| Regions of Italy | 0 | - | 4.92 | 75,303 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,036 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,214 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,801 |
| History of Italy | 0 | - | 4.55 | 31,910 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,519 |
| States of Germany | 0 | - | 4.96 | 151,306 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,660 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 50,728 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,307 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,794 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,627 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,887 |
| Official European Union Languages | 0 | - | 4.97 | 237,790 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,404 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,960 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,466 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,789 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,535 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,780 |
| Italian Foods | 0 | - | 4.31 | 72,515 |
| The Mafia Quiz | 0 | - | 4.46 | 23,259 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,690 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,323 |
| Roman Emperors | 0 | - | 4.95 | 119,407 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,585 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,114 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,331 |
| Celtic Nations | 0 | - | 4.69 | 46,880 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,147 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,515 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,758 |
| Counties of England | 0 | - | 4.97 | 793,166 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,980 |
| Regions of France | 0 | - | 4.77 | 120,087 |
| France Immigration by Country | 0 | - | 4.72 | 76,267 |
| Famous Germans | 0 | - | 4.50 | 54,874 |
| German Groups of Things | 0 | - | 4.46 | 38,397 |
| Germany True or False? | 0 | - | 4.61 | 48,675 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,765 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,109 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,167 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,902 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,652 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,665 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,320 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,736 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,444 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,581 |
| History of Austria | 0 | - | 4.70 | 17,813 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,915 |
| Geography of the French Empire | 0 | - | 4.45 | 27,007 |
| The French Revolution | 0 | - | 4.46 | 23,875 |
| France Multiple Choice | 0 | - | 4.38 | 40,687 |
| History of France | 0 | - | 4.59 | 56,673 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,300 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,441 |
| Word Chain - Italy | 0 | - | 4.07 | 23,139 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,074 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,875 |
| The Vikings! | 0 | - | 4.46 | 28,298 |
| The Portuguese Empire | 0 | - | 4.58 | 12,034 |
| American to British Word Translation | 0 | - | 4.13 | 138,444 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,823 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,397 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,755 |
| Champions League Winners | 0 | - | 4.92 | 1,001,553 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,038 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,852 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,241 |
| Departments of France | 0 | - | 4.93 | 53,448 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,402 |
| England or Wales? | 0 | - | 4.94 | 45,518 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,389 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,518 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,633 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,346 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,996 |
| Slavic Languages | 0 | - | 4.68 | 54,189 |
| Word Chain - France | 0 | - | 4.38 | 42,692 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,172 |
| History of The Netherlands | 0 | - | 4.46 | 17,374 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,376 |
| Canary Islands | 0 | - | 4.61 | 17,445 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,484 |
| British Spellings | 0 | - | 4.06 | 99,365 |
| British Groups of Things | 0 | - | 4.25 | 82,798 |
| British Acronyms | 0 | - | 4.39 | 45,720 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,001 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,188 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,661 |
| Geography of Germany | 0 | - | 4.35 | 17,140 |
| History of Germany | 0 | - | 4.39 | 52,739 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,065 |
| Name that Greek Letter | 0 | - | 4.93 | 322,720 |
| Italian Inventions | 0 | - | 3.81 | 18,429 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,648 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,811 |
| Roman Names for Places | 0 | - | 4.62 | 58,089 |
| History of Spain | 0 | - | 4.23 | 21,051 |
| Languages of Spain | 0 | - | 4.36 | 23,246 |
| British to American Word Translation | 0 | - | 3.74 | 254,933 |
| British Foods by Description | 0 | - | 3.94 | 48,295 |
| British and American Word Differences | 0 | - | 2.63 | 46,834 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,555 |
| Bridges of London | 0 | - | 4.17 | 10,085 |
| British Sport Trivia | 0 | - | 4.37 | 20,416 |
| Famous Welsh People | 0 | - | 4.29 | 11,124 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,520 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,662 |
| History of Russia Quiz | 0 | - | 4.49 | 31,858 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,661 |
| Famous French People | 0 | - | 4.12 | 28,157 |
| Movies Set in France | 0 | - | 4.26 | 13,101 |
| French Inventions | 0 | - | 4.08 | 13,881 |
| History of Paris | 0 | - | 4.24 | 13,632 |
| Word Chain - Germany | 0 | - | 4.31 | 22,536 |
| The Trojan War | 0 | - | 4.83 | 39,591 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,271 |
| Famous Nordic People | 0 | - | 4.34 | 20,003 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,572 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,745 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,307 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,503 |
| People on Money - England | 0 | - | 4.29 | 16,593 |
| Name a Valid English City | 0 | - | 4.19 | 16,684 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,533 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,317 |
| Australian Capitals | 0 | - | 4.92 | 62,670 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,728 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,160 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,133 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,021 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,475 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,381 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,053 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,829 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,462 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,646 |
| Europe Map Quiz | 0 | - | 5.00 | 4,748,568 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,156 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,809 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,093 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,136 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,822 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,279 |
| Capitals of French Regions | 0 | - | 4.45 | 16,025 |
| Capitals of German States | 0 | - | 4.74 | 28,901 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,226 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,731 |
| Ancient Greek Words | 0 | - | 4.93 | 111,175 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,147 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,196 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,228 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,731 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,073 |
| European Physical Geography | 0 | - | 4.26 | 33,436 |
| Geography of Russia | 0 | - | 4.57 | 21,492 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,874 |
| Italian History A-Z | 0 | - | 4.21 | 17,637 |
| Serie A Champions | 0 | - | 4.29 | 58,025 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,034 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,934 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,468 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,478 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,278 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,162 |
| Geography of the British Empire | 0 | - | 4.48 | 39,598 |
| Champions League Top 4 | 0 | - | 4.77 | 135,165 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,444,597 |
| Asia Map Quiz | 0 | - | 4.99 | 911,801 |
| Countries of Africa | 0 | - | 5.00 | 2,523,691 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,358 |
| African East Coast | 0 | - | 4.96 | 95,604 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,435 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,261 |
| Australia Map Quiz | 0 | - | 4.94 | 343,426 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,626 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,277 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,503 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,111 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,428 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,463 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,880 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,134 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,752 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,698 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,383 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,101 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,447 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,549 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,670 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,451 |
| European Geography A-Z | 0 | - | 4.29 | 49,131 |
| Country Codes of Europe | 0 | - | 3.43 | 13,682 |
| The Only European Country ... | 0 | - | 4.91 | 215,392 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,461 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 27,942 |
| Austria... or Australia? | 0 | - | 4.68 | 104,140 |
| Presidents of France | 0 | - | 4.25 | 23,995 |
