| Regions of Italy | 0 | - | 4.92 | 77,207 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,765 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,847 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,207 |
| States of Germany | 0 | - | 4.95 | 154,811 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,767 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,869 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,498 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,853 |
| Departments of France | 0 | - | 4.93 | 55,327 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,358 |
| England or Wales? | 0 | - | 4.94 | 46,000 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,816 |
| Official European Union Languages | 0 | - | 4.97 | 240,028 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,764 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,232 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,362 |
| Italian Foods | 0 | - | 4.30 | 73,340 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,652 |
| Roman Emperors | 0 | - | 4.95 | 121,357 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,085 |
| History of Italy | 0 | - | 4.55 | 32,169 |
| Celtic Nations | 0 | - | 4.61 | 47,118 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,101 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,027 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,286 |
| Regions of France | 0 | - | 4.70 | 122,284 |
| France Immigration by Country | 0 | - | 4.70 | 76,982 |
| Famous Germans | 0 | - | 4.50 | 55,844 |
| German Groups of Things | 0 | - | 4.47 | 38,654 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,727 |
| Germany True or False? | 0 | - | 4.61 | 49,052 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,500 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,550 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,187 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,493 |
| Italy True or False? | 0 | - | 4.42 | 47,634 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,880 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,426 |
| Counties of England | 0 | - | 4.97 | 803,803 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,909 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,832 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,129 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,578 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,935 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,311 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,525 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,069 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,855 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 89,030 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,105 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,814 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,764 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,927 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,174 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,189 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,571 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,697 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,587 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,206 |
| Champions League Winners | 0 | - | 4.92 | 1,017,332 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,792 |
| Italy Country Quiz | 0 | - | 4.77 | 124,153 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,419 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,410 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,851 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,165 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,200 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,130 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,977 |
| Famous French People | 0 | - | 4.05 | 36,138 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,925 |
| Word Chain - France | 0 | - | 4.38 | 42,950 |
| Germany Country Quiz | 0 | - | 4.82 | 158,983 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,175 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,266 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,063 |
| Figures from Greek Mythology | 0 | - | 4.91 | 189,101 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,159 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,635 |
| The Mafia Quiz | 0 | - | 4.46 | 23,447 |
| History of The Netherlands | 0 | - | 4.46 | 17,567 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,581 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,990 |
| Canary Islands | 0 | - | 4.62 | 17,545 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,053 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,124 |
| British Spellings | 0 | - | 4.06 | 99,621 |
| British Groups of Things | 0 | - | 4.26 | 83,034 |
| British Acronyms | 0 | - | 4.40 | 45,954 |
| UK Immigration by Country | 0 | - | 4.94 | 141,841 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,123 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,186 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,966 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,184 |
| Geography of Scotland | 0 | - | 4.63 | 21,767 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,358 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,764 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,733 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,408 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,435 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,015 |
| Slavic Languages | 0 | - | 4.67 | 54,753 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,138 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,677 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,154 |
| France A-Z | 0 | - | 4.16 | 38,353 |
| French History Multiple Choice | 0 | - | 4.55 | 33,260 |
| History of Germany | 0 | - | 4.39 | 52,992 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,603 |
| Name that Greek Letter | 0 | - | 4.93 | 325,167 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,752 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,330 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,561 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,350 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,248 |
| Roman Names for Places | 0 | - | 4.62 | 58,760 |
| Byzantine History | 0 | - | 4.91 | 29,036 |
| Byzantine Emperors | 0 | - | 4.93 | 14,643 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,755 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,657 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,347 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,475 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,966 |
| Switzerland A-Z | 0 | - | 4.45 | 25,781 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,003 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,099 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,086 |
| Malta Country Quiz | 0 | - | 4.81 | 31,250 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,958 |
| History of Russia Quiz | 0 | - | 4.47 | 32,013 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,892 |
| Movies Set in France | 0 | - | 4.26 | 13,157 |
| French Inventions | 0 | - | 4.10 | 13,930 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,758 |
| History of Paris | 0 | - | 4.24 | 13,684 |
| Word Chain - Germany | 0 | - | 4.31 | 22,693 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,617 |
| The Trojan War | 0 | - | 4.83 | 40,033 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,105 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,762 |
| Italian Inventions | 0 | - | 3.81 | 18,481 |
| Word Chain - Italy | 0 | - | 4.07 | 23,227 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,463 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,249 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,839 |
| Famous Nordic People | 0 | - | 4.34 | 20,325 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,648 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,456 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,420 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,583 |
| People on Money - England | 0 | - | 4.29 | 16,647 |
| Name a Valid English City | 0 | - | 4.19 | 16,836 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,175 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,383 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,901 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,585 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,316 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,719 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,221 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,599 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,245 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,749 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,266 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,874 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,151 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,757 |
| Europe Map Quiz | 0 | - | 5.00 | 4,791,551 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,554 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,225 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,491 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,452 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,545 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,595 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,777 |
| Capitals of French Regions | 0 | - | 4.45 | 16,191 |
| Kings of France Quiz | 0 | - | 4.21 | 32,956 |
| Capitals of German States | 0 | - | 4.74 | 29,087 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,573 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,818 |
| Ancient Greek Words | 0 | - | 4.93 | 112,602 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,735 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,272 |
| British to American Food Translation | 0 | - | 3.38 | 52,058 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,588 |
| Imagine Lyrics | 0 | - | 4.53 | 43,560 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 41,075 |
| Famous Scottish People | 0 | - | 4.22 | 18,442 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,990 |
| Australian Capitals | 0 | - | 4.92 | 62,854 |
| European Physical Geography | 0 | - | 4.26 | 33,610 |
| Geography of Russia | 0 | - | 4.57 | 21,614 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,150 |
| History of Austria | 0 | - | 4.70 | 17,988 |
| Austria Country Quiz | 0 | - | 4.57 | 60,098 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,331 |
| France Country Quiz | 0 | - | 4.70 | 135,760 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,387 |
| Geography of the French Empire | 0 | - | 4.45 | 27,225 |
| The French Revolution | 0 | - | 4.47 | 24,159 |
