| European Countries by First 2 Letters | 0 | - | 4.95 | 532,998 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,405 |
| States of Germany | 0 | - | 4.95 | 154,903 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,796 |
| Regions of Italy | 0 | - | 4.92 | 77,247 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,905 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,564 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,890 |
| Departments of France | 0 | - | 4.93 | 55,382 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,775 |
| England or Wales? | 0 | - | 4.94 | 46,018 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,852 |
| Official European Union Languages | 0 | - | 4.97 | 240,354 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,804 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,366 |
| Slavic Languages | 0 | - | 4.67 | 54,776 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,377 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,099 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,900 |
| Celtic Nations | 0 | - | 4.61 | 47,125 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,128 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,148 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,461 |
| Regions of France | 0 | - | 4.70 | 122,376 |
| France Immigration by Country | 0 | - | 4.70 | 77,002 |
| Famous Germans | 0 | - | 4.50 | 55,864 |
| German Groups of Things | 0 | - | 4.47 | 38,666 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,745 |
| Germany True or False? | 0 | - | 4.61 | 49,062 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,509 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,567 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,530 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,930 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,439 |
| Counties of England | 0 | - | 4.97 | 804,122 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,942 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,842 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,547 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,534 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,085 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,892 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,060 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,157 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,904 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,798 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,963 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,811 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,617 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,258 |
| Champions League Winners | 0 | - | 4.92 | 1,017,797 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,814 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,157 |
| History of Austria | 0 | - | 4.70 | 17,991 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,438 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,435 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,861 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,288 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,283 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,219 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,984 |
| Austria... or Australia? | 0 | - | 4.67 | 104,832 |
| Famous French People | 0 | - | 4.05 | 36,155 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,982 |
| Word Chain - France | 0 | - | 4.38 | 42,960 |
| Germany Country Quiz | 0 | - | 4.82 | 159,035 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,218 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,277 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,069 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,407 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,204 |
| Italian Foods | 0 | - | 4.30 | 73,379 |
| The Mafia Quiz | 0 | - | 4.46 | 23,451 |
| History of The Netherlands | 0 | - | 4.46 | 17,571 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,603 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,016 |
| Canary Islands | 0 | - | 4.62 | 17,549 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,096 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,149 |
| British Spellings | 0 | - | 4.06 | 99,625 |
| British Groups of Things | 0 | - | 4.26 | 83,041 |
| British Acronyms | 0 | - | 4.40 | 45,961 |
| UK Immigration by Country | 0 | - | 4.94 | 141,882 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,125 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,239 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,020 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,202 |
| Geography of Scotland | 0 | - | 4.63 | 21,804 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,443 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,778 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,740 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,435 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,875 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,043 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,234 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,679 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,158 |
| France A-Z | 0 | - | 4.16 | 38,359 |
| French History Multiple Choice | 0 | - | 4.55 | 33,276 |
| History of Germany | 0 | - | 4.39 | 52,998 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,827 |
| Name that Greek Letter | 0 | - | 4.93 | 325,238 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,758 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,788 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,665 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,364 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,002 |
| Switzerland A-Z | 0 | - | 4.45 | 25,786 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,017 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,105 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,147 |
| Malta Country Quiz | 0 | - | 4.81 | 31,256 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,998 |
| History of Russia Quiz | 0 | - | 4.47 | 32,024 |
| Movies Set in France | 0 | - | 4.26 | 13,157 |
| French Inventions | 0 | - | 4.10 | 13,932 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,790 |
| History of Paris | 0 | - | 4.24 | 13,684 |
| Word Chain - Germany | 0 | - | 4.31 | 22,696 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,646 |
| The Trojan War | 0 | - | 4.83 | 40,046 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,161 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,849 |
| History of Italy | 0 | - | 4.55 | 32,182 |
| Word Chain - Italy | 0 | - | 4.07 | 23,228 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,513 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,177 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,682 |
| Roman Emperors | 0 | - | 4.95 | 121,408 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,845 |
| Famous Nordic People | 0 | - | 4.34 | 20,335 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,648 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,465 |
| 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 | 17,550 |
| Name a Valid English City | 0 | - | 4.19 | 16,837 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,970 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,630 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,342 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,740 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,248 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,704 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,262 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,774 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,277 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,884 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,164 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,779 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,838 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,567 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,238 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,506 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,463 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,560 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,609 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,788 |
| Capitals of French Regions | 0 | - | 4.45 | 16,195 |
| Kings of France Quiz | 0 | - | 4.22 | 32,966 |
| Capitals of German States | 0 | - | 4.74 | 29,093 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,579 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,360 |
| Ancient Greek Words | 0 | - | 4.93 | 112,636 |
| British to American Food Translation | 0 | - | 3.38 | 52,061 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,599 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,678 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,976 |
| Famous Scottish People | 0 | - | 4.22 | 18,443 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,250 |
| Australian Capitals | 0 | - | 4.92 | 62,861 |
| European Physical Geography | 0 | - | 4.26 | 33,616 |
| Geography of Russia | 0 | - | 4.57 | 21,616 |
| Austria Country Quiz | 0 | - | 4.57 | 60,112 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,360 |
| France Country Quiz | 0 | - | 4.70 | 135,786 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,397 |
| Geography of the French Empire | 0 | - | 4.45 | 27,230 |
| The French Revolution | 0 | - | 4.47 | 24,165 |
| France Multiple Choice | 0 | - | 4.39 | 40,874 |
| Tour de France Winners | 0 | - | 4.27 | 15,541 |
| History of France | 0 | - | 4.61 | 57,718 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,573 |
| Greece Country Quiz | 0 | - | 4.74 | 66,700 |
| Italy Country Quiz | 0 | - | 4.77 | 124,196 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,353 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,609 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,979 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,722 |
| Netherlands Country Quiz | 0 | - | 4.52 | 81,031 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,795 |
| The Vikings! | 0 | - | 4.46 | 28,419 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,405 |
| The Portuguese Empire | 0 | - | 4.58 | 12,117 |
| Spain Country Quiz | 0 | - | 4.44 | 129,374 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,711 |
| American to British Word Translation | 0 | - | 4.14 | 139,810 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,091 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,880 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,597 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,636 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,488 |
