| European Countries by First 2 Letters | 0 | - | 4.95 | 529,470 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,362 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,496 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,961 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,113 |
| Official European Union Languages | 0 | - | 4.97 | 238,484 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,828 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,152 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,597 |
| Slavic Languages | 0 | - | 4.68 | 54,354 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,979 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,830 |
| History of Russia Quiz | 0 | - | 4.47 | 31,914 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,723 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,384 |
| Celtic Nations | 0 | - | 4.69 | 46,941 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,191 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 118,563 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,916 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,573 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,482 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,606 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,517 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,822 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,678 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,991 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,410 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,580 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,457 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,790 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,265 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,176 |
| Slavic Countries | 0 | - | 4.96 | 111,643 |
| Famous Germans | 0 | - | 4.50 | 55,287 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,346 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,999 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,483 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,878 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,439 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,119 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,107 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,889 |
| States of Germany | 0 | - | 4.96 | 152,529 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,022 |
| Regions of Italy | 0 | - | 4.92 | 75,851 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,140 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,924 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,186 |
| Champions League Winners | 0 | - | 4.92 | 1,006,550 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,501 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,488 |
| Geography of Russia | 0 | - | 4.57 | 21,526 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,031 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,693 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,582 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,896 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,029 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,696 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,513 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,148 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,723 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,913 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,175 |
| European Geography A-Z | 0 | - | 4.29 | 49,263 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,218 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,788 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,099 |
| Famous French People | 0 | - | 4.06 | 35,558 |
| Departments of France | 0 | - | 4.93 | 54,087 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,544 |
| History of The Netherlands | 0 | - | 4.46 | 17,431 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,777 |
| England or Wales? | 0 | - | 4.94 | 45,683 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,320 |
| Countries by Wikipedia Descriptions #1 | 0 | - | 4.93 | 65,340 |
| Countries by Wikipedia Descriptions #4 | 0 | - | 4.87 | 56,952 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,654 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,688 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,938 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,503 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,435 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,765 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,625 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,059 |
| France A-Z | 0 | - | 4.16 | 38,202 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,318 |
| Name that Greek Letter | 0 | - | 4.93 | 323,410 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,608 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,461 |
| Switzerland A-Z | 0 | - | 4.45 | 25,644 |
| Africa A-Z | 0 | - | 4.57 | 46,603 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,190 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,069 |
| Famous Russians | 0 | - | 4.16 | 23,839 |
| Word Chain - Russia | 0 | - | 4.33 | 15,750 |
| Russian History A-Z | 0 | - | 4.38 | 31,705 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,138 |
| The Trojan War | 0 | - | 4.83 | 39,721 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,824 |
| Famous Irish People | 0 | - | 4.05 | 45,994 |
| History of Italy | 0 | - | 4.55 | 31,970 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,775 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,521 |
| Roman Emperors | 0 | - | 4.95 | 120,015 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,656 |
| Famous Nordic People | 0 | - | 4.34 | 20,111 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,614 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,232 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,529 |
| People on Money - England | 0 | - | 4.29 | 16,610 |
| London A-Z | 0 | - | 4.10 | 40,769 |
| Asian Cities A-Z by Clue | 0 | - | 4.49 | 35,555 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,121 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,184 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,429 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,271 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,935 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,219 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,228 |
| Capitals of French Regions | 0 | - | 4.45 | 16,066 |
| Regions of France | 0 | - | 4.72 | 120,756 |
| France Immigration by Country | 0 | - | 4.70 | 76,505 |
| German Groups of Things | 0 | - | 4.46 | 38,473 |
| Capitals of German States | 0 | - | 4.74 | 28,953 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,330 |
| Germany True or False? | 0 | - | 4.61 | 48,797 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,005 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,745 |
| Ancient Greek Words | 0 | - | 4.93 | 111,583 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,351 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,264 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,234 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,201 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,693 |
| Famous Scottish People | 0 | - | 4.22 | 18,393 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,134 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,693 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,408 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,894 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,365 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,025 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,872 |
| Middle East A-Z | 0 | - | 4.47 | 46,015 |
| 100 Most Common English Words | 0 | - | 4.89 | 1,316,490 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,674 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,179 |
| Australian Capitals | 0 | - | 4.92 | 62,720 |
| Canada A-Z | 0 | - | 4.73 | 32,833 |
| European Physical Geography | 0 | - | 4.26 | 33,508 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,956 |
| History of Austria | 0 | - | 4.70 | 17,861 |
| Geography of the French Empire | 0 | - | 4.45 | 27,057 |
| The French Revolution | 0 | - | 4.46 | 23,929 |
| France Multiple Choice | 0 | - | 4.39 | 40,741 |
| History of France | 0 | - | 4.59 | 56,967 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,047 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,126 |
| The Vikings! | 0 | - | 4.46 | 28,342 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,123 |
| The Portuguese Empire | 0 | - | 4.58 | 12,064 |
| American to British Word Translation | 0 | - | 4.14 | 139,038 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,891 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,660 |
| Champions League Top 4 | 0 | - | 4.77 | 136,393 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,170 |
| Asia Map Quiz | 0 | - | 4.99 | 916,618 |
| A Quiz About Islam | 0 | - | 4.31 | 48,434 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,843 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,181 |
| Countries by Wikipedia Descriptions #2 | 0 | - | 4.43 | 47,559 |
| Countries by Wikipedia Descriptions #3 | 0 | - | 4.55 | 39,362 |
| Countries by Wikipedia Descriptions #5 | 0 | - | 4.77 | 43,045 |
| Countries of Africa | 0 | - | 5.00 | 2,536,434 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,813 |
| African East Coast | 0 | - | 4.96 | 96,047 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,866 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,678 |
| Australia Map Quiz | 0 | - | 4.95 | 344,585 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,410 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,860 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,462 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,168 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,075 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,217 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,648 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,995 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,426 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,668 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,218 |
| Country Codes of Europe | 0 | - | 3.43 | 13,716 |
| The Only European Country ... | 0 | - | 4.91 | 216,579 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,098 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,302 |
| Austria... or Australia? | 0 | - | 4.68 | 104,337 |
| Presidents of France | 0 | - | 4.25 | 24,132 |
| Word Chain - France | 0 | - | 4.38 | 42,777 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,993 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,911 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,920 |
| Italian Foods | 0 | - | 4.30 | 72,775 |
