| European Countries by First 2 Letters | 0 | - | 4.95 | 531,911 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,017 |
| States of Germany | 0 | - | 4.95 | 154,089 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,569 |
| Regions of Italy | 0 | - | 4.92 | 76,766 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,679 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,074 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,634 |
| Departments of France | 0 | - | 4.93 | 54,907 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,711 |
| England or Wales? | 0 | - | 4.94 | 45,906 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,598 |
| Official European Union Languages | 0 | - | 4.97 | 239,495 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,489 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,335 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,323 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,239 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,009 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,477 |
| Celtic Nations | 0 | - | 4.61 | 47,068 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,908 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,298 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,108 |
| Regions of France | 0 | - | 4.70 | 121,802 |
| France Immigration by Country | 0 | - | 4.70 | 76,846 |
| Famous Germans | 0 | - | 4.50 | 55,700 |
| German Groups of Things | 0 | - | 4.47 | 38,603 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,635 |
| Germany True or False? | 0 | - | 4.61 | 48,975 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,360 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,361 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,238 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,650 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,385 |
| Counties of England | 0 | - | 4.97 | 801,542 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,675 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,020 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,949 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,602 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,346 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,590 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,646 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,324 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,757 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,036 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,400 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,597 |
| Famous Nordic People | 0 | - | 4.34 | 20,255 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,016 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,402 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,726 |
| Champions League Winners | 0 | - | 4.92 | 1,013,812 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,701 |
| The Vikings! | 0 | - | 4.46 | 28,396 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,286 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,815 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,235 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,523 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,517 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,883 |
| Famous French People | 0 | - | 4.07 | 36,019 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,569 |
| Word Chain - France | 0 | - | 4.38 | 42,905 |
| Germany Country Quiz | 0 | - | 4.82 | 158,625 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,938 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,183 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,012 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,047 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,899 |
| Italian Foods | 0 | - | 4.30 | 73,157 |
| The Mafia Quiz | 0 | - | 4.46 | 23,413 |
| History of The Netherlands | 0 | - | 4.46 | 17,531 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,353 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,653 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,643 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,982 |
| British Spellings | 0 | - | 4.06 | 99,569 |
| British Groups of Things | 0 | - | 4.25 | 82,978 |
| British Acronyms | 0 | - | 4.40 | 45,905 |
| UK Immigration by Country | 0 | - | 4.94 | 141,506 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,089 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,726 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,509 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,060 |
| Geography of Scotland | 0 | - | 4.63 | 21,709 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,713 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,711 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,708 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,167 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,338 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,819 |
| Slavic Languages | 0 | - | 4.67 | 54,628 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,021 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,659 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,122 |
| France A-Z | 0 | - | 4.16 | 38,313 |
| History of Germany | 0 | - | 4.39 | 52,951 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,887 |
| Name that Greek Letter | 0 | - | 4.93 | 324,730 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,710 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,594 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,935 |
| Switzerland A-Z | 0 | - | 4.45 | 25,745 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,916 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,077 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,022 |
| Malta Country Quiz | 0 | - | 4.81 | 31,208 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,675 |
| History of Russia Quiz | 0 | - | 4.47 | 31,988 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,837 |
| Movies Set in France | 0 | - | 4.26 | 13,144 |
| French Inventions | 0 | - | 4.10 | 13,919 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,599 |
| History of Paris | 0 | - | 4.24 | 13,670 |
| Word Chain - Germany | 0 | - | 4.31 | 22,661 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,462 |
| The Trojan War | 0 | - | 4.83 | 39,941 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,722 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,209 |
| History of Italy | 0 | - | 4.55 | 32,116 |
| Word Chain - Italy | 0 | - | 4.07 | 23,208 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,226 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,150 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,505 |
| Roman Emperors | 0 | - | 4.95 | 120,951 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,790 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,832 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,997 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,635 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,392 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,389 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,568 |
| People on Money - England | 0 | - | 4.29 | 16,637 |
| Name a Valid English City | 0 | - | 4.19 | 16,799 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,278 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,361 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,087 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,705 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,086 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,109 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,093 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,749 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,091 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,870 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,385 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,601 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,300 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,739 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,459 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,116 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,412 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,378 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,218 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,448 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,667 |
| Capitals of French Regions | 0 | - | 4.45 | 16,157 |
| Kings of France Quiz | 0 | - | 4.20 | 32,885 |
| Capitals of German States | 0 | - | 4.74 | 29,042 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,508 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,119 |
| Ancient Greek Words | 0 | - | 4.93 | 112,287 |
| British to American Food Translation | 0 | - | 3.38 | 52,018 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,542 |
| Imagine Lyrics | 0 | - | 4.53 | 43,506 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,978 |
| Famous Scottish People | 0 | - | 4.22 | 18,428 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,169 |
| Australian Capitals | 0 | - | 4.92 | 62,810 |
| European Physical Geography | 0 | - | 4.26 | 33,579 |
| Geography of Russia | 0 | - | 4.57 | 21,578 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,085 |
| History of Austria | 0 | - | 4.70 | 17,959 |
| Austria Country Quiz | 0 | - | 4.57 | 59,989 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,157 |
| France Country Quiz | 0 | - | 4.70 | 135,476 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,319 |
| Geography of the French Empire | 0 | - | 4.45 | 27,200 |
| The French Revolution | 0 | - | 4.47 | 24,120 |
| France Multiple Choice | 0 | - | 4.39 | 40,816 |
| Tour de France Winners | 0 | - | 4.27 | 15,477 |
| History of France | 0 | - | 4.61 | 57,495 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,546 |
| Greece Country Quiz | 0 | - | 4.74 | 66,558 |
| Italy Country Quiz | 0 | - | 4.77 | 123,911 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,183 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,425 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,908 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,648 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,844 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,666 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,222 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| Spain Country Quiz | 0 | - | 4.44 | 129,094 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,585 |
| American to British Word Translation | 0 | - | 4.14 | 139,565 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,028 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,821 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,383 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,521 |
