| European Countries by First 2 Letters | 0 | - | 4.95 | 528,246 |
| Federal Subjects of Russia | 0 | - | 4.95 | 145,833 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,922 |
| Official European Union Languages | 0 | - | 4.97 | 237,906 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,464 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,981 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,234 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,808 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,702 |
| History of Russia Quiz | 0 | - | 4.49 | 31,864 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,342 |
| Celtic Nations | 0 | - | 4.69 | 46,887 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,170 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,680 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 169,958 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,861 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,604 |
| Slavic Countries | 0 | - | 4.96 | 111,370 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,245 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,821 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,362 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 96,710 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,725 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,851 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,527 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,625 |
| States of Germany | 0 | - | 4.96 | 151,497 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,741 |
| Regions of Italy | 0 | - | 4.92 | 75,382 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,350 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,414 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,867 |
| Champions League Winners | 0 | - | 4.92 | 1,002,305 |
| European Physical Geography | 0 | - | 4.26 | 33,443 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,347 |
| Geography of Russia | 0 | - | 4.57 | 21,496 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,642 |
| African Great Lakes | 0 | - | 4.82 | 65,854 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,244 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,205 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,000 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,389 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,162 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,245 |
| Departments of France | 0 | - | 4.93 | 53,546 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,481 |
| England or Wales? | 0 | - | 4.94 | 45,544 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,492 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,513 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,281 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,533 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,637 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,401 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,097 |
| Seas of Europe | 0 | - | 4.37 | 84,537 |
| Slavic Languages | 0 | - | 4.68 | 54,212 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,648 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,591 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,016 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,762 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,707 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,681 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,380 |
| Name that Greek Letter | 0 | - | 4.93 | 322,845 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,551 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,396 |
| African Physical Geography | 0 | - | 4.51 | 31,641 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,640 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,639 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,043 |
| Rivers of the United States | 0 | - | 4.93 | 65,974 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,730 |
| Famous Russians | 0 | - | 4.16 | 23,790 |
| Word Chain - Russia | 0 | - | 4.33 | 15,731 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,672 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,207 |
| The Trojan War | 0 | - | 4.83 | 39,611 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,368 |
| History of Italy | 0 | - | 4.55 | 31,918 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,552 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,358 |
| Roman Emperors | 0 | - | 4.95 | 119,501 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,596 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,138 |
| Asian Physical Geography | 0 | - | 4.61 | 35,466 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,432 |
| Flowers by Picture | 0 | - | 4.46 | 105,532 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,326 |
| European Geography By Letter - A | 0 | - | 4.61 | 134,540 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,309 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,233 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,101 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,555 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,464 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,104 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,873 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,488 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,700 |
| Europe Map Quiz | 0 | - | 5.00 | 4,750,453 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,173 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,828 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,114 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,149 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,880 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,933 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,823 |
| Capitals of French Regions | 0 | - | 4.45 | 16,029 |
| Regions of France | 0 | - | 4.75 | 120,184 |
| France Immigration by Country | 0 | - | 4.70 | 76,310 |
| Famous Germans | 0 | - | 4.50 | 54,933 |
| German Groups of Things | 0 | - | 4.46 | 38,404 |
| Capitals of German States | 0 | - | 4.74 | 28,911 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,243 |
| Germany True or False? | 0 | - | 4.61 | 48,690 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,799 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,042 |
| Ancient Greek Words | 0 | - | 4.93 | 111,220 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,022 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,147 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,183 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,959 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,340 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,309 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,008 |
| Africa Map Quiz | 0 | - | 5.00 | 2,112,705 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,465 |
| Australian Capitals | 0 | - | 4.92 | 62,681 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,078 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,883 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,558 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,277 |
| Romania Country Quiz | 0 | - | 4.63 | 53,644 |
| History of Austria | 0 | - | 4.70 | 17,820 |
| Geography of the French Empire | 0 | - | 4.45 | 27,013 |
| The French Revolution | 0 | - | 4.46 | 23,883 |
| France Multiple Choice | 0 | - | 4.38 | 40,690 |
| History of France | 0 | - | 4.59 | 56,721 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,448 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,651 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,923 |
| The Vikings! | 0 | - | 4.46 | 28,306 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,968 |
| The Portuguese Empire | 0 | - | 4.58 | 12,041 |
| American to British Word Translation | 0 | - | 4.14 | 138,568 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,839 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,496 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,539 |
| Champions League Top 4 | 0 | - | 4.77 | 135,367 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,445,213 |
| Asia Map Quiz | 0 | - | 4.99 | 912,535 |
| Megadiverse Countries | 0 | - | 4.96 | 134,676 |
| Countries of Africa | 0 | - | 5.00 | 2,525,761 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,435 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,732 |
| African East Coast | 0 | - | 4.96 | 95,660 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,499 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,344 |
| Australia Map Quiz | 0 | - | 4.95 | 343,548 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,237 |
| United States Map Quiz | 0 | - | 4.98 | 4,150,557 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,430 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,523 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,230 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,634 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,528 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,938 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,188 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,802 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,746 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,428 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,135 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,467 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,572 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,696 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,574 |
| European Geography A-Z | 0 | - | 4.29 | 49,155 |
| Country Codes of Europe | 0 | - | 3.43 | 13,691 |
| The Only European Country ... | 0 | - | 4.91 | 215,596 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,539 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,279 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,928 |
| Austria... or Australia? | 0 | - | 4.68 | 104,175 |
| Presidents of France | 0 | - | 4.25 | 24,006 |
| Word Chain - France | 0 | - | 4.38 | 42,709 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,894 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,862 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,147 |
| Italian Foods | 0 | - | 4.30 | 72,548 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,194 |
| The Mafia Quiz | 0 | - | 4.46 | 23,264 |
| History of The Netherlands | 0 | - | 4.46 | 17,383 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,002 |
| Canary Islands | 0 | - | 4.62 | 17,452 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,935 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,521 |
| British Spellings | 0 | - | 4.06 | 99,376 |
| British Groups of Things | 0 | - | 4.25 | 82,812 |
| British Acronyms | 0 | - | 4.39 | 45,729 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,007 |
| British Monopoly Board | 0 | - | 4.52 | 41,125 |
