| Federal Subjects of Russia | 0 | - | 4.94 | 145,066 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,721 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,308 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,472 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,178 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,248 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,102 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,748 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,052 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,096 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,798 |
| Countries That Border Russia | 0 | - | 4.98 | 460,154 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,573 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,607 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,952 |
| Russia Country Quiz | 0 | - | 4.85 | 113,988 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,817 |
| Official European Union Languages | 0 | - | 4.97 | 237,550 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,250 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,327 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,533 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,615 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,238 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,831 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,501 |
| History of Russia Quiz | 0 | - | 4.49 | 31,833 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,651 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,064 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,093 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,251 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,171 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,721 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,207 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,878 |
| Celtic Nations | 0 | - | 4.69 | 46,866 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,829 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,188 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,883 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,717 |
| German Groups of Things | 0 | - | 4.46 | 38,371 |
| Champions League Winners | 0 | - | 4.92 | 1,000,112 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,391 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,416 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,188 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 320,563 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,685 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,594 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,534 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,635 |
| Famous Russians | 0 | - | 4.16 | 23,765 |
| Geography of Russia | 0 | - | 4.57 | 21,466 |
| Word Chain - Russia | 0 | - | 4.33 | 15,716 |
| States of Germany | 0 | - | 4.96 | 150,929 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,304 |
| Regions of Italy | 0 | - | 4.92 | 75,104 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,060 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,068 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,670 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,607 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,512 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,008 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,243 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,511 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,674 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,277 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,052 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,164 |
| Departments of France | 0 | - | 4.93 | 53,192 |
| Word Chain - France | 0 | - | 4.38 | 42,664 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,422 |
| British Groups of Things | 0 | - | 4.25 | 82,757 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,989 |
| England or Wales? | 0 | - | 4.94 | 45,470 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,133 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,212 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,972 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,498 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,623 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,751 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,289 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,081 |
| Slavic Languages | 0 | - | 4.68 | 54,135 |
| Countries that Border Poland | 0 | - | 4.99 | 171,729 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,202 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,899 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,712 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,643 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,027 |
| The Trojan War | 0 | - | 4.83 | 39,542 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,196 |
| Name that Greek Letter | 0 | - | 4.93 | 322,397 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,079 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,514 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,245 |
| Roman Emperors | 0 | - | 4.95 | 119,087 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,323 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,957 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 108,446 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 274,087 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,991 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,776 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,517 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,626 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,102 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,143 |
| Word Chain - Germany | 0 | - | 4.31 | 22,518 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,031 |
| History of Italy | 0 | - | 4.55 | 31,888 |
| Word Chain - Italy | 0 | - | 4.07 | 23,130 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,397 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,549 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,325 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,075 |
| Geography of Spain | 0 | - | 4.59 | 22,012 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,287 |
| Name a Valid English City | 0 | - | 4.19 | 16,666 |
| Famous People from Africa | 0 | - | 4.45 | 10,920 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,264 |
| Word Chain - Africa | 0 | - | 4.47 | 31,528 |
| Four Letter African Geography | 0 | - | 4.74 | 17,873 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,000 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,666 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,653 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,107 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,088 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,963 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,425 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,272 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,016 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,793 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,425 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,574 |
| Europe Map Quiz | 0 | - | 5.00 | 4,743,455 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,782 |
| Capitals of French Regions | 0 | - | 4.45 | 16,013 |
| Regions of France | 0 | - | 4.78 | 119,828 |
| France Immigration by Country | 0 | - | 4.72 | 76,150 |
| Famous Germans | 0 | - | 4.50 | 54,805 |
| Capitals of German States | 0 | - | 4.74 | 28,886 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,182 |
| Germany True or False? | 0 | - | 4.61 | 48,642 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,690 |
| Ancient Greek Words | 0 | - | 4.93 | 111,040 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,824 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,807 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,014 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,134 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,793 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,446 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,901 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,065 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,055 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,754 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,026 |
| Australian Capitals | 0 | - | 4.92 | 62,646 |
| Word Chain - Australia | 0 | - | 4.37 | 38,068 |
| European Physical Geography | 0 | - | 4.26 | 33,414 |
| Word Scramble - European Cities | 0 | - | 3.83 | 18,850 |
| Albania Country Quiz | 0 | - | 4.54 | 38,812 |
| Russian History A-Z | 0 | - | 4.38 | 31,353 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,000 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,840 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,470 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,188 |
| Romania Country Quiz | 0 | - | 4.63 | 53,539 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,882 |
| History of Austria | 0 | - | 4.70 | 17,793 |
| Geography of the French Empire | 0 | - | 4.45 | 26,986 |
| The French Revolution | 0 | - | 4.46 | 23,852 |
| France Multiple Choice | 0 | - | 4.38 | 40,675 |
| History of France | 0 | - | 4.59 | 56,533 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,421 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,711 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,910 |
| The Vikings! | 0 | - | 4.46 | 28,280 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,802 |
| The Portuguese Empire | 0 | - | 4.58 | 12,025 |
| American to British Word Translation | 0 | - | 4.13 | 138,102 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,796 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,397 |
| Champions League Top 4 | 0 | - | 4.77 | 134,793 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,577 |
| Asia Map Quiz | 0 | - | 4.99 | 910,282 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,601,573 |
| Random Cities by Clue | 0 | - | 4.53 | 42,639 |
| Countries of Africa | 0 | - | 5.00 | 2,518,777 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,194 |
| African East Coast | 0 | - | 4.96 | 95,445 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,303 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,231 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,136 |
| Australia Map Quiz | 0 | - | 4.94 | 343,137 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,664 |
| Word Chain - South America | 0 | - | 4.51 | 23,821 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,379 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 744,879 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,896 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,697 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,935 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,429 |
