| England or Wales? | 0 | - | 4.94 | 45,486 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,743 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,986 |
| States of Germany | 0 | - | 4.96 | 151,042 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,427 |
| Regions of Italy | 0 | - | 4.92 | 75,192 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 46,773 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,162 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,725 |
| Departments of France | 0 | - | 4.93 | 53,292 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,434 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,845 |
| Official European Union Languages | 0 | - | 4.97 | 237,636 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,305 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,526 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,850 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,743 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,666 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,641 |
| French History Multiple Choice | 0 | - | 4.55 | 32,944 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,314 |
| Celtic Nations | 0 | - | 4.69 | 46,871 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,093 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,275 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,430 |
| Regions of France | 0 | - | 4.77 | 119,944 |
| France Immigration by Country | 0 | - | 4.72 | 76,185 |
| Famous Germans | 0 | - | 4.50 | 54,824 |
| German Groups of Things | 0 | - | 4.46 | 38,380 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,194 |
| Germany True or False? | 0 | - | 4.61 | 48,661 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,737 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,716 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,874 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,053 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,153 |
| Counties of England | 0 | - | 4.97 | 792,429 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,820 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,502 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,445 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,293 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,613 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,584 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,673 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,321 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,258 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,758 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,140 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,247 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,335 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,636 |
| Champions League Winners | 0 | - | 4.92 | 1,000,586 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,293 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,850 |
| The Vikings! | 0 | - | 4.46 | 28,285 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,433 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,172 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,257 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,617 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,740 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,696 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,064 |
| Austria... or Australia? | 0 | - | 4.68 | 104,096 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,692 |
| Word Chain - France | 0 | - | 4.38 | 42,672 |
| Germany Country Quiz | 0 | - | 4.82 | 157,166 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,542 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,867 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,841 |
| Italy Country Quiz | 0 | - | 4.82 | 122,658 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,808 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,443 |
| Italian Foods | 0 | - | 4.31 | 72,443 |
| The Mafia Quiz | 0 | - | 4.46 | 23,252 |
| History of The Netherlands | 0 | - | 4.46 | 17,358 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,392 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,029 |
| Canary Islands | 0 | - | 4.61 | 17,437 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,415 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,377 |
| British Spellings | 0 | - | 4.06 | 99,352 |
| British Groups of Things | 0 | - | 4.25 | 82,776 |
| British Acronyms | 0 | - | 4.39 | 45,702 |
| UK Immigration by Country | 0 | - | 4.94 | 140,198 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,993 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,927 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,840 |
| Geography of Scotland | 0 | - | 4.63 | 21,545 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,226 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,507 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,268 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,819 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,119 |
| Slavic Languages | 0 | - | 4.68 | 54,150 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,631 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,530 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,589 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,000 |
| France A-Z | 0 | - | 4.16 | 38,111 |
| History of Germany | 0 | - | 4.39 | 52,722 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,540 |
| Name that Greek Letter | 0 | - | 4.93 | 322,520 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,520 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,663 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,347 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,537 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,835 |
| Switzerland A-Z | 0 | - | 4.45 | 25,577 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,562 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,967 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,573 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,045 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,893 |
| Malta Country Quiz | 0 | - | 4.81 | 30,930 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,362 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,101 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,565 |
| History of Russia Quiz | 0 | - | 4.49 | 31,842 |
| Famous French People | 0 | - | 4.12 | 28,132 |
| Movies Set in France | 0 | - | 4.26 | 13,096 |
| French Inventions | 0 | - | 4.08 | 13,876 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,862 |
| History of Paris | 0 | - | 4.24 | 13,629 |
| Word Chain - Germany | 0 | - | 4.31 | 22,522 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,739 |
| The Trojan War | 0 | - | 4.83 | 39,559 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,145 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,047 |
| History of Italy | 0 | - | 4.55 | 31,895 |
| Word Chain - Italy | 0 | - | 4.07 | 23,135 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,431 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,066 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,274 |
| Roman Emperors | 0 | - | 4.95 | 119,226 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,562 |
| Famous Nordic People | 0 | - | 4.34 | 19,978 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,721 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,567 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,091 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,300 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,499 |
| People on Money - England | 0 | - | 4.29 | 16,588 |
| Name a Valid English City | 0 | - | 4.19 | 16,670 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,501 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,141 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,672 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,122 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,099 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,979 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,438 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,313 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,025 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,803 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,437 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,598 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,457 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,126 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,770 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,077 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,118 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,795 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,232 |
| Capitals of French Regions | 0 | - | 4.45 | 16,017 |
| Kings of France Quiz | 0 | - | 4.20 | 32,627 |
| Capitals of German States | 0 | - | 4.74 | 28,891 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,198 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,350 |
| Ancient Greek Words | 0 | - | 4.93 | 111,089 |
| British to American Food Translation | 0 | - | 3.38 | 51,907 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,355 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,017 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,122 |
| Famous Scottish People | 0 | - | 4.22 | 18,355 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,490 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,480 |
| Australian Capitals | 0 | - | 4.92 | 62,657 |
| European Physical Geography | 0 | - | 4.26 | 33,421 |
| Geography of Russia | 0 | - | 4.57 | 21,477 |
| History of Austria | 0 | - | 4.70 | 17,798 |
| Austria Country Quiz | 0 | - | 4.57 | 59,528 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,478 |
| France Country Quiz | 0 | - | 4.70 | 134,471 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,033 |
| Geography of the French Empire | 0 | - | 4.45 | 26,999 |
| The French Revolution | 0 | - | 4.46 | 23,860 |
| France Multiple Choice | 0 | - | 4.38 | 40,679 |
| Tour de France Winners | 0 | - | 4.27 | 15,288 |
| History of France | 0 | - | 4.59 | 56,610 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Greece Country Quiz | 0 | - | 4.74 | 65,974 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,113 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,832 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,603 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,359 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,221 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 90,113 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,579 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| Spain Country Quiz | 0 | - | 4.45 | 128,031 |
