| European Countries by First 2 Letters | 0 | - | 4.95 | 528,807 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,287 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,877 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,326 |
| States of Germany | 0 | - | 4.96 | 151,946 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,898 |
| Regions of Italy | 0 | - | 4.92 | 75,570 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,906 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,659 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,025 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,661 |
| Regions of France | 0 | - | 4.75 | 120,437 |
| France Immigration by Country | 0 | - | 4.70 | 76,408 |
| Departments of France | 0 | - | 4.93 | 53,808 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,000 |
| Official European Union Languages | 0 | - | 4.97 | 238,145 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,625 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,539 |
| Geography of the French Empire | 0 | - | 4.45 | 27,025 |
| The French Revolution | 0 | - | 4.46 | 23,903 |
| France Multiple Choice | 0 | - | 4.39 | 40,710 |
| History of France | 0 | - | 4.59 | 56,842 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,718 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,884 |
| Famous French People | 0 | - | 4.06 | 34,976 |
| Word Chain - France | 0 | - | 4.38 | 42,744 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,070 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,763 |
| French History Multiple Choice | 0 | - | 4.55 | 33,002 |
| History of Italy | 0 | - | 4.55 | 31,936 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,650 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,615 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,168 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,361 |
| Celtic Nations | 0 | - | 4.69 | 46,909 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,254 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,997 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,688 |
| Capitals of French Regions | 0 | - | 4.45 | 16,041 |
| Famous Germans | 0 | - | 4.50 | 55,179 |
| German Groups of Things | 0 | - | 4.46 | 38,440 |
| Germany True or False? | 0 | - | 4.61 | 48,741 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,880 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,314 |
| Italy True or False? | 0 | - | 4.42 | 47,388 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,239 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,236 |
| Counties of England | 0 | - | 4.97 | 794,878 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,080 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,587 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,365 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,910 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 77,981 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,714 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,423 |
| Movies Set in France | 0 | - | 4.26 | 13,113 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,169 |
| French Inventions | 0 | - | 4.08 | 13,890 |
| History of Paris | 0 | - | 4.24 | 13,637 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,558 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,642 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,044 |
| Champions League Winners | 0 | - | 4.92 | 1,003,925 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,401 |
| History of Austria | 0 | - | 4.70 | 17,835 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,464 |
| The Vikings! | 0 | - | 4.46 | 28,319 |
| The Portuguese Empire | 0 | - | 4.58 | 12,048 |
| American to British Word Translation | 0 | - | 4.14 | 138,761 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,860 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,647 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,315 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,704 |
| Presidents of France | 0 | - | 4.25 | 24,037 |
| Italian Foods | 0 | - | 4.30 | 72,655 |
| The Mafia Quiz | 0 | - | 4.46 | 23,299 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,516 |
| History of The Netherlands | 0 | - | 4.46 | 17,407 |
| Canary Islands | 0 | - | 4.62 | 17,460 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,610 |
| British Spellings | 0 | - | 4.06 | 99,408 |
| British Groups of Things | 0 | - | 4.25 | 82,833 |
| British Acronyms | 0 | - | 4.39 | 45,761 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,020 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,686 |
| Geography of Scotland | 0 | - | 4.63 | 21,594 |
| England or Wales? | 0 | - | 4.94 | 45,608 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,799 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,562 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,644 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,505 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,443 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,349 |
| Slavic Languages | 0 | - | 4.68 | 54,274 |
| France A-Z | 0 | - | 4.16 | 38,173 |
| Geography of Germany | 0 | - | 4.35 | 17,164 |
| History of Germany | 0 | - | 4.39 | 52,780 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,149 |
| Name that Greek Letter | 0 | - | 4.93 | 323,103 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,580 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,422 |
| History of Spain | 0 | - | 4.23 | 21,071 |
| Languages of Spain | 0 | - | 4.36 | 23,284 |
| British to American Word Translation | 0 | - | 3.74 | 255,005 |
| British Foods by Description | 0 | - | 3.94 | 48,313 |
| British and American Word Differences | 0 | - | 2.63 | 46,857 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,581 |
| Bridges of London | 0 | - | 4.17 | 10,093 |
| British Sport Trivia | 0 | - | 4.37 | 20,440 |
| Famous Welsh People | 0 | - | 4.29 | 11,376 |
| Malta Country Quiz | 0 | - | 4.81 | 31,008 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,891 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,862 |
| History of Russia Quiz | 0 | - | 4.49 | 31,881 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,696 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,196 |
| French Foods | 0 | - | 4.00 | 27,671 |
| Word Chain - Germany | 0 | - | 4.31 | 22,564 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,917 |
| The Trojan War | 0 | - | 4.83 | 39,653 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,548 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,552 |
| Word Chain - Italy | 0 | - | 4.07 | 23,149 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,087 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,421 |
| Roman Emperors | 0 | - | 4.95 | 119,660 |
| Famous Nordic People | 0 | - | 4.34 | 20,065 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,611 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,797 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,327 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,517 |
| People on Money - England | 0 | - | 4.29 | 16,602 |
| Name a Valid English City | 0 | - | 4.19 | 16,703 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,696 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,152 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,639 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,375 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,102 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,157 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,170 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,247 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,577 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,319 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,818 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,161 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,814 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,211 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,870 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,160 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,184 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,387 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,367 |
| Kings of France Quiz | 0 | - | 4.20 | 32,686 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,905 |
| Capitals of German States | 0 | - | 4.74 | 28,933 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,288 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,615 |
| Ancient Greek Words | 0 | - | 4.93 | 111,361 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,413 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,682 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,465 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,817 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,652 |
| Australian Capitals | 0 | - | 4.92 | 62,695 |
| European Physical Geography | 0 | - | 4.26 | 33,471 |
| Geography of Russia | 0 | - | 4.57 | 21,510 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,907 |
| France World Cup Squad 2018 | 0 | - | 4.41 | 33,575 |
| Ligue 1 Champions | 0 | - | 4.19 | 48,394 |
| Tour de France Winners | 0 | - | 4.27 | 15,340 |
| Embarrassing Chapters in French History | 0 | - | 3.65 | 20,093 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,344 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,012 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,049 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,573 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,297 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,611 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,307 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,311 |
| Geography of the British Empire | 0 | - | 4.48 | 39,631 |
| Champions League Top 4 | 0 | - | 4.77 | 135,784 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,643 |
| Asia Map Quiz | 0 | - | 4.99 | 914,591 |
| Countries of Africa | 0 | - | 5.00 | 2,530,348 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,620 |
| African East Coast | 0 | - | 4.96 | 95,838 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,620 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,471 |
| Australia Map Quiz | 0 | - | 4.95 | 343,862 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,098 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,758 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,582 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,886 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,561 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,984 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,264 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,589 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,766 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,421 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,260 |
