| European Countries by First 2 Letters | 0 | - | 4.95 | 532,542 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,029 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,937 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,836 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,991 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,733 |
| Official European Union Languages | 0 | - | 4.97 | 239,810 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,658 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,913 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,745 |
| Slavic Languages | 0 | - | 4.68 | 54,697 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,323 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,057 |
| History of Russia Quiz | 0 | - | 4.47 | 32,006 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,873 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,507 |
| Celtic Nations | 0 | - | 4.61 | 47,098 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,209 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,605 |
| European Geography By Letter - C | 0 | - | 4.43 | 124,037 |
| European Geography By Letter - D | 0 | - | 4.48 | 117,683 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,115 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,569 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,162 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,637 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,074 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,636 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,465 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,766 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,845 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,192 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,798 |
| Slavic Countries | 0 | - | 4.96 | 112,378 |
| Famous Germans | 0 | - | 4.50 | 55,795 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,696 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,451 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,385 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,764 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,830 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,772 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,506 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,478 |
| States of Germany | 0 | - | 4.95 | 154,521 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,698 |
| Regions of Italy | 0 | - | 4.92 | 77,087 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,808 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,325 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,769 |
| Champions League Winners | 0 | - | 4.92 | 1,016,250 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,031 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,753 |
| Geography of Russia | 0 | - | 4.57 | 21,600 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,374 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,843 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,257 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,530 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,243 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,004 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,607 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,243 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,614 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,612 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,919 |
| European Geography A-Z | 0 | - | 4.29 | 49,486 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,882 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,938 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,940 |
| Famous French People | 0 | - | 4.07 | 36,109 |
| Departments of France | 0 | - | 4.93 | 55,171 |
| The Mafia Quiz | 0 | - | 4.46 | 23,440 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,743 |
| History of The Netherlands | 0 | - | 4.46 | 17,556 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,115 |
| England or Wales? | 0 | - | 4.94 | 45,970 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,158 |
| Countries by Wikipedia Descriptions #1 | 0 | - | 4.93 | 65,572 |
| Countries by Wikipedia Descriptions #4 | 0 | - | 4.87 | 57,153 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,720 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,331 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,182 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,857 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,948 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,089 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,672 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,144 |
| France A-Z | 0 | - | 4.16 | 38,337 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,960 |
| Name that Greek Letter | 0 | - | 4.93 | 324,990 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,742 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,627 |
| Switzerland A-Z | 0 | - | 4.45 | 25,768 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,849 |
| Famous Russians | 0 | - | 4.16 | 23,912 |
| Word Chain - Russia | 0 | - | 4.33 | 15,798 |
| Russian History A-Z | 0 | - | 4.35 | 32,226 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,240 |
| The Trojan War | 0 | - | 4.83 | 39,992 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,965 |
| Famous Irish People | 0 | - | 4.05 | 46,064 |
| History of Italy | 0 | - | 4.55 | 32,148 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,380 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,594 |
| Roman Emperors | 0 | - | 4.95 | 121,211 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,824 |
| Famous Nordic People | 0 | - | 4.34 | 20,308 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,645 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,426 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,578 |
| People on Money - England | 0 | - | 4.29 | 16,645 |
| London A-Z | 0 | - | 4.10 | 40,879 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,999 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,710 |
| Africa A-Z | 0 | - | 4.57 | 46,771 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,381 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,526 |
| Europe Map Quiz | 0 | - | 5.00 | 4,788,522 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,532 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,186 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,463 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,432 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,546 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,743 |
| Capitals of French Regions | 0 | - | 4.45 | 16,184 |
| Regions of France | 0 | - | 4.70 | 122,103 |
| France Immigration by Country | 0 | - | 4.70 | 76,937 |
| German Groups of Things | 0 | - | 4.47 | 38,637 |
| Capitals of German States | 0 | - | 4.74 | 29,072 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,543 |
| Germany True or False? | 0 | - | 4.61 | 49,022 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,473 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,786 |
| Ancient Greek Words | 0 | - | 4.93 | 112,473 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,775 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,408 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,831 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,335 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,810 |
| Famous Scottish People | 0 | - | 4.22 | 18,439 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,471 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,082 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,672 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,214 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,668 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,322 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,315 |
| Middle East A-Z | 0 | - | 4.47 | 46,240 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,325,840 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,456 |
| Australian Capitals | 0 | - | 4.92 | 62,834 |
| Canada A-Z | 0 | - | 4.73 | 32,970 |
| European Physical Geography | 0 | - | 4.26 | 33,596 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,131 |
| History of Austria | 0 | - | 4.70 | 17,974 |
| Geography of the French Empire | 0 | - | 4.45 | 27,218 |
| The French Revolution | 0 | - | 4.47 | 24,148 |
| France Multiple Choice | 0 | - | 4.39 | 40,849 |
| History of France | 0 | - | 4.61 | 57,623 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,560 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,843 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,504 |
| The Vikings! | 0 | - | 4.46 | 28,407 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,390 |
| The Portuguese Empire | 0 | - | 4.58 | 12,106 |
| American to British Word Translation | 0 | - | 4.14 | 139,704 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,061 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,815 |
| Champions League Top 4 | 0 | - | 4.78 | 139,101 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,569 |
| Asia Map Quiz | 0 | - | 4.99 | 925,273 |
| A Quiz About Islam | 0 | - | 4.32 | 48,619 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,183 |
| Africa Map Quiz | 0 | - | 5.00 | 2,128,813 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,532 |
| Countries by Wikipedia Descriptions #2 | 0 | - | 4.43 | 47,713 |
| Countries by Wikipedia Descriptions #3 | 0 | - | 4.55 | 39,488 |
| Countries by Wikipedia Descriptions #5 | 0 | - | 4.77 | 43,167 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,469 |
| Australia Map Quiz | 0 | - | 4.95 | 346,179 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 69,984 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 56,892 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,630 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,453 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,825 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,966 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,923 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,823 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,255 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,898 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,146 |
| Country Codes of Europe | 0 | - | 3.45 | 13,833 |
| The Only European Country ... | 0 | - | 4.91 | 219,045 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,536 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,363 |
| Austria... or Australia? | 0 | - | 4.67 | 104,772 |
| Presidents of France | 0 | - | 4.25 | 24,339 |
| Word Chain - France | 0 | - | 4.38 | 42,939 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,241 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,047 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,864 |
| Italian Foods | 0 | - | 4.30 | 73,283 |
