| European Countries by First 2 Letters | 0 | - | 4.95 | 530,734 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,762 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,351 |
| Official European Union Languages | 0 | - | 4.97 | 238,973 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,164 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,176 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,122 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,921 |
| Celtic Nations | 0 | - | 4.69 | 47,003 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,435 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,552 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,488 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,357 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,490 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,214 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,360 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,592 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,760 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,978 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,420 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,078 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,358 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,094 |
| States of Germany | 0 | - | 4.95 | 153,301 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,308 |
| Regions of Italy | 0 | - | 4.92 | 76,304 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,460 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,467 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,431 |
| Champions League Winners | 0 | - | 4.92 | 1,010,198 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,654 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,913 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,695 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,006 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,435 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,706 |
| Slavic Languages | 0 | - | 4.68 | 54,482 |
| Departments of France | 0 | - | 4.93 | 54,512 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,666 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,621 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,517 |
| England or Wales? | 0 | - | 4.94 | 45,812 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,075 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,748 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,643 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,380 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,658 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,783 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,870 |
| History of Italy | 0 | - | 4.55 | 32,062 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,985 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,725 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,303 |
| Australian Capitals | 0 | - | 4.92 | 62,760 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,460 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,560 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,384 |
| Capitals of German States | 0 | - | 4.74 | 28,990 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,406 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,217 |
| The Trojan War | 0 | - | 4.83 | 39,808 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,078 |
| Name that Greek Letter | 0 | - | 4.93 | 324,224 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,291 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,664 |
| Roman Emperors | 0 | - | 4.95 | 120,441 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,497 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,447 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,021 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,414 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,815 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,365 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,036 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,360 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,229 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,039 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,304 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,868 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,363 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,023 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,316 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,304 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,908 |
| Country Codes of Europe | 0 | - | 3.43 | 13,757 |
| Regions of France | 0 | - | 4.70 | 121,301 |
| France Immigration by Country | 0 | - | 4.70 | 76,696 |
| Famous Germans | 0 | - | 4.50 | 55,544 |
| German Groups of Things | 0 | - | 4.46 | 38,530 |
| Germany True or False? | 0 | - | 4.61 | 48,899 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,155 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,847 |
| Italy True or False? | 0 | - | 4.42 | 47,493 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,511 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,346 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,466 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,698 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,846 |
| Asia Map Quiz | 0 | - | 4.99 | 920,005 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,294 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,069 |
| European Physical Geography | 0 | - | 4.26 | 33,542 |
| Geography of Russia | 0 | - | 4.57 | 21,556 |
| History of Austria | 0 | - | 4.70 | 17,912 |
| Geography of the French Empire | 0 | - | 4.45 | 27,157 |
| The French Revolution | 0 | - | 4.47 | 24,070 |
| France Multiple Choice | 0 | - | 4.39 | 40,774 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,022 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,562 |
| The Vikings! | 0 | - | 4.46 | 28,372 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| American to British Word Translation | 0 | - | 4.14 | 139,342 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,958 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,979 |
| Australia Map Quiz | 0 | - | 4.95 | 345,259 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,869 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,746 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,647 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,125 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,747 |
| The Only European Country ... | 0 | - | 4.91 | 217,492 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,636 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,313 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,023 |
| Presidents of France | 0 | - | 4.25 | 24,219 |
| History of France | 0 | - | 4.61 | 57,298 |
| Ancient Greek Words | 0 | - | 4.93 | 111,937 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,047 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,221 |
| Sweden True or False? | 0 | - | 4.53 | 40,392 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,069 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,173 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,728 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,150 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,141 |
| Champions League Top 4 | 0 | - | 4.77 | 137,378 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,356 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,030 |
| Countries of Africa | 0 | - | 5.00 | 2,546,026 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,141 |
| African East Coast | 0 | - | 4.96 | 96,315 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,177 |
| Australian States and Territories | 0 | - | 4.96 | 142,269 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,372 |
| Australia True or False | 0 | - | 4.87 | 56,962 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,727 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,425 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,145 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,646 |
| North America Map Quiz | 0 | - | 4.98 | 249,579 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,813 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,016 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,324 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,974 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,599 |
| Sahel Countries on a Map | 0 | - | 4.99 | 21,357 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,290 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,635 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,486 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,173 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,916 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,551 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,032 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,163 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,754 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,462 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,961 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,470 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,478 |
| European Geography A-Z | 0 | - | 4.29 | 49,370 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,381 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,692 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,609 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,442 |
| Slavic Countries | 0 | - | 4.96 | 111,922 |
| Austria... or Australia? | 0 | - | 4.68 | 104,517 |
| Famous French People | 0 | - | 4.07 | 35,874 |
| Word Chain - France | 0 | - | 4.38 | 42,852 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,512 |
| Geography of Germany | 0 | - | 4.35 | 17,211 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,086 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,951 |
| Italian Foods | 0 | - | 4.30 | 72,960 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,432 |
| The Mafia Quiz | 0 | - | 4.46 | 23,375 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,161 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,290 |
| History of The Netherlands | 0 | - | 4.46 | 17,489 |
| History of Spain | 0 | - | 4.23 | 21,121 |
| Languages of Spain | 0 | - | 4.36 | 23,354 |
| Canary Islands | 0 | - | 4.62 | 17,495 |
| Spain True or False? | 0 | - | 4.58 | 30,687 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,837 |
| British to American Word Translation | 0 | - | 3.74 | 255,180 |
| British Foods by Description | 0 | - | 3.94 | 48,346 |
| British Spellings | 0 | - | 4.06 | 99,515 |
| British Groups of Things | 0 | - | 4.25 | 82,916 |
| British and American Word Differences | 0 | - | 2.63 | 46,900 |
