| States of Germany | 0 | - | 4.96 | 149,882 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,953 |
| German Groups of Things | 0 | - | 4.46 | 38,294 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,135 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,029 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,421 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,173 |
| Word Chain - France | 0 | - | 4.38 | 42,570 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,497 |
| Regions of Italy | 0 | - | 4.92 | 74,623 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,760 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,193 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,073 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,322 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,041 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,992 |
| Departments of France | 0 | - | 4.93 | 52,715 |
| Famous Germans | 0 | - | 4.50 | 54,579 |
| Germany True or False? | 0 | - | 4.61 | 48,513 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,348 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,892 |
| England or Wales? | 0 | - | 4.94 | 45,289 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,542 |
| Official European Union Languages | 0 | - | 4.97 | 236,409 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,629 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,959 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,499 |
| Word Chain - Italy | 0 | - | 4.07 | 23,083 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,233 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,498 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,560 |
| Italian Foods | 0 | - | 4.30 | 72,136 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,542 |
| British Groups of Things | 0 | - | 4.25 | 82,659 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,942 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,228 |
| Celtic Nations | 0 | - | 4.69 | 46,800 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,971 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,596 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,978 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,920 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,962 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,808 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,645 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,664 |
| Regions of France | 0 | - | 4.78 | 119,103 |
| France Immigration by Country | 0 | - | 4.72 | 75,932 |
| Capitals of German States | 0 | - | 4.74 | 28,799 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,084 |
| History of Germany | 0 | - | 4.39 | 52,596 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,423 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,279 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,743 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,464 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,031 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,426 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,905 |
| Counties of England | 0 | - | 4.97 | 788,627 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,376 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,421 |
| Capital Cities Chain | 0 | - | 4.84 | 81,852 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,987 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,285 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,283 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,149 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,158 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,690 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,741 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,039 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,598 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,994 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,863 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,999 |
| Name a Valid English City | 0 | - | 4.19 | 16,624 |
| Champions League Winners | 0 | - | 4.92 | 995,515 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,278 |
| Word Chain - Australia | 0 | - | 4.37 | 38,008 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,111 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,374 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,666 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,181 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,397 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,015 |
| Name a Valid African Country | 0 | - | 4.98 | 152,852 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,076 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,381 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,445 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,103 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,102 |
| Germany Country Quiz | 0 | - | 4.82 | 156,447 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,078 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,750 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,761 |
| Italy Country Quiz | 0 | - | 4.82 | 122,117 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,291 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,010 |
| The Mafia Quiz | 0 | - | 4.46 | 23,195 |
| History of The Netherlands | 0 | - | 4.46 | 17,302 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,901 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,552 |
| Canary Islands | 0 | - | 4.61 | 17,390 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,700 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,107 |
| British Spellings | 0 | - | 4.07 | 99,194 |
| British to American Food Translation | 0 | - | 3.38 | 51,806 |
| British Acronyms | 0 | - | 4.39 | 45,606 |
| UK Immigration by Country | 0 | - | 4.94 | 139,521 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,031 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,164 |
| Geography of Scotland | 0 | - | 4.63 | 21,468 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,357 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,613 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,479 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,979 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,428 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,936 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,883 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,763 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,901 |
| Slavic Languages | 0 | - | 4.67 | 53,946 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,363 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,550 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,957 |
| France A-Z | 0 | - | 4.16 | 38,044 |
| French History Multiple Choice | 0 | - | 4.55 | 32,860 |
| Geography of Germany | 0 | - | 4.35 | 17,079 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,439 |
| Name that Greek Letter | 0 | - | 4.94 | 321,488 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,419 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,313 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,232 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,435 |
| Switzerland A-Z | 0 | - | 4.45 | 25,496 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,420 |
| Malta Country Quiz | 0 | - | 4.81 | 30,800 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,857 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,391 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,444 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,808 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,048 |
| History of Russia Quiz | 0 | - | 4.49 | 31,781 |
| Word Chain - Russia | 0 | - | 4.33 | 15,684 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,552 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,819 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,084 |
| Famous French People | 0 | - | 4.12 | 27,901 |
| Movies Set in France | 0 | - | 4.26 | 13,068 |
| French Inventions | 0 | - | 4.08 | 13,862 |
| French Foods | 0 | - | 4.00 | 27,584 |
| History of Paris | 0 | - | 4.24 | 13,612 |
| The Trojan War | 0 | - | 4.83 | 39,403 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,423 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,140 |
| History of Italy | 0 | - | 4.55 | 31,805 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,114 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,034 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,004 |
| Roman Emperors | 0 | - | 4.95 | 118,355 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,470 |
| Famous Nordic People | 0 | - | 4.34 | 19,830 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,278 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,303 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,617 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,540 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,966 |
| Geography of Spain | 0 | - | 4.59 | 21,945 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,454 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,783 |
| People on Money - England | 0 | - | 4.29 | 16,560 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,298 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,997 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,138 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,793 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,843 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,333 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,840 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,775 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,647 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,169 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,807 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,631 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,594 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,997 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,258 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,734 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,563 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,106 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,585 |
| Capitals of French Regions | 0 | - | 4.45 | 15,980 |
| Kings of France Quiz | 0 | - | 4.20 | 32,545 |
| German Loan Words | 0 | - | 4.27 | 135,435 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,302 |
| Ancient Greek Words | 0 | - | 4.92 | 110,606 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,415 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,253 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,916 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,241 |
| Famous Scottish People | 0 | - | 4.22 | 18,321 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,310 |
