| European Countries by First 2 Letters | 0 | - | 4.95 | 526,313 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,437 |
| States of Germany | 0 | - | 4.96 | 150,024 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,003 |
| Regions of Italy | 0 | - | 4.92 | 74,696 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,803 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,318 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,140 |
| Departments of France | 0 | - | 4.93 | 52,799 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,364 |
| England or Wales? | 0 | - | 4.94 | 45,309 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,576 |
| Official European Union Languages | 0 | - | 4.97 | 236,510 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,696 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,173 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,692 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,534 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,564 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,238 |
| Celtic Nations | 0 | - | 4.69 | 46,810 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,842 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,807 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,858 |
| Regions of France | 0 | - | 4.78 | 119,224 |
| France Immigration by Country | 0 | - | 4.72 | 75,962 |
| Famous Germans | 0 | - | 4.50 | 54,610 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,046 |
| Germany True or False? | 0 | - | 4.61 | 48,531 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,464 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,442 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,779 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,044 |
| Counties of England | 0 | - | 4.97 | 789,100 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,945 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,386 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,441 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,061 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,322 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,863 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,324 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,209 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,230 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,773 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,954 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,112 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,676 |
| Famous Nordic People | 0 | - | 4.34 | 19,853 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,110 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,903 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,072 |
| Champions League Winners | 0 | - | 4.92 | 996,237 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,141 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,517 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,212 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,405 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,503 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,190 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,149 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,179 |
| Word Chain - France | 0 | - | 4.38 | 42,582 |
| Germany Country Quiz | 0 | - | 4.82 | 156,529 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,137 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,770 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,767 |
| Italy Country Quiz | 0 | - | 4.82 | 122,189 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,361 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,071 |
| Italian Foods | 0 | - | 4.31 | 72,177 |
| The Mafia Quiz | 0 | - | 4.46 | 23,206 |
| History of The Netherlands | 0 | - | 4.46 | 17,310 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,949 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,628 |
| Canary Islands | 0 | - | 4.61 | 17,401 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,829 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,148 |
| British Spellings | 0 | - | 4.07 | 99,202 |
| British Groups of Things | 0 | - | 4.25 | 82,669 |
| British Acronyms | 0 | - | 4.39 | 45,618 |
| UK Immigration by Country | 0 | - | 4.94 | 139,617 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,944 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,124 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,258 |
| Geography of Scotland | 0 | - | 4.63 | 21,478 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,481 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,448 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,598 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,981 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,028 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,787 |
| Slavic Languages | 0 | - | 4.67 | 53,975 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,512 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,386 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,553 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,962 |
| France A-Z | 0 | - | 4.16 | 38,056 |
| French History Multiple Choice | 0 | - | 4.55 | 32,876 |
| History of Germany | 0 | - | 4.39 | 52,613 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,824 |
| Name that Greek Letter | 0 | - | 4.94 | 321,638 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,428 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,364 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,244 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,473 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,132 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,487 |
| Switzerland A-Z | 0 | - | 4.45 | 25,508 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,442 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,913 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,684 |
| Malta Country Quiz | 0 | - | 4.81 | 30,825 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,513 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,121 |
| History of Russia Quiz | 0 | - | 4.49 | 31,789 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,563 |
| Famous French People | 0 | - | 4.12 | 27,938 |
| Movies Set in France | 0 | - | 4.26 | 13,073 |
| French Inventions | 0 | - | 4.08 | 13,865 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,588 |
| History of Paris | 0 | - | 4.24 | 13,614 |
| Word Chain - Germany | 0 | - | 4.31 | 22,475 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,456 |
| The Trojan War | 0 | - | 4.83 | 39,425 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,522 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,277 |
| History of Italy | 0 | - | 4.55 | 31,813 |
| Word Chain - Italy | 0 | - | 4.07 | 23,087 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,157 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,041 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,041 |
| Roman Emperors | 0 | - | 4.95 | 118,467 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,479 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,685 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,842 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,543 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,979 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,239 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,463 |
| People on Money - England | 0 | - | 4.29 | 16,562 |
| Name a Valid English City | 0 | - | 4.19 | 16,628 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,323 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,548 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,091 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,389 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,889 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,827 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,695 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,208 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,871 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,663 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,619 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,015 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,296 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,938 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,987 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,611 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,941 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,980 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,587 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,146 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,607 |
| Capitals of French Regions | 0 | - | 4.45 | 15,984 |
| Kings of France Quiz | 0 | - | 4.20 | 32,551 |
| Capitals of German States | 0 | - | 4.74 | 28,811 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,091 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,049 |
| Ancient Greek Words | 0 | - | 4.92 | 110,685 |
| British to American Food Translation | 0 | - | 3.38 | 51,813 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,261 |
| Imagine Lyrics | 0 | - | 4.53 | 43,062 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,292 |
| Famous Scottish People | 0 | - | 4.22 | 18,326 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,171 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,253 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| Geography of Russia | 0 | - | 4.57 | 21,427 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,773 |
| History of Austria | 0 | - | 4.70 | 17,746 |
| Austria Country Quiz | 0 | - | 4.57 | 59,333 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,224 |
| France Country Quiz | 0 | - | 4.70 | 133,816 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,881 |
| Geography of the French Empire | 0 | - | 4.48 | 26,928 |
| The French Revolution | 0 | - | 4.46 | 23,782 |
| France Multiple Choice | 0 | - | 4.38 | 40,634 |
| Tour de France Winners | 0 | - | 4.27 | 15,220 |
| History of France | 0 | - | 4.59 | 56,028 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,383 |
| Greece Country Quiz | 0 | - | 4.74 | 65,751 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,500 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,614 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,477 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,234 |
| Netherlands Country Quiz | 0 | - | 4.50 | 79,956 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,749 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,331 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| Spain Country Quiz | 0 | - | 4.45 | 127,598 |
