| Regions of Spain Quiz | 0 | - | 4.90 | 112,174 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,101 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,131 |
| States of Germany | 0 | - | 4.96 | 149,852 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,933 |
| Regions of Italy | 0 | - | 4.92 | 74,617 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,753 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,068 |
| Departments of France | 0 | - | 4.93 | 52,699 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,346 |
| England or Wales? | 0 | - | 4.94 | 45,287 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,539 |
| Official European Union Languages | 0 | - | 4.97 | 236,392 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,618 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,929 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,366 |
| Name that Greek Letter | 0 | - | 4.94 | 321,474 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,230 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,492 |
| Canary Islands | 0 | - | 4.61 | 17,390 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,535 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,031 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,965 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,296 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,227 |
| Celtic Nations | 0 | - | 4.69 | 46,800 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,107 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,796 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,605 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,602 |
| Regions of France | 0 | - | 4.78 | 119,086 |
| France Immigration by Country | 0 | - | 4.72 | 75,925 |
| Famous Germans | 0 | - | 4.50 | 54,570 |
| German Groups of Things | 0 | - | 4.46 | 38,294 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,020 |
| Germany True or False? | 0 | - | 4.61 | 48,511 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,411 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,269 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,740 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,464 |
| Languages of Spain | 0 | - | 4.36 | 23,137 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,031 |
| Counties of England | 0 | - | 4.97 | 788,537 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,883 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,372 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,314 |
| Top Asian Languages on a Map | 0 | - | 4.94 | 70,611 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,712 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,277 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,133 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,141 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,675 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,674 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,027 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,586 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,540 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,970 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,860 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,984 |
| Champions League Winners | 0 | - | 4.92 | 995,339 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,105 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,492 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,661 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,689 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,173 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,395 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,560 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,292 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,020 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,959 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,088 |
| Word Chain - France | 0 | - | 4.38 | 42,570 |
| Germany Country Quiz | 0 | - | 4.82 | 156,427 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,074 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,744 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,756 |
| Italy Country Quiz | 0 | - | 4.82 | 122,099 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,272 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,001 |
| Italian Foods | 0 | - | 4.30 | 72,131 |
| The Mafia Quiz | 0 | - | 4.46 | 23,194 |
| History of The Netherlands | 0 | - | 4.46 | 17,299 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,952 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,884 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,543 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,694 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,100 |
| British Spellings | 0 | - | 4.07 | 99,192 |
| British Groups of Things | 0 | - | 4.25 | 82,659 |
| British Acronyms | 0 | - | 4.39 | 45,604 |
| UK Immigration by Country | 0 | - | 4.94 | 139,513 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,942 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,006 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,148 |
| Geography of Scotland | 0 | - | 4.63 | 21,468 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,326 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,392 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,428 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Word Scramble - European Countries | 0 | - | 4.74 | 140,928 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,850 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,758 |
| Slavic Languages | 0 | - | 4.67 | 53,938 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,222 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,495 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,362 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,549 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,956 |
| France A-Z | 0 | - | 4.16 | 38,044 |
| History of Germany | 0 | - | 4.39 | 52,595 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,419 |
| History of Spain | 0 | - | 4.29 | 20,992 |
| Switzerland A-Z | 0 | - | 4.45 | 25,496 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,423 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,904 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,414 |
| Malta Country Quiz | 0 | - | 4.81 | 30,797 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,376 |
| History of Russia Quiz | 0 | - | 4.49 | 31,775 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,550 |
| Famous French People | 0 | - | 4.12 | 27,891 |
| Movies Set in France | 0 | - | 4.26 | 13,067 |
| French Inventions | 0 | - | 4.08 | 13,859 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,556 |
| History of Paris | 0 | - | 4.24 | 13,612 |
| Word Chain - Germany | 0 | - | 4.31 | 22,471 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,410 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,397 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,125 |
| History of Italy | 0 | - | 4.55 | 31,801 |
| Word Chain - Italy | 0 | - | 4.07 | 23,080 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,106 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,034 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,990 |
| Roman Emperors | 0 | - | 4.95 | 118,340 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,467 |
| Famous Nordic People | 0 | - | 4.34 | 19,826 |
| Geography of Spain | 0 | - | 4.59 | 21,944 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,233 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,454 |
| People on Money - England | 0 | - | 4.29 | 16,559 |
| Name a Valid English City | 0 | - | 4.19 | 16,623 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,293 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,982 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,326 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 110,837 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,773 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,644 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,166 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,795 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,627 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,592 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,994 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,252 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,367 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,965 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,587 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,916 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,958 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,558 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,348 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,101 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,582 |
| Capitals of French Regions | 0 | - | 4.45 | 15,980 |
| Kings of France Quiz | 0 | - | 4.20 | 32,541 |
| Capitals of German States | 0 | - | 4.74 | 28,799 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,082 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,158 |
| Ancient Greek Words | 0 | - | 4.92 | 110,586 |
| British to American Food Translation | 0 | - | 3.38 | 51,803 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,250 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,880 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,224 |
| Famous Scottish People | 0 | - | 4.22 | 18,321 |
| Song Title Translation - Spanish | 0 | - | 4.56 | 35,699 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,100 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,663 |
| Australian Capitals | 0 | - | 4.92 | 62,586 |
| European Physical Geography | 0 | - | 4.26 | 33,366 |
| Geography of Russia | 0 | - | 4.57 | 21,419 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,757 |
| History of Austria | 0 | - | 4.70 | 17,739 |
| Austria Country Quiz | 0 | - | 4.57 | 59,299 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,177 |
| France Country Quiz | 0 | - | 4.70 | 133,745 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,852 |
| Geography of the French Empire | 0 | - | 4.48 | 26,917 |
| The French Revolution | 0 | - | 4.46 | 23,756 |
| France Multiple Choice | 0 | - | 4.38 | 40,621 |
| Tour de France Winners | 0 | - | 4.27 | 15,197 |
| History of France | 0 | - | 4.59 | 55,917 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,374 |
| Greece Country Quiz | 0 | - | 4.74 | 65,714 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,211 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,568 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,451 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,204 |
| Netherlands Country Quiz | 0 | - | 4.50 | 79,916 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,726 |
