| States of Germany | 0 | - | 4.96 | 152,306 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,974 |
| German Groups of Things | 0 | - | 4.46 | 38,467 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,233 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,329 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,950 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,985 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,821 |
| Regions of Italy | 0 | - | 4.92 | 75,767 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,067 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,832 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,122 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,032 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,005 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,620 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,949 |
| Departments of France | 0 | - | 4.93 | 54,006 |
| Famous Germans | 0 | - | 4.50 | 55,257 |
| Germany True or False? | 0 | - | 4.61 | 48,773 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,534 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,174 |
| England or Wales? | 0 | - | 4.94 | 45,651 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,073 |
| Official European Union Languages | 0 | - | 4.97 | 238,354 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,753 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,916 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,749 |
| Word Chain - Germany | 0 | - | 4.31 | 22,577 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,948 |
| Word Chain - France | 0 | - | 4.38 | 42,766 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,137 |
| Italian Foods | 0 | - | 4.30 | 72,735 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,801 |
| British Groups of Things | 0 | - | 4.25 | 82,858 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,378 |
| Celtic Nations | 0 | - | 4.69 | 46,925 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,247 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,913 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,442 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,200 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,217 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,328 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,261 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,290 |
| Regions of France | 0 | - | 4.75 | 120,629 |
| France Immigration by Country | 0 | - | 4.70 | 76,470 |
| Capitals of German States | 0 | - | 4.74 | 28,945 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,311 |
| History of Germany | 0 | - | 4.39 | 52,801 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,960 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,419 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,307 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,601 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,250 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,660 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,014 |
| Counties of England | 0 | - | 4.97 | 795,931 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,611 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,378 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,316 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,044 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,027 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,127 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,882 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,881 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,293 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,703 |
| Word Chain - Italy | 0 | - | 4.07 | 23,157 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,298 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,940 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,391 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,336 |
| Name a Valid English City | 0 | - | 4.19 | 16,713 |
| Champions League Winners | 0 | - | 4.92 | 1,005,704 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,199 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,460 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,098 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,633 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,685 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,258 |
| Name a Valid African Country | 0 | - | 4.98 | 153,955 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,356 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,652 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,618 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,554 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,664 |
| Famous French People | 0 | - | 4.06 | 35,421 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,628 |
| Germany Country Quiz | 0 | - | 4.82 | 157,752 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,023 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,970 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,901 |
| Italy Country Quiz | 0 | - | 4.82 | 123,324 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,268 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,935 |
| The Mafia Quiz | 0 | - | 4.46 | 23,314 |
| History of The Netherlands | 0 | - | 4.46 | 17,428 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,810 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,552 |
| Canary Islands | 0 | - | 4.62 | 17,473 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,886 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,664 |
| British Spellings | 0 | - | 4.06 | 99,434 |
| British to American Food Translation | 0 | - | 3.38 | 51,956 |
| British Acronyms | 0 | - | 4.40 | 45,783 |
| UK Immigration by Country | 0 | - | 4.94 | 140,802 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,663 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,468 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,745 |
| Geography of Scotland | 0 | - | 4.63 | 21,609 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,168 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 109,907 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,715 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,911 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,588 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,650 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,623 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,803 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,403 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,960 |
| Slavic Languages | 0 | - | 4.68 | 54,325 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,621 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,057 |
| France A-Z | 0 | - | 4.16 | 38,190 |
| French History Multiple Choice | 0 | - | 4.55 | 33,022 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,469 |
| Geography of Germany | 0 | - | 4.35 | 17,175 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,859 |
| Name that Greek Letter | 0 | - | 4.93 | 323,305 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,592 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,049 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,447 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,213 |
| Switzerland A-Z | 0 | - | 4.45 | 25,635 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,735 |
| Malta Country Quiz | 0 | - | 4.81 | 31,035 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,131 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,056 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,920 |
| Countries that Beat Canada | 0 | - | 4.90 | 94,307 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,989 |
| History of Russia Quiz | 0 | - | 4.47 | 31,905 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,713 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,657 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,215 |
| Movies Set in France | 0 | - | 4.26 | 13,118 |
| French Inventions | 0 | - | 4.08 | 13,894 |
| French Foods | 0 | - | 4.00 | 27,693 |
| History of Paris | 0 | - | 4.24 | 13,644 |
| The Trojan War | 0 | - | 4.83 | 39,691 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,730 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,804 |
| History of Italy | 0 | - | 4.55 | 31,960 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,728 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,097 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,485 |
| Roman Emperors | 0 | - | 4.95 | 119,874 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,643 |
| Famous Nordic People | 0 | - | 4.34 | 20,090 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,394 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,784 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,269 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,207 |
| Geography of Spain | 0 | - | 4.59 | 22,067 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,525 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,044 |
| People on Money - England | 0 | - | 4.29 | 16,608 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,923 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,821 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,959 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,143 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,757 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,765 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,481 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,196 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,255 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,323 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,334 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,650 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,546 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,872 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,248 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,747 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,447 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,408 |
| Capitals of French Regions | 0 | - | 4.45 | 16,057 |
| Kings of France Quiz | 0 | - | 4.20 | 32,707 |
| German Loan Words | 0 | - | 4.27 | 135,772 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,427 |
| Ancient Greek Words | 0 | - | 4.93 | 111,502 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,449 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,432 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,981 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,599 |
| Famous Scottish People | 0 | - | 4.22 | 18,392 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,498 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,536 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,241 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,630 |
