| States of Germany | 0 | - | 4.95 | 154,130 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,584 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,636 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,962 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,640 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,369 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,098 |
| Regions of Italy | 0 | - | 4.92 | 76,786 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,689 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,107 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,661 |
| Departments of France | 0 | - | 4.93 | 54,920 |
| Famous Germans | 0 | - | 4.50 | 55,708 |
| German Groups of Things | 0 | - | 4.47 | 38,604 |
| Germany True or False? | 0 | - | 4.61 | 48,978 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,714 |
| England or Wales? | 0 | - | 4.94 | 45,910 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,607 |
| Official European Union Languages | 0 | - | 4.97 | 239,519 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,507 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,388 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,249 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,471 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,993 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,015 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,479 |
| Celtic Nations | 0 | - | 4.61 | 47,071 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,918 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,319 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,172 |
| Regions of France | 0 | - | 4.70 | 121,828 |
| France Immigration by Country | 0 | - | 4.70 | 76,850 |
| Capitals of German States | 0 | - | 4.74 | 29,045 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,511 |
| History of Germany | 0 | - | 4.39 | 52,957 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,366 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,256 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,658 |
| Switzerland A-Z | 0 | - | 4.45 | 25,749 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,386 |
| Counties of England | 0 | - | 4.97 | 801,655 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,690 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,483 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,601 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,655 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,346 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,783 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,091 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,427 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,630 |
| Word Chain - Germany | 0 | - | 4.31 | 22,666 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,056 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,416 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,744 |
| Champions League Winners | 0 | - | 4.92 | 1,014,039 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,706 |
| Austria Country Quiz | 0 | - | 4.57 | 59,995 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,548 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,327 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,295 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,816 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,284 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,563 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,547 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,887 |
| Austria... or Australia? | 0 | - | 4.68 | 104,690 |
| Famous French People | 0 | - | 4.07 | 36,026 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,595 |
| Word Chain - France | 0 | - | 4.38 | 42,907 |
| Germany Country Quiz | 0 | - | 4.82 | 158,644 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,950 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,191 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,013 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,077 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,909 |
| Italian Foods | 0 | - | 4.30 | 73,171 |
| The Mafia Quiz | 0 | - | 4.46 | 23,417 |
| History of The Netherlands | 0 | - | 4.46 | 17,531 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,365 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,674 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,662 |
| British Spellings | 0 | - | 4.06 | 99,574 |
| British Groups of Things | 0 | - | 4.25 | 82,981 |
| British Acronyms | 0 | - | 4.40 | 45,909 |
| UK Immigration by Country | 0 | - | 4.94 | 141,525 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,090 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,752 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,536 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,066 |
| Geography of Scotland | 0 | - | 4.63 | 21,713 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,752 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,712 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,708 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,177 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,379 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,829 |
| Slavic Languages | 0 | - | 4.67 | 54,632 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,026 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,870 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,124 |
| France A-Z | 0 | - | 4.16 | 38,316 |
| Geography of Germany | 0 | - | 4.35 | 17,251 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,955 |
| Name that Greek Letter | 0 | - | 4.93 | 324,752 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,711 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,597 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,992 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,922 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,077 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,025 |
| Malta Country Quiz | 0 | - | 4.81 | 31,211 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,692 |
| History of Russia Quiz | 0 | - | 4.47 | 31,988 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,840 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,499 |
| Movies Set in France | 0 | - | 4.26 | 13,144 |
| French Inventions | 0 | - | 4.10 | 13,919 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,607 |
| History of Paris | 0 | - | 4.24 | 13,671 |
| The Trojan War | 0 | - | 4.83 | 39,944 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,749 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,230 |
| History of Italy | 0 | - | 4.55 | 32,117 |
| Word Chain - Italy | 0 | - | 4.07 | 23,209 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,237 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,152 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,512 |
| Roman Emperors | 0 | - | 4.95 | 120,972 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,790 |
| Famous Nordic People | 0 | - | 4.34 | 20,261 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,636 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,401 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,391 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,569 |
| People on Money - England | 0 | - | 4.29 | 16,638 |
| Name a Valid English City | 0 | - | 4.19 | 16,801 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,388 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,113 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,713 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,092 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,174 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,101 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,754 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,108 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,875 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,391 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,610 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,316 |
| Europe Map Quiz | 0 | - | 5.00 | 4,782,203 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,463 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,121 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,414 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,383 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,224 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,455 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,673 |
| Capitals of French Regions | 0 | - | 4.45 | 16,159 |
| Kings of France Quiz | 0 | - | 4.20 | 32,887 |
| German Loan Words | 0 | - | 4.27 | 140,674 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,188 |
| Ancient Greek Words | 0 | - | 4.93 | 112,298 |
| British to American Food Translation | 0 | - | 3.38 | 52,022 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,547 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,980 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,620 |
| Famous Scottish People | 0 | - | 4.22 | 18,430 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,303 |
| Australian Capitals | 0 | - | 4.92 | 62,811 |
| European Physical Geography | 0 | - | 4.26 | 33,581 |
| Geography of Russia | 0 | - | 4.57 | 21,582 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,088 |
| History of Austria | 0 | - | 4.70 | 17,962 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,167 |
| France Country Quiz | 0 | - | 4.70 | 135,496 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,322 |
| Geography of the French Empire | 0 | - | 4.45 | 27,201 |
| The French Revolution | 0 | - | 4.47 | 24,124 |
| France Multiple Choice | 0 | - | 4.39 | 40,821 |
| Tour de France Winners | 0 | - | 4.27 | 15,482 |
| History of France | 0 | - | 4.61 | 57,506 |
| Bundesliga Champions | 0 | - | 4.25 | 57,152 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 46,423 |
| German History A-Z | 0 | - | 4.49 | 24,872 |
| German Inventions | 0 | - | 3.91 | 30,278 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,676 |
| Greece Country Quiz | 0 | - | 4.74 | 66,567 |
| Italy Country Quiz | 0 | - | 4.77 | 123,928 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,241 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,440 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,911 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,653 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,854 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,671 |
| The Vikings! | 0 | - | 4.46 | 28,397 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,236 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| Spain Country Quiz | 0 | - | 4.44 | 129,103 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,592 |
| American to British Word Translation | 0 | - | 4.14 | 139,574 |
