| Federal Subjects of Russia | 0 | - | 4.95 | 147,973 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,104 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,429 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,526 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,390 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,280 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,350 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,008 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,299 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,290 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,522 |
| Countries That Border Russia | 0 | - | 4.98 | 462,786 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,877 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,340 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,599 |
| Russia Country Quiz | 0 | - | 4.83 | 114,684 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,312 |
| Official European Union Languages | 0 | - | 4.97 | 238,899 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,119 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,001 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,973 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,850 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,865 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,355 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,192 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,746 |
| History of Russia Quiz | 0 | - | 4.47 | 31,949 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,911 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,531 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,202 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,921 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,467 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,188 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,088 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,000 |
| Celtic Nations | 0 | - | 4.69 | 46,994 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,541 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,073 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,125 |
| German Groups of Things | 0 | - | 4.46 | 38,521 |
| Champions League Winners | 0 | - | 4.92 | 1,009,717 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,548 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,599 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,282 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 322,936 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,265 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,375 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 85,908 |
| Famous Russians | 0 | - | 4.16 | 23,862 |
| Geography of Russia | 0 | - | 4.57 | 21,555 |
| Word Chain - Russia | 0 | - | 4.33 | 15,770 |
| States of Germany | 0 | - | 4.95 | 153,148 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,275 |
| Regions of Italy | 0 | - | 4.92 | 76,218 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,411 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,363 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,387 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,747 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,584 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,075 |
| 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 | 174,816 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,574 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,295 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,463 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,412 |
| Departments of France | 0 | - | 4.93 | 54,447 |
| Word Chain - France | 0 | - | 4.38 | 42,837 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,612 |
| British Groups of Things | 0 | - | 4.25 | 82,906 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,054 |
| England or Wales? | 0 | - | 4.94 | 45,793 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,971 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,330 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,071 |
| Word Chain - Africa | 0 | - | 4.47 | 31,649 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,642 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,674 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,570 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,650 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,627 |
| Slavic Languages | 0 | - | 4.67 | 54,462 |
| Countries that Border Poland | 0 | - | 4.99 | 172,592 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,053 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,411 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,922 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,878 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,654 |
| The Trojan War | 0 | - | 4.83 | 39,796 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,799 |
| Name that Greek Letter | 0 | - | 4.93 | 324,150 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,224 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,661 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,643 |
| Roman Emperors | 0 | - | 4.95 | 120,375 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,515 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,041 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 109,018 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 275,850 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,219 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,809 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,330 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,772 |
| Russian History A-Z | 0 | - | 4.35 | 31,854 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,532 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,259 |
| Word Chain - Germany | 0 | - | 4.31 | 22,613 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,820 |
| History of Italy | 0 | - | 4.55 | 32,052 |
| Word Chain - Italy | 0 | - | 4.07 | 23,179 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,945 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,718 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,434 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,295 |
| Geography of Spain | 0 | - | 4.59 | 22,103 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,357 |
| 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 | 268,576 |
| Four Letter African Geography | 0 | - | 4.67 | 19,460 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,257 |
| Name a Valid Answer - United States #1 | 0 | - | 4.63 | 94,127 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,887 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,290 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,683 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,239 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,935 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,246 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,882 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,157 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,971 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,247 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,792 |
| Europe Map Quiz | 0 | - | 5.00 | 4,770,524 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,848 |
| Capitals of French Regions | 0 | - | 4.45 | 16,107 |
| Regions of France | 0 | - | 4.72 | 121,213 |
| France Immigration by Country | 0 | - | 4.70 | 76,676 |
| Famous Germans | 0 | - | 4.50 | 55,522 |
| Capitals of German States | 0 | - | 4.74 | 28,989 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,397 |
| Germany True or False? | 0 | - | 4.61 | 48,889 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,136 |
| Ancient Greek Words | 0 | - | 4.93 | 111,894 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,763 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,274 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,486 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,337 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,436 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,716 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,966 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,066 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,670 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,531 |
| Oceania Map Quiz | 0 | - | 4.98 | 648,591 |
| 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 | 18,932 |
| Albania Country Quiz | 0 | - | 4.54 | 39,073 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,282 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,012 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,795 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,541 |
| Romania Country Quiz | 0 | - | 4.63 | 53,895 |
| 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 | 24,058 |
| France Multiple Choice | 0 | - | 4.39 | 40,772 |
| History of France | 0 | - | 4.59 | 57,266 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,684 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,927 |
| 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 | 139,295 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,943 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,151 |
| Champions League Top 4 | 0 | - | 4.77 | 137,251 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,652 |
| Asia Map Quiz | 0 | - | 4.99 | 919,438 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,632,347 |
| Random Cities by Clue | 0 | - | 4.53 | 42,766 |
| Countries of Africa | 0 | - | 5.00 | 2,544,484 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,090 |
| African East Coast | 0 | - | 4.96 | 96,274 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,132 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,444 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,891 |
| Australia Map Quiz | 0 | - | 4.95 | 345,094 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,791 |
| Word Chain - South America | 0 | - | 4.51 | 23,930 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,374 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,997 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,241 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,186 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,777 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,737 |
