| Federal Subjects of Russia | 0 | - | 4.95 | 147,949 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,097 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,426 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,491 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,388 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,268 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,347 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,005 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,294 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,289 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,490 |
| Countries That Border Russia | 0 | - | 4.98 | 462,761 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,858 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,332 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,585 |
| Russia Country Quiz | 0 | - | 4.83 | 114,681 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,309 |
| Official European Union Languages | 0 | - | 4.97 | 238,890 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,112 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,966 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,969 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,850 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,858 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,352 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,183 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,744 |
| History of Russia Quiz | 0 | - | 4.47 | 31,947 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,906 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,525 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,190 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,872 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,459 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,187 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,038 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,999 |
| Celtic Nations | 0 | - | 4.69 | 46,991 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,539 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,072 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,120 |
| German Groups of Things | 0 | - | 4.46 | 38,520 |
| Champions League Winners | 0 | - | 4.92 | 1,009,636 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,547 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,599 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,281 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 322,844 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,262 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,369 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 85,625 |
| Famous Russians | 0 | - | 4.16 | 23,862 |
| Geography of Russia | 0 | - | 4.57 | 21,553 |
| Word Chain - Russia | 0 | - | 4.33 | 15,770 |
| States of Germany | 0 | - | 4.95 | 153,137 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,271 |
| Regions of Italy | 0 | - | 4.92 | 76,217 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,404 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,355 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,387 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,743 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,576 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,074 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,387 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,601 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,811 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,569 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,293 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,459 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,411 |
| Departments of France | 0 | - | 4.93 | 54,429 |
| Word Chain - France | 0 | - | 4.38 | 42,835 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,610 |
| British Groups of Things | 0 | - | 4.25 | 82,905 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,053 |
| England or Wales? | 0 | - | 4.94 | 45,793 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,960 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,320 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,064 |
| Word Chain - Africa | 0 | - | 4.47 | 31,644 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,639 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,674 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,559 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,643 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,619 |
| Slavic Languages | 0 | - | 4.67 | 54,461 |
| Countries that Border Poland | 0 | - | 4.99 | 172,584 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,045 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,407 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,921 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,878 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,648 |
| The Trojan War | 0 | - | 4.83 | 39,794 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,745 |
| Name that Greek Letter | 0 | - | 4.93 | 324,135 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,216 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,659 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,641 |
| Roman Emperors | 0 | - | 4.95 | 120,368 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,514 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,040 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 109,016 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 275,825 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,216 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,782 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,324 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,771 |
| Russian History A-Z | 0 | - | 4.35 | 31,848 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,529 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,259 |
| Word Chain - Germany | 0 | - | 4.31 | 22,613 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,785 |
| History of Italy | 0 | - | 4.55 | 32,049 |
| Word Chain - Italy | 0 | - | 4.07 | 23,179 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,939 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,717 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,434 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,294 |
| Geography of Spain | 0 | - | 4.59 | 22,102 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,356 |
| Name a Valid English City | 0 | - | 4.19 | 16,745 |
| Famous People from Africa | 0 | - | 4.45 | 10,964 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,564 |
| Four Letter African Geography | 0 | - | 4.67 | 19,457 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,252 |
| Name a Valid Answer - United States #1 | 0 | - | 4.63 | 94,125 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,860 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,260 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,640 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,202 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,917 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,223 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,861 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,142 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,950 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,235 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,772 |
| Europe Map Quiz | 0 | - | 5.00 | 4,770,251 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,836 |
| Capitals of French Regions | 0 | - | 4.45 | 16,106 |
| Regions of France | 0 | - | 4.72 | 121,195 |
| France Immigration by Country | 0 | - | 4.70 | 76,672 |
| Famous Germans | 0 | - | 4.50 | 55,515 |
| Capitals of German States | 0 | - | 4.74 | 28,989 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,396 |
| Germany True or False? | 0 | - | 4.61 | 48,883 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,134 |
| Ancient Greek Words | 0 | - | 4.93 | 111,892 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,756 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,268 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,481 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,336 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,429 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,715 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,947 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,058 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,661 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,426 |
| Oceania Map Quiz | 0 | - | 4.98 | 646,681 |
| Australian Capitals | 0 | - | 4.92 | 62,751 |
| Word Chain - Australia | 0 | - | 4.38 | 38,170 |
| European Physical Geography | 0 | - | 4.26 | 33,539 |
| Word Scramble - European Cities | 0 | - | 3.84 | 18,931 |
| Albania Country Quiz | 0 | - | 4.54 | 39,071 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,279 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,009 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,792 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,538 |
| Romania Country Quiz | 0 | - | 4.63 | 53,892 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,089 |
| History of Austria | 0 | - | 4.70 | 17,901 |
| Geography of the French Empire | 0 | - | 4.45 | 27,154 |
| The French Revolution | 0 | - | 4.47 | 24,057 |
| France Multiple Choice | 0 | - | 4.39 | 40,770 |
| History of France | 0 | - | 4.59 | 57,258 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,668 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,898 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,207 |
| The Portuguese Empire | 0 | - | 4.58 | 12,082 |
| American to British Word Translation | 0 | - | 4.14 | 139,291 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,942 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,150 |
| Champions League Top 4 | 0 | - | 4.77 | 137,237 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,609 |
| Asia Map Quiz | 0 | - | 4.99 | 919,295 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,632,135 |
| Random Cities by Clue | 0 | - | 4.53 | 42,765 |
| Countries of Africa | 0 | - | 5.00 | 2,544,231 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,083 |
| African East Coast | 0 | - | 4.96 | 96,268 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,120 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,443 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,873 |
| Australia Map Quiz | 0 | - | 4.95 | 345,058 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,791 |
| Word Chain - South America | 0 | - | 4.51 | 23,929 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,276 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,973 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,238 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,183 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,755 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,734 |
