| European Countries by First 2 Letters | 0 | - | 4.95 | 530,260 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,490 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,308 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 79,592 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,203 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,274 |
| Official European Union Languages | 0 | - | 4.97 | 238,810 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,055 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,752 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,629 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,074 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,893 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,413 |
| Celtic Nations | 0 | - | 4.69 | 46,976 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,035 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,593 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,429 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,149 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,584 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,548 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,995 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,245 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,857 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,683 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,921 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,690 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,991 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,830 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,124 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,599 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,723 |
| Famous Germans | 0 | - | 4.50 | 55,475 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,696 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,669 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,314 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,552 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,822 |
| States of Germany | 0 | - | 4.95 | 152,987 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,214 |
| Regions of Italy | 0 | - | 4.92 | 76,150 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,356 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,242 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,342 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,732 |
| Champions League Winners | 0 | - | 4.91 | 1,008,987 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,612 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,120 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,942 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,326 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,198 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,888 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,667 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,307 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,845 |
| European Geography by Letter - W | 0 | - | 4.20 | 83,016 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,291 |
| European Geography A-Z | 0 | - | 4.29 | 49,346 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,669 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,822 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,433 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,736 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,220 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,473 |
| Slavic Languages | 0 | - | 4.68 | 54,437 |
| Famous French People | 0 | - | 4.07 | 35,782 |
| Departments of France | 0 | - | 4.93 | 54,364 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,643 |
| The Mafia Quiz | 0 | - | 4.46 | 23,359 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,598 |
| History of The Netherlands | 0 | - | 4.46 | 17,468 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,506 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,906 |
| England or Wales? | 0 | - | 4.94 | 45,767 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,839 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,497 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,581 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,834 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,528 |
| Africa A-Z | 0 | - | 4.57 | 46,655 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,264 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,619 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,767 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,635 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,080 |
| France A-Z | 0 | - | 4.16 | 38,245 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,463 |
| Name that Greek Letter | 0 | - | 4.93 | 324,073 |
| History of Italy | 0 | - | 4.55 | 32,037 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,910 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,708 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,286 |
| Switzerland A-Z | 0 | - | 4.45 | 25,675 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 41,467 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,318,933 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,633 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,525 |
| Famous Russians | 0 | - | 4.16 | 23,856 |
| Russian History A-Z | 0 | - | 4.35 | 31,819 |
| Capitals of French Regions | 0 | - | 4.45 | 16,096 |
| Capitals of German States | 0 | - | 4.74 | 28,979 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,380 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,161 |
| The Trojan War | 0 | - | 4.83 | 39,778 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,094 |
| Famous Irish People | 0 | - | 4.05 | 46,016 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,620 |
| Roman Emperors | 0 | - | 4.95 | 120,299 |
| Famous Nordic People | 0 | - | 4.34 | 20,157 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,620 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,539 |
| People on Money - England | 0 | - | 4.29 | 16,621 |
| London A-Z | 0 | - | 4.10 | 40,802 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,734 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,450 |
| Australian Capitals | 0 | - | 4.92 | 62,739 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,265 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,330 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,995 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,279 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,278 |
| Regions of France | 0 | - | 4.72 | 121,104 |
| France Immigration by Country | 0 | - | 4.70 | 76,640 |
| German Groups of Things | 0 | - | 4.46 | 38,505 |
| Germany True or False? | 0 | - | 4.61 | 48,861 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,115 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,598 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,464 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,321 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,381 |
| Famous Scottish People | 0 | - | 4.22 | 18,409 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,210 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,786 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,467 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,971 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,419 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,314 |
| Asia Map Quiz | 0 | - | 4.99 | 918,702 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,099 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,975 |
| Middle East A-Z | 0 | - | 4.47 | 46,115 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,514 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,028 |
| African East Coast | 0 | - | 4.96 | 96,204 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,075 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,839 |
| Canada A-Z | 0 | - | 4.73 | 32,878 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,659 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,717 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,410 |
| European Physical Geography | 0 | - | 4.26 | 33,533 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,570 |
| Country Codes of Europe | 0 | - | 3.43 | 13,741 |
| The Only European Country ... | 0 | - | 4.91 | 217,198 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,454 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,255 |
| Geography of Russia | 0 | - | 4.57 | 21,550 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,993 |
| History of Austria | 0 | - | 4.70 | 17,891 |
| Presidents of France | 0 | - | 4.25 | 24,189 |
| Geography of the French Empire | 0 | - | 4.45 | 27,147 |
| The French Revolution | 0 | - | 4.47 | 24,044 |
| France Multiple Choice | 0 | - | 4.39 | 40,758 |
| History of France | 0 | - | 4.59 | 57,213 |
| Ancient Greek Words | 0 | - | 4.93 | 111,829 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,235 |
| The Vikings! | 0 | - | 4.46 | 28,365 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,190 |
| The Portuguese Empire | 0 | - | 4.58 | 12,080 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,062 |
| American to British Word Translation | 0 | - | 4.14 | 139,243 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,932 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,699 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,773 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,957 |
| Champions League Top 4 | 0 | - | 4.77 | 137,071 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,176 |
| A Quiz About Islam | 0 | - | 4.31 | 48,482 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,917 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,112 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,138 |
| Countries with NO Military | 0 | - | 4.97 | 62,560 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 91,921 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 148,851 |
| Countries with the Densest Road Networks | 0 | - | 4.33 | 17,831 |
| Countries by Lamborghini Dealerships | 0 | - | 4.35 | 51,962 |
| Monarchies of the World | 0 | - | 4.94 | 169,097 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,973 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,473 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 114,662 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 75,291 |
| People on Money by Country | 0 | - | 4.83 | 60,485 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,753 |
| NATO Countries | 0 | - | 4.98 | 281,309 |
| EU Countries Quiz | 0 | - | 4.99 | 275,236 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,093 |
| Books of the Protestant Bible | 0 | - | 4.84 | 210,583 |
| Astronomy Quiz | 0 | - | 4.90 | 82,766 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,868 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,505 |
