| Netherlands Immigration by Country | 0 | - | 4.94 | 43,889 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,595 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,801 |
| States of Germany | 0 | - | 4.96 | 150,268 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,097 |
| Regions of Italy | 0 | - | 4.92 | 74,820 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,463 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,288 |
| Departments of France | 0 | - | 4.93 | 52,919 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,385 |
| England or Wales? | 0 | - | 4.94 | 45,363 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,634 |
| Official European Union Languages | 0 | - | 4.97 | 237,053 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,769 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,492 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,569 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,585 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,494 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,251 |
| Celtic Nations | 0 | - | 4.69 | 46,826 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,910 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,020 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,153 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,967 |
| Regions of France | 0 | - | 4.78 | 119,380 |
| France Immigration by Country | 0 | - | 4.72 | 76,007 |
| Famous Germans | 0 | - | 4.50 | 54,659 |
| German Groups of Things | 0 | - | 4.46 | 38,315 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,062 |
| Germany True or False? | 0 | - | 4.61 | 48,551 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,517 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,598 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,861 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,075 |
| Counties of England | 0 | - | 4.97 | 789,818 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,044 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,423 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,433 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,404 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,294 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,348 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,897 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,220 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,300 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,814 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,363 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,092 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,213 |
| Champions League Winners | 0 | - | 4.92 | 997,251 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,184 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,569 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,511 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,725 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,266 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,550 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,742 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,414 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,321 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,322 |
| Word Chain - France | 0 | - | 4.38 | 42,595 |
| Germany Country Quiz | 0 | - | 4.82 | 156,690 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,250 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,799 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,780 |
| Italy Country Quiz | 0 | - | 4.82 | 122,317 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,509 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,172 |
| Italian Foods | 0 | - | 4.31 | 72,243 |
| The Mafia Quiz | 0 | - | 4.46 | 23,212 |
| History of The Netherlands | 0 | - | 4.46 | 17,325 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,147 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,729 |
| Canary Islands | 0 | - | 4.61 | 17,411 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,038 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,198 |
| British Spellings | 0 | - | 4.07 | 99,263 |
| British Groups of Things | 0 | - | 4.25 | 82,707 |
| British Acronyms | 0 | - | 4.39 | 45,636 |
| UK Immigration by Country | 0 | - | 4.94 | 139,767 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,957 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,340 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,427 |
| Geography of Scotland | 0 | - | 4.63 | 21,495 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,638 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,460 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,608 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,038 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,206 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,881 |
| Slavic Languages | 0 | - | 4.67 | 54,021 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,537 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,430 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,559 |
| France A-Z | 0 | - | 4.16 | 38,069 |
| French History Multiple Choice | 0 | - | 4.55 | 32,889 |
| History of Germany | 0 | - | 4.39 | 52,635 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,462 |
| Name that Greek Letter | 0 | - | 4.94 | 321,816 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,443 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,433 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,266 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,481 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,580 |
| Switzerland A-Z | 0 | - | 4.45 | 25,518 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,463 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,926 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,474 |
| Malta Country Quiz | 0 | - | 4.81 | 30,859 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,662 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,215 |
| History of Russia Quiz | 0 | - | 4.49 | 31,801 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,588 |
| Famous French People | 0 | - | 4.12 | 27,987 |
| Movies Set in France | 0 | - | 4.26 | 13,080 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,648 |
| History of Paris | 0 | - | 4.24 | 13,619 |
| Word Chain - Germany | 0 | - | 4.31 | 22,482 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,516 |
| The Trojan War | 0 | - | 4.83 | 39,463 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,680 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,449 |
| History of Italy | 0 | - | 4.55 | 31,838 |
| Word Chain - Italy | 0 | - | 4.07 | 23,097 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,221 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,048 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,104 |
| Roman Emperors | 0 | - | 4.95 | 118,599 |
| Famous Nordic People | 0 | - | 4.34 | 19,878 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,548 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,995 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,244 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,475 |
| People on Money - England | 0 | - | 4.29 | 16,570 |
| Name a Valid English City | 0 | - | 4.19 | 16,637 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,360 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,236 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,451 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,953 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,904 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,757 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,267 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,988 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,717 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,669 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,051 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,358 |
| Europe Map Quiz | 0 | - | 5.00 | 4,733,867 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,014 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,647 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,969 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,008 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,631 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,188 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,647 |
| Capitals of French Regions | 0 | - | 4.45 | 15,991 |
| Kings of France Quiz | 0 | - | 4.20 | 32,572 |
| Capitals of German States | 0 | - | 4.74 | 28,818 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,111 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,745 |
| Ancient Greek Words | 0 | - | 4.92 | 110,780 |
| British to American Food Translation | 0 | - | 3.38 | 51,861 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,288 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,265 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,429 |
| Famous Scottish People | 0 | - | 4.22 | 18,335 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,444 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,893 |
| Australian Capitals | 0 | - | 4.92 | 62,598 |
| European Physical Geography | 0 | - | 4.26 | 33,381 |
| Geography of Russia | 0 | - | 4.57 | 21,435 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,797 |
| History of Austria | 0 | - | 4.70 | 17,765 |
| Austria Country Quiz | 0 | - | 4.57 | 59,387 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,295 |
| France Country Quiz | 0 | - | 4.70 | 133,931 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,935 |
| Geography of the French Empire | 0 | - | 4.48 | 26,944 |
| The French Revolution | 0 | - | 4.46 | 23,799 |
| France Multiple Choice | 0 | - | 4.38 | 40,645 |
| Tour de France Winners | 0 | - | 4.27 | 15,235 |
| History of France | 0 | - | 4.59 | 56,164 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,391 |
| Greece Country Quiz | 0 | - | 4.74 | 65,800 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,863 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,656 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,270 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,020 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,798 |
| The Vikings! | 0 | - | 4.46 | 28,251 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,404 |
| The Portuguese Empire | 0 | - | 4.54 | 11,997 |
| Spain Country Quiz | 0 | - | 4.45 | 127,700 |
| Switzerland Country Quiz | 0 | - | 4.51 | 62,975 |
| American to British Word Translation | 0 | - | 4.10 | 134,405 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,733 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,575 |
| Biggest British Empire Countries | 0 | - | 4.77 | 97,984 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,073 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,207 |
