| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,038 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,957 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,007 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,404 |
| Official European Union Languages | 0 | - | 4.97 | 239,089 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,240 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,529 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,809 |
| Slavic Languages | 0 | - | 4.68 | 54,515 |
| Austria... or Australia? | 0 | - | 4.68 | 104,565 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,152 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,797 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,812 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,940 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,824 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,445 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,721 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,701 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,870 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,522 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,251 |
| Champions League Winners | 0 | - | 4.92 | 1,010,939 |
| Celtic Nations | 0 | - | 4.69 | 47,014 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,219 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,474 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,534 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,697 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,491 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,967 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,457 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,290 |
| Departments of France | 0 | - | 4.93 | 54,617 |
| States of Germany | 0 | - | 4.95 | 153,555 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,363 |
| Regions of Italy | 0 | - | 4.92 | 76,420 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,639 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,515 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,662 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,494 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| England or Wales? | 0 | - | 4.94 | 45,828 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,231 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,783 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,632 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,693 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,910 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,618 |
| Name that Greek Letter | 0 | - | 4.93 | 324,340 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,741 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,668 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,955 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,843 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,433 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,278 |
| The Trojan War | 0 | - | 4.83 | 39,848 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,410 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,728 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,683 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,033 |
| Roman Emperors | 0 | - | 4.95 | 120,548 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,532 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,127 |
| Iran... or Iraq? | 0 | - | 4.32 | 33,618 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,455 |
| History of Russia Quiz | 0 | - | 4.47 | 31,970 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,258 |
| Ancient Greek Words | 0 | - | 4.93 | 112,040 |
| History of Italy | 0 | - | 4.55 | 32,085 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,058 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,380 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,324 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,748 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,323 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,334 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,190 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,102 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,501 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,885 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,440 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,109 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,487 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,286 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,102 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,354 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,940 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,539 |
| European Physical Geography | 0 | - | 4.26 | 33,554 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,391 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,047 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,344 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,320 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,966 |
| Which European Country - Multiple Choice | 0 | - | 4.51 | 84,494 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,581 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| History of Austria | 0 | - | 4.70 | 17,924 |
| Capitals of French Regions | 0 | - | 4.45 | 16,125 |
| Regions of France | 0 | - | 4.70 | 121,425 |
| France Immigration by Country | 0 | - | 4.70 | 76,720 |
| Geography of the French Empire | 0 | - | 4.45 | 27,169 |
| The French Revolution | 0 | - | 4.47 | 24,079 |
| France Multiple Choice | 0 | - | 4.39 | 40,783 |
| History of France | 0 | - | 4.61 | 57,351 |
| Famous Germans | 0 | - | 4.50 | 55,572 |
| German Groups of Things | 0 | - | 4.46 | 38,554 |
| Capitals of German States | 0 | - | 4.74 | 29,005 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,419 |
| Germany True or False? | 0 | - | 4.61 | 48,920 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,196 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,869 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,962 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,911 |
| Italy True or False? | 0 | - | 4.42 | 47,506 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,549 |
| The Vikings! | 0 | - | 4.46 | 28,375 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,247 |
| The Portuguese Empire | 0 | - | 4.58 | 12,087 |
| American to British Word Translation | 0 | - | 4.14 | 139,401 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,365 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,971 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,205 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,513 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,452 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,502 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,716 |
| UK General Knowledge Multiple Choice #1 | 0 | - | 4.24 | 20,837 |
| UK General Knowledge Multiple Choice #2 | 0 | - | 4.33 | 22,730 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,739 |
| Champions League Top 4 | 0 | - | 4.77 | 137,572 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,938 |
| Which Asian Country? | 0 | - | 4.64 | 57,651 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,758 |
| Which African Country? | 0 | - | 4.58 | 36,410 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,867 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,040 |
| Australian Capitals | 0 | - | 4.92 | 62,776 |
| Australia Map Quiz | 0 | - | 4.95 | 345,409 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,743 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,876 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,019 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,773 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,092 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,853 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,317 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,348 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,696 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,546 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,231 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,978 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,608 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,085 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,214 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,774 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,495 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,983 |
| European Geography A-Z | 0 | - | 4.29 | 49,387 |
| The Only European Country ... | 0 | - | 4.91 | 217,735 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,809 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,689 |
| Seas of Europe | 0 | - | 4.37 | 84,769 |
| European Geographic Groups of Four | 0 | - | 4.58 | 16,633 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,342 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,650 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,098 |
| Famous French People | 0 | - | 4.07 | 35,920 |
| Presidents of France | 0 | - | 4.25 | 24,238 |
| France A-Z | 0 | - | 4.16 | 38,283 |
| Word Chain - France | 0 | - | 4.38 | 42,866 |
| France True or False? | 0 | - | 4.44 | 39,996 |
| French History Multiple Choice | 0 | - | 4.55 | 33,147 |
| History of Germany | 0 | - | 4.39 | 52,914 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,116 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,969 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,003 |
| Italian Foods | 0 | - | 4.30 | 73,011 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,468 |
| The Mafia Quiz | 0 | - | 4.46 | 23,393 |
| Ancient Roman Trivia #2 | 0 | - | 4.59 | 41,925 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,059 |
| Roman Names for Places | 0 | - | 4.62 | 58,493 |
| Byzantine History | 0 | - | 4.91 | 28,942 |
| Byzantine Emperors | 0 | - | 4.92 | 14,418 |
| History of The Netherlands | 0 | - | 4.46 | 17,500 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,079 |
| Most Common First Names in Spain | 0 | - | 4.27 | 47,068 |
| Canary Islands | 0 | - | 4.62 | 17,499 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,224 |
| Switzerland A-Z | 0 | - | 4.45 | 25,701 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,865 |
| British Spellings | 0 | - | 4.06 | 99,527 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,806 |
| British Groups of Things | 0 | - | 4.25 | 82,932 |
| British Acronyms | 0 | - | 4.40 | 45,871 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,057 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,064 |
| British Monopoly Board | 0 | - | 4.52 | 41,209 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,995 |
| Geography of Scotland | 0 | - | 4.63 | 21,677 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,903 |
