| States of Germany | 0 | - | 4.95 | 154,429 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,677 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,748 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,439 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,686 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,436 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,632 |
| Regions of Italy | 0 | - | 4.92 | 77,036 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,789 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,296 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,669 |
| Departments of France | 0 | - | 4.93 | 55,128 |
| Famous Germans | 0 | - | 4.50 | 55,783 |
| German Groups of Things | 0 | - | 4.47 | 38,631 |
| Germany True or False? | 0 | - | 4.61 | 49,019 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,732 |
| England or Wales? | 0 | - | 4.94 | 45,962 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,706 |
| Official European Union Languages | 0 | - | 4.97 | 239,759 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,614 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,812 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,306 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,546 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,066 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,052 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,503 |
| Celtic Nations | 0 | - | 4.61 | 47,094 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,009 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,683 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,674 |
| Regions of France | 0 | - | 4.70 | 122,062 |
| France Immigration by Country | 0 | - | 4.70 | 76,925 |
| Capitals of German States | 0 | - | 4.74 | 29,071 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,534 |
| History of Germany | 0 | - | 4.39 | 52,970 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,459 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,357 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,744 |
| Switzerland A-Z | 0 | - | 4.45 | 25,765 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,404 |
| Counties of England | 0 | - | 4.97 | 802,724 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,800 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,812 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,526 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,835 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,750 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,704 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,962 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,441 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,621 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,780 |
| Word Chain - Germany | 0 | - | 4.31 | 22,681 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,396 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,514 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,000 |
| Champions League Winners | 0 | - | 4.92 | 1,015,877 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,744 |
| Austria Country Quiz | 0 | - | 4.57 | 60,042 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,558 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,379 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,357 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,840 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,798 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,868 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,872 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,931 |
| Austria... or Australia? | 0 | - | 4.67 | 104,760 |
| Famous French People | 0 | - | 4.07 | 36,094 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,774 |
| Word Chain - France | 0 | - | 4.38 | 42,933 |
| Germany Country Quiz | 0 | - | 4.82 | 158,815 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,056 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,232 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,041 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,203 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,027 |
| Italian Foods | 0 | - | 4.30 | 73,256 |
| The Mafia Quiz | 0 | - | 4.46 | 23,436 |
| History of The Netherlands | 0 | - | 4.46 | 17,550 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,465 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,848 |
| Canary Islands | 0 | - | 4.62 | 17,527 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,817 |
| British Spellings | 0 | - | 4.06 | 99,600 |
| British Groups of Things | 0 | - | 4.26 | 83,008 |
| British Acronyms | 0 | - | 4.40 | 45,935 |
| UK Immigration by Country | 0 | - | 4.94 | 141,692 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,105 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,969 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,717 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,104 |
| Geography of Scotland | 0 | - | 4.63 | 21,741 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,082 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,741 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,719 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,307 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 121,650 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,931 |
| Slavic Languages | 0 | - | 4.68 | 54,686 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,079 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,935 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,141 |
| France A-Z | 0 | - | 4.16 | 38,331 |
| French History Multiple Choice | 0 | - | 4.55 | 33,225 |
| Geography of Germany | 0 | - | 4.35 | 17,281 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,770 |
| Name that Greek Letter | 0 | - | 4.93 | 324,951 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,736 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,623 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,253 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,976 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,088 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,089 |
| Malta Country Quiz | 0 | - | 4.81 | 31,231 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,824 |
| History of Russia Quiz | 0 | - | 4.47 | 32,002 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,869 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,679 |
| Movies Set in France | 0 | - | 4.26 | 13,151 |
| French Inventions | 0 | - | 4.10 | 13,927 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,688 |
| History of Paris | 0 | - | 4.24 | 13,682 |
| The Trojan War | 0 | - | 4.83 | 39,982 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,925 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,509 |
| History of Italy | 0 | - | 4.55 | 32,142 |
| Word Chain - Italy | 0 | - | 4.07 | 23,222 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,351 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,160 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,580 |
| Roman Emperors | 0 | - | 4.95 | 121,173 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,816 |
| Famous Nordic People | 0 | - | 4.34 | 20,299 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,645 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,420 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,409 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,575 |
| People on Money - England | 0 | - | 4.29 | 16,643 |
| Name a Valid English City | 0 | - | 4.19 | 16,822 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,660 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,342 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,100 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,452 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,846 |
| European Geography By Letter - D | 0 | - | 4.48 | 116,319 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,006 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,451 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,087 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,563 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,017 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,548 |
| Europe Map Quiz | 0 | - | 5.00 | 4,787,399 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,516 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,171 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,454 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,423 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,399 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,530 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,735 |
| Capitals of French Regions | 0 | - | 4.45 | 16,178 |
| Kings of France Quiz | 0 | - | 4.21 | 32,928 |
| German Loan Words | 0 | - | 4.27 | 140,918 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,671 |
| Ancient Greek Words | 0 | - | 4.93 | 112,439 |
| British to American Food Translation | 0 | - | 3.38 | 52,041 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,565 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,289 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,775 |
| Famous Scottish People | 0 | - | 4.22 | 18,439 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,248 |
| Australian Capitals | 0 | - | 4.92 | 62,828 |
| European Physical Geography | 0 | - | 4.26 | 33,590 |
| Geography of Russia | 0 | - | 4.57 | 21,597 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,126 |
| History of Austria | 0 | - | 4.70 | 17,971 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,243 |
| France Country Quiz | 0 | - | 4.70 | 135,631 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,357 |
| Geography of the French Empire | 0 | - | 4.45 | 27,216 |
| The French Revolution | 0 | - | 4.47 | 24,145 |
| France Multiple Choice | 0 | - | 4.39 | 40,841 |
| Tour de France Winners | 0 | - | 4.27 | 15,516 |
| History of France | 0 | - | 4.61 | 57,593 |
| Bundesliga Champions | 0 | - | 4.25 | 57,290 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 47,487 |
| German History A-Z | 0 | - | 4.49 | 24,913 |
| German Inventions | 0 | - | 3.91 | 30,283 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,683 |
| Greece Country Quiz | 0 | - | 4.74 | 66,637 |
| Italy Country Quiz | 0 | - | 4.77 | 124,024 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,717 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,496 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,942 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,689 |
| Netherlands Country Quiz | 0 | - | 4.52 | 80,932 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,728 |
| The Vikings! | 0 | - | 4.46 | 28,403 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,308 |
| The Portuguese Empire | 0 | - | 4.58 | 12,104 |
| Spain Country Quiz | 0 | - | 4.44 | 129,227 |
