| Netherlands Immigration by Country | 0 | - | 4.93 | 52,911 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,028 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,435 |
| States of Germany | 0 | - | 4.95 | 154,928 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,803 |
| Regions of Italy | 0 | - | 4.92 | 77,257 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,574 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,896 |
| Departments of France | 0 | - | 4.93 | 55,390 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,779 |
| England or Wales? | 0 | - | 4.94 | 46,031 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,856 |
| Official European Union Languages | 0 | - | 4.97 | 240,363 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,811 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,391 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,379 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,103 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,850 |
| Celtic Nations | 0 | - | 4.61 | 47,127 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,131 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,172 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,496 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,160 |
| Regions of France | 0 | - | 4.70 | 122,395 |
| France Immigration by Country | 0 | - | 4.70 | 77,005 |
| Famous Germans | 0 | - | 4.50 | 55,869 |
| German Groups of Things | 0 | - | 4.47 | 38,668 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,749 |
| Germany True or False? | 0 | - | 4.61 | 49,063 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,509 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,569 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,532 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,931 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,451 |
| Counties of England | 0 | - | 4.97 | 804,209 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,952 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,843 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,625 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,534 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,093 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,898 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,070 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,167 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,920 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,808 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,978 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,832 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,627 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,274 |
| Champions League Winners | 0 | - | 4.92 | 1,017,934 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,818 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,982 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,439 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,445 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,865 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,315 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,303 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,245 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,989 |
| Famous French People | 0 | - | 4.05 | 36,156 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,998 |
| Word Chain - France | 0 | - | 4.38 | 42,960 |
| Germany Country Quiz | 0 | - | 4.82 | 159,046 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,229 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,278 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,072 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,426 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,217 |
| Italian Foods | 0 | - | 4.30 | 73,385 |
| The Mafia Quiz | 0 | - | 4.46 | 23,451 |
| History of The Netherlands | 0 | - | 4.46 | 17,571 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,617 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,029 |
| Canary Islands | 0 | - | 4.62 | 17,549 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,108 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,154 |
| British Spellings | 0 | - | 4.06 | 99,625 |
| British Groups of Things | 0 | - | 4.26 | 83,041 |
| British Acronyms | 0 | - | 4.40 | 45,966 |
| UK Immigration by Country | 0 | - | 4.94 | 141,893 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,126 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,259 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,030 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,218 |
| Geography of Scotland | 0 | - | 4.63 | 21,811 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,462 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,783 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,740 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,437 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,980 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,047 |
| Slavic Languages | 0 | - | 4.67 | 54,780 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,257 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,680 |
| France A-Z | 0 | - | 4.16 | 38,362 |
| French History Multiple Choice | 0 | - | 4.55 | 33,277 |
| History of Germany | 0 | - | 4.39 | 53,001 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,890 |
| Name that Greek Letter | 0 | - | 4.93 | 325,252 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,758 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,795 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,665 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,370 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,504 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,005 |
| Switzerland A-Z | 0 | - | 4.45 | 25,789 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,023 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,107 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,151 |
| Malta Country Quiz | 0 | - | 4.81 | 31,262 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,003 |
| History of Russia Quiz | 0 | - | 4.47 | 32,026 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,903 |
| Movies Set in France | 0 | - | 4.26 | 13,158 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,800 |
| History of Paris | 0 | - | 4.24 | 13,686 |
| Word Chain - Germany | 0 | - | 4.31 | 22,696 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,650 |
| The Trojan War | 0 | - | 4.83 | 40,061 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,186 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,878 |
| History of Italy | 0 | - | 4.55 | 32,183 |
| Word Chain - Italy | 0 | - | 4.07 | 23,229 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,518 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,178 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,687 |
| Roman Emperors | 0 | - | 4.95 | 121,424 |
| Famous Nordic People | 0 | - | 4.34 | 20,336 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,649 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,467 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,424 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,584 |
| People on Money - England | 0 | - | 4.29 | 18,511 |
| Name a Valid English City | 0 | - | 4.19 | 16,837 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,022 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,653 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,344 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,748 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,254 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,731 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,269 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,777 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,277 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,886 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,166 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,784 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,169 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,571 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,240 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,513 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,465 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,560 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,613 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,790 |
| Capitals of French Regions | 0 | - | 4.45 | 16,201 |
| Kings of France Quiz | 0 | - | 4.22 | 32,969 |
| Capitals of German States | 0 | - | 4.74 | 29,094 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,579 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,394 |
| Ancient Greek Words | 0 | - | 4.93 | 112,647 |
| British to American Food Translation | 0 | - | 3.38 | 52,062 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,600 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,693 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,991 |
| Famous Scottish People | 0 | - | 4.22 | 18,443 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,292 |
| Australian Capitals | 0 | - | 4.92 | 62,861 |
| European Physical Geography | 0 | - | 4.26 | 33,617 |
| Geography of Russia | 0 | - | 4.57 | 21,617 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,157 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Austria Country Quiz | 0 | - | 4.57 | 60,115 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,367 |
| France Country Quiz | 0 | - | 4.70 | 135,796 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,398 |
| Geography of the French Empire | 0 | - | 4.45 | 27,233 |
| The French Revolution | 0 | - | 4.47 | 24,165 |
| France Multiple Choice | 0 | - | 4.39 | 40,875 |
| Tour de France Winners | 0 | - | 4.27 | 15,544 |
| History of France | 0 | - | 4.61 | 57,721 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,575 |
| Greece Country Quiz | 0 | - | 4.74 | 66,707 |
| Italy Country Quiz | 0 | - | 4.77 | 124,207 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,387 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,615 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,723 |
| Netherlands Country Quiz | 0 | - | 4.52 | 81,039 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,799 |
| The Vikings! | 0 | - | 4.46 | 28,421 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,412 |
| The Portuguese Empire | 0 | - | 4.58 | 12,117 |
| Spain Country Quiz | 0 | - | 4.44 | 129,387 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,720 |
| American to British Word Translation | 0 | - | 4.14 | 139,816 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,091 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,882 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,604 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,639 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,492 |
