| States of Germany | 0 | - | 4.96 | 150,181 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,063 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,492 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,056 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,669 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,543 |
| Regions of Italy | 0 | - | 4.92 | 74,780 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,855 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,425 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,235 |
| Departments of France | 0 | - | 4.93 | 52,873 |
| Famous Germans | 0 | - | 4.50 | 54,642 |
| German Groups of Things | 0 | - | 4.46 | 38,309 |
| Germany True or False? | 0 | - | 4.61 | 48,539 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,381 |
| England or Wales? | 0 | - | 4.94 | 45,343 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,603 |
| Official European Union Languages | 0 | - | 4.97 | 236,937 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,727 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,369 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,160 |
| Name that Greek Letter | 0 | - | 4.94 | 321,764 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,556 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,489 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,577 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,177 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,517 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,248 |
| Celtic Nations | 0 | - | 4.69 | 46,819 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,442 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,884 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,924 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,043 |
| Regions of France | 0 | - | 4.78 | 119,326 |
| France Immigration by Country | 0 | - | 4.72 | 75,986 |
| Capitals of German States | 0 | - | 4.74 | 28,816 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,106 |
| History of Germany | 0 | - | 4.39 | 52,624 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,481 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,568 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,852 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,063 |
| Counties of England | 0 | - | 4.97 | 789,546 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,014 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,404 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,193 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,723 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,357 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,263 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,296 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,845 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,107 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,246 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,763 |
| Word Chain - Germany | 0 | - | 4.31 | 22,479 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,265 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,036 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,158 |
| Champions League Winners | 0 | - | 4.92 | 996,855 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,165 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,389 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,715 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,722 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,243 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,520 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,658 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,646 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,326 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,256 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,267 |
| Word Chain - France | 0 | - | 4.38 | 42,586 |
| Germany Country Quiz | 0 | - | 4.82 | 156,626 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,195 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,786 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,775 |
| Italy Country Quiz | 0 | - | 4.82 | 122,271 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,447 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,131 |
| Italian Foods | 0 | - | 4.31 | 72,220 |
| The Mafia Quiz | 0 | - | 4.46 | 23,211 |
| History of The Netherlands | 0 | - | 4.46 | 17,320 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,115 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,703 |
| Canary Islands | 0 | - | 4.61 | 17,407 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,985 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,179 |
| British Spellings | 0 | - | 4.07 | 99,247 |
| British Groups of Things | 0 | - | 4.25 | 82,689 |
| British Acronyms | 0 | - | 4.39 | 45,629 |
| UK Immigration by Country | 0 | - | 4.94 | 139,715 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,952 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,261 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,362 |
| Geography of Scotland | 0 | - | 4.63 | 21,489 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,561 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,486 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,455 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,605 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,020 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,126 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,862 |
| Slavic Languages | 0 | - | 4.67 | 54,000 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,592 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,528 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,415 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,558 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,965 |
| France A-Z | 0 | - | 4.16 | 38,065 |
| Geography of Germany | 0 | - | 4.35 | 17,090 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,436 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,259 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,478 |
| Languages of Spain | 0 | - | 4.36 | 23,159 |
| Switzerland A-Z | 0 | - | 4.45 | 25,512 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,452 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,926 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,460 |
| Malta Country Quiz | 0 | - | 4.81 | 30,842 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,607 |
| History of Russia Quiz | 0 | - | 4.49 | 31,798 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,580 |
| Famous French People | 0 | - | 4.12 | 27,963 |
| Movies Set in France | 0 | - | 4.26 | 13,076 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,626 |
| History of Paris | 0 | - | 4.24 | 13,617 |
| The Trojan War | 0 | - | 4.83 | 39,449 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,614 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,380 |
| History of Italy | 0 | - | 4.55 | 31,828 |
| Word Chain - Italy | 0 | - | 4.07 | 23,089 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,192 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,046 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,074 |
| Roman Emperors | 0 | - | 4.95 | 118,545 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,491 |
| Famous Nordic People | 0 | - | 4.34 | 19,870 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,547 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,989 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,243 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,471 |
| People on Money - England | 0 | - | 4.29 | 16,566 |
| Name a Valid English City | 0 | - | 4.19 | 16,633 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,345 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,161 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,426 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,929 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,875 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,738 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,244 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,945 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,694 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,652 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,036 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,333 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,721 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,005 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,636 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,961 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,002 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,614 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,400 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,169 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,627 |
| Capitals of French Regions | 0 | - | 4.45 | 15,988 |
| Kings of France Quiz | 0 | - | 4.20 | 32,568 |
| German Loan Words | 0 | - | 4.27 | 135,470 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,515 |
| Ancient Greek Words | 0 | - | 4.92 | 110,735 |
| British to American Food Translation | 0 | - | 3.38 | 51,850 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,276 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,183 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,387 |
| Famous Scottish People | 0 | - | 4.22 | 18,330 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,881 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,594 |
| Australian Capitals | 0 | - | 4.92 | 62,595 |
| European Physical Geography | 0 | - | 4.26 | 33,377 |
| Geography of Russia | 0 | - | 4.57 | 21,430 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,789 |
| History of Austria | 0 | - | 4.70 | 17,759 |
| Austria Country Quiz | 0 | - | 4.57 | 59,367 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,271 |
| France Country Quiz | 0 | - | 4.70 | 133,896 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,917 |
| Geography of the French Empire | 0 | - | 4.48 | 26,941 |
| The French Revolution | 0 | - | 4.46 | 23,790 |
| France Multiple Choice | 0 | - | 4.38 | 40,640 |
| Tour de France Winners | 0 | - | 4.27 | 15,227 |
| History of France | 0 | - | 4.59 | 56,114 |
| Bundesliga Champions | 0 | - | 4.23 | 55,704 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 45,076 |
| German History A-Z | 0 | - | 4.49 | 24,303 |
| German Inventions | 0 | - | 3.91 | 30,185 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,576 |
| Greece Country Quiz | 0 | - | 4.74 | 65,781 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,695 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,642 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,495 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,259 |
