| Netherlands Immigration by Country | 0 | - | 4.93 | 51,835 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,640 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,237 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,917 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,079 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,683 |
| States of Germany | 0 | - | 4.96 | 151,862 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,869 |
| Regions of Italy | 0 | - | 4.92 | 75,530 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,610 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,989 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,044 |
| Departments of France | 0 | - | 4.93 | 53,766 |
| Famous Germans | 0 | - | 4.50 | 55,160 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,270 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,514 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,219 |
| England or Wales? | 0 | - | 4.94 | 45,593 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,989 |
| Official European Union Languages | 0 | - | 4.97 | 238,097 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,596 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,456 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,558 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,553 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,875 |
| Famous French People | 0 | - | 4.06 | 34,757 |
| The Mafia Quiz | 0 | - | 4.46 | 23,296 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,750 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,660 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,610 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,356 |
| Celtic Nations | 0 | - | 4.69 | 46,908 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,919 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,587 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,329 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,064 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,129 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,125 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,217 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,553 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,237 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,793 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,122 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,359 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,950 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,549 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,617 |
| Regions of France | 0 | - | 4.75 | 120,387 |
| France A-Z | 0 | - | 4.16 | 38,167 |
| France Immigration by Country | 0 | - | 4.70 | 76,395 |
| German Groups of Things | 0 | - | 4.46 | 38,431 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,281 |
| Germany True or False? | 0 | - | 4.61 | 48,736 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,870 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,861 |
| Switzerland A-Z | 0 | - | 4.45 | 25,620 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,233 |
| Counties of England | 0 | - | 4.97 | 794,658 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,061 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,582 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,128 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,150 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,885 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,342 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,122 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,532 |
| Famous Nordic People | 0 | - | 4.34 | 20,063 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,610 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,999 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,542 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,006 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,517 |
| People on Money - England | 0 | - | 4.29 | 16,600 |
| Champions League Winners | 0 | - | 4.92 | 1,003,609 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,398 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,387 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,376 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,037 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,658 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,232 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,557 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,739 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,392 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,233 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,893 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,497 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,740 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,004 |
| European Geography A-Z | 0 | - | 4.29 | 49,191 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,560 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,261 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,644 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,423 |
| Word Chain - France | 0 | - | 4.38 | 42,736 |
| Germany Country Quiz | 0 | - | 4.82 | 157,557 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,857 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,934 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,875 |
| Italy Country Quiz | 0 | - | 4.82 | 123,171 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,108 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,803 |
| Italian Foods | 0 | - | 4.30 | 72,627 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,650 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,357 |
| Canary Islands | 0 | - | 4.62 | 17,459 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,691 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,590 |
| British Spellings | 0 | - | 4.06 | 99,401 |
| British Groups of Things | 0 | - | 4.25 | 82,830 |
| British Acronyms | 0 | - | 4.39 | 45,755 |
| UK Immigration by Country | 0 | - | 4.94 | 140,654 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,016 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,426 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,204 |
| Geography of Scotland | 0 | - | 4.63 | 21,590 |
| Famous Scottish People | 0 | - | 4.22 | 18,387 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,716 |
| Countries by Wikipedia Descriptions #1 | 0 | - | 4.93 | 65,268 |
| Countries by Wikipedia Descriptions #4 | 0 | - | 4.87 | 56,880 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,642 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,478 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,344 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,415 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,340 |
| Slavic Languages | 0 | - | 4.68 | 54,265 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,712 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,612 |
| French History Multiple Choice | 0 | - | 4.55 | 32,999 |
| History of Germany | 0 | - | 4.39 | 52,777 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,017 |
| Name that Greek Letter | 0 | - | 4.93 | 323,070 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,575 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,418 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,582 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,083 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,631 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,997 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,687 |
| Malta Country Quiz | 0 | - | 4.81 | 30,999 |
| Africa A-Z | 0 | - | 4.57 | 46,565 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,846 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,837 |
| Famous Russians | 0 | - | 4.16 | 23,815 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,692 |
| Movies Set in France | 0 | - | 4.26 | 13,113 |
| French Inventions | 0 | - | 4.08 | 13,890 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,048 |
| History of Paris | 0 | - | 4.24 | 13,637 |
| Word Chain - Germany | 0 | - | 4.31 | 22,562 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,899 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,114 |
| The Trojan War | 0 | - | 4.83 | 39,642 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,523 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,501 |
| Famous Irish People | 0 | - | 4.05 | 45,975 |
| History of Italy | 0 | - | 4.55 | 31,935 |
| Word Chain - Italy | 0 | - | 4.07 | 23,148 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,628 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,086 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,410 |
| Roman Emperors | 0 | - | 4.95 | 119,643 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,159 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,327 |
| Name a Valid English City | 0 | - | 4.19 | 16,699 |
| London A-Z | 0 | - | 4.10 | 40,744 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,405 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,650 |
| NBA Players by Wikipedia Descriptions | 0 | - | 4.43 | 40,273 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,072 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,043 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,203 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,861 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,151 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,177 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,356 |
| Capitals of French Regions | 0 | - | 4.45 | 16,035 |
| Kings of France Quiz | 0 | - | 4.20 | 32,682 |
| Capitals of German States | 0 | - | 4.74 | 28,927 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,277 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,501 |
| Ancient Greek Words | 0 | - | 4.93 | 111,336 |
| British to American Food Translation | 0 | - | 3.38 | 51,943 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,407 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,615 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,445 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,059 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,614 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,353 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,814 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,296 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,935 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,743 |
| Middle East A-Z | 0 | - | 4.47 | 45,973 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,313,660 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,469 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,484 |
| Australian Capitals | 0 | - | 4.92 | 62,694 |
| Canada A-Z | 0 | - | 4.73 | 32,772 |
