538 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,733 |
| The Trojan War | 0 | - | 4.83 | 39,425 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,798 |
| Name that Greek Letter | 0 | - | 4.94 | 321,632 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,518 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,428 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,039 |
| Roman Emperors | 0 | - | 4.95 | 118,452 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,243 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,472 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,442 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,912 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,176 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,116 |
| Famous Russians | 0 | - | 4.16 | 23,727 |
| History of Russia Quiz | 0 | - | 4.49 | 31,788 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,563 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,894 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,093 |
| Word Chain - Germany | 0 | - | 4.31 | 22,474 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,001 |
| History of Italy | 0 | - | 4.55 | 31,813 |
| Word Chain - Italy | 0 | - | 4.07 | 23,087 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,155 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,479 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,286 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,979 |
| Geography of Spain | 0 | - | 4.59 | 21,960 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,238 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,797 |
| Name a Valid English City | 0 | - | 4.19 | 16,628 |
| Dog in the Answers | 0 | - | 4.16 | 68,355 |
| Countries With One Word and Two U's | 0 | - | 4.47 | 50,409 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,802 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,503 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,859 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,385 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,888 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,825 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,694 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,208 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,870 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,660 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,619 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,013 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,294 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,771 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,585 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,142 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,605 |
| Capitals of French Regions | 0 | - | 4.45 | 15,984 |
| Regions of France | 0 | - | 4.78 | 119,218 |
| France Immigration by Country | 0 | - | 4.72 | 75,957 |
| Famous Germans | 0 | - | 4.50 | 54,606 |
| Capitals of German States | 0 | - | 4.74 | 28,811 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,090 |
| Germany True or False? | 0 | - | 4.61 | 48,530 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,462 |
| Ancient Greek Words | 0 | - | 4.92 | 110,683 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,420 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,614 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,771 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,044 |
| British to American Food Translation | 0 | - | 3.38 | 51,813 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,391 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,047 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,313 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,325 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,319 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,146 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,086 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,096 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,200 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| Word Chain - Australia | 0 | - | 4.37 | 38,014 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,260 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| Albania Country Quiz | 0 | - | 4.54 | 38,642 |
| Geography of Russia | 0 | - | 4.57 | 21,426 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,850 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,772 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,306 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,022 |
| Romania Country Quiz | 0 | - | 4.63 | 53,339 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,760 |
| History of Austria | 0 | - | 4.70 | 17,746 |
| Geography of the French Empire | 0 | - | 4.48 | 26,926 |
| The French Revolution | 0 | - | 4.46 | 23,782 |
| France Multiple Choice | 0 | - | 4.38 | 40,633 |
| History of France | 0 | - | 4.59 | 56,019 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,382 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,916 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,478 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,689 |
| The Portuguese Empire | 0 | - | 4.54 | 11,989 |
| American to British Word Translation | 0 | - | 4.06 | 117,050 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,701 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,211 |
| Champions League Top 4 | 0 | - | 4.77 | 133,767 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,998 |
| Asia Map Quiz | 0 | - | 4.99 | 906,882 |
| Countries that Beat India | 0 | - | 4.41 | 62,584 |
| Countries of Africa | 0 | - | 5.00 | 2,507,353 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,801 |
| African East Coast | 0 | - | 4.96 | 95,031 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,912 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,059 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,977 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,782 |
| Australia Map Quiz | 0 | - | 4.94 | 342,448 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,611 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,190 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,469 |
