| European Countries by First 2 Letters | 0 | - | 4.95 | 527,909 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,873 |
| Official European Union Languages | 0 | - | 4.97 | 237,716 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,356 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,666 |
| Celtic Nations | 0 | - | 4.69 | 46,878 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,767 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,676 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,321 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,128 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,422 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,610 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,208 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,774 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,302 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,734 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,624 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,456 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,638 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,637 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,720 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,384 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,435 |
| States of Germany | 0 | - | 4.96 | 151,181 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,601 |
| Regions of Italy | 0 | - | 4.92 | 75,251 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 49,946 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,236 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,764 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,231 |
| Champions League Winners | 0 | - | 4.92 | 1,001,083 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,515 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,628 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,317 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,917 |
| Slavic Languages | 0 | - | 4.68 | 54,168 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,530 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,366 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,907 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,793 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,166 |
| Departments of France | 0 | - | 4.93 | 53,405 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,453 |
| England or Wales? | 0 | - | 4.94 | 45,504 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,318 |
| Australian Capitals | 0 | - | 4.92 | 62,665 |
| Europe Map Quiz | 0 | - | 5.00 | 4,747,313 |
| Country Codes of Europe | 0 | - | 3.46 | 13,679 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,619 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,161 |
| History of Russia Quiz | 0 | - | 4.49 | 31,850 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,646 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,644 |
| Capitals of French Regions | 0 | - | 4.45 | 16,021 |
| Capitals of German States | 0 | - | 4.74 | 28,897 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,213 |
| History of Italy | 0 | - | 4.55 | 31,908 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,483 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,572 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,103 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,204 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,794 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,700 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,144 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,121 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,004 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,457 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,356 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,043 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,823 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,453 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,626 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,148 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,794 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,087 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,130 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,811 |
| Regions of France | 0 | - | 4.77 | 120,019 |
| France Immigration by Country | 0 | - | 4.72 | 76,241 |
| Famous Germans | 0 | - | 4.50 | 54,857 |
| German Groups of Things | 0 | - | 4.46 | 38,390 |
| Germany True or False? | 0 | - | 4.61 | 48,664 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,753 |
| The Trojan War | 0 | - | 4.83 | 39,581 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,840 |
| Name that Greek Letter | 0 | - | 4.93 | 322,626 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,215 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,924 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,307 |
| Roman Emperors | 0 | - | 4.95 | 119,356 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,082 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,161 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,864 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,444,202 |
| Asia Map Quiz | 0 | - | 4.99 | 911,367 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,306 |
| African East Coast | 0 | - | 4.96 | 95,564 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,393 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,241 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,180 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,484 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,025 |
| European Physical Geography | 0 | - | 4.26 | 33,431 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,381 |
| The Only European Country ... | 0 | - | 4.91 | 215,273 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,393 |
| Geography of Russia | 0 | - | 4.57 | 21,486 |
| History of Austria | 0 | - | 4.70 | 17,808 |
| Presidents of France | 0 | - | 4.25 | 23,990 |
| Geography of the French Empire | 0 | - | 4.45 | 27,001 |
| The French Revolution | 0 | - | 4.46 | 23,872 |
| France Multiple Choice | 0 | - | 4.38 | 40,686 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,432 |
| The Vikings! | 0 | - | 4.46 | 28,290 |
| The Portuguese Empire | 0 | - | 4.58 | 12,032 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,993 |
| American to British Word Translation | 0 | - | 4.13 | 138,368 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,819 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 98,254 |
| Countries of Africa | 0 | - | 5.00 | 2,522,515 |
| Australia Map Quiz | 0 | - | 4.94 | 343,349 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,317 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,867 |
| History of France | 0 | - | 4.59 | 56,650 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,577 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,910 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,461 |
| Champions League Top 4 | 0 | - | 4.77 | 135,044 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,379,323 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,411 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,094 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,450 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,871 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,117 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,738 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,687 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,375 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,098 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,440 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,540 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,665 |
| European Geography A-Z | 0 | - | 4.29 | 49,124 |
| Word Chain - France | 0 | - | 4.38 | 42,682 |
| Ancient Greek Words | 0 | - | 4.93 | 111,141 |
| Italian Foods | 0 | - | 4.31 | 72,486 |
| The Mafia Quiz | 0 | - | 4.46 | 23,256 |
| History of The Netherlands | 0 | - | 4.46 | 17,371 |
| Canary Islands | 0 | - | 4.61 | 17,441 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,452 |
| British Spellings | 0 | - | 4.06 | 99,360 |
| British Groups of Things | 0 | - | 4.25 | 82,786 |
| British Acronyms | 0 | - | 4.39 | 45,712 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,999 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,468 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,127 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,180 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,669 |
| Flags of Africa Quiz | 0 | - | 5.00 | 467,180 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,284 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,932 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,718 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,864 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,801 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,264 |
| African Island Countries | 0 | - | 4.96 | 101,199 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,692 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,998 |
| Australian States and Territories | 0 | - | 4.96 | 141,403 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,150 |
| Australia Country Quiz | 0 | - | 4.43 | 69,454 |
| Australia True or False | 0 | - | 4.87 | 56,687 |
| Flags of North and South America | 0 | - | 4.99 | 370,499 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,420 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,548 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,915 |
| South America Map Quiz | 0 | - | 5.00 | 1,545,108 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,017,751 |
| North America Map Quiz | 0 | - | 4.98 | 246,759 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,560 |
| Canada Provinces and Territories | 0 | - | 5.00 | 340,060 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,022 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,892 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,699 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,235,376 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,764 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,191 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,739 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,535 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,795 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,416 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,785 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,554 |
| Slavic Countries | 0 | - | 4.96 | 111,288 |
| Austria... or Australia? | 0 | - | 4.68 | 104,122 |
| Geography of Germany | 0 | - | 4.35 | 17,139 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,876 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,845 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,161 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,275 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,850 |
