| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,522 |
| Official European Union Languages | 0 | - | 4.97 | 236,349 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,602 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,011 |
| Slavic Languages | 0 | - | 4.67 | 53,932 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,070 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,858 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,483 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,529 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,001 |
| History of Russia Quiz | 0 | - | 4.49 | 31,771 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,542 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,257 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,341 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,540 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,225 |
| Celtic Nations | 0 | - | 4.69 | 46,796 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,780 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,566 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,541 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,142 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,067 |
| Slavic Countries | 0 | - | 4.96 | 110,770 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,010 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,159 |
| Top Asian Languages on a Map | 0 | - | 4.94 | 70,590 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,216 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,265 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,113 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,125 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,648 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,608 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,099 |
| States of Germany | 0 | - | 4.96 | 149,782 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,910 |
| Regions of Italy | 0 | - | 4.92 | 74,599 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,736 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,137 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,053 |
| Champions League Winners | 0 | - | 4.92 | 995,089 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,097 |
| Geography of Russia | 0 | - | 4.57 | 21,415 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,483 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,684 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,392 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,220 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 273,974 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,908 |
| Departments of France | 0 | - | 4.93 | 52,665 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,342 |
| England or Wales? | 0 | - | 4.94 | 45,281 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,294 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,424 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Word Scramble - European Countries | 0 | - | 4.74 | 140,911 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,811 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,741 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,489 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,191 |
| Name that Greek Letter | 0 | - | 4.94 | 321,438 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,405 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,226 |
| Languages of Spain | 0 | - | 4.36 | 23,133 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,339 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,301 |
| Word Chain - Russia | 0 | - | 4.33 | 15,680 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,539 |
| The Trojan War | 0 | - | 4.83 | 39,394 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,346 |
| History of Italy | 0 | - | 4.55 | 31,800 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,088 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,976 |
| Roman Emperors | 0 | - | 4.95 | 118,285 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,462 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,960 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,925 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,411 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,311 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 110,824 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,766 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,635 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,162 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,778 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,620 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,582 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,988 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,239 |
| Europe Map Quiz | 0 | - | 5.00 | 4,727,435 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,960 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,580 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,908 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,947 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,554 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,086 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,574 |
| Capitals of French Regions | 0 | - | 4.45 | 15,978 |
| Regions of France | 0 | - | 4.78 | 119,037 |
| France Immigration by Country | 0 | - | 4.72 | 75,915 |
| Famous Germans | 0 | - | 4.50 | 54,561 |
| German Groups of Things | 0 | - | 4.46 | 38,290 |
| Capitals of German States | 0 | - | 4.74 | 28,796 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,076 |
| Germany True or False? | 0 | - | 4.61 | 48,506 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,385 |
| Olympian Gods Quiz | 0 | - | 4.96 | 494,740 |
| Ancient Greek Words | 0 | - | 4.92 | 110,541 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,246 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,729 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,025 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,861 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,814 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,193 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,846 |
| Top World Languages | 0 | - | 4.92 | 812,012 |
| Africa Map Quiz | 0 | - | 5.00 | 2,102,812 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,037 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,474 |
| Australian Capitals | 0 | - | 4.92 | 62,585 |
| European Physical Geography | 0 | - | 4.26 | 33,364 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,753 |
| History of Austria | 0 | - | 4.70 | 17,734 |
| Geography of the French Empire | 0 | - | 4.48 | 26,912 |
| The French Revolution | 0 | - | 4.46 | 23,746 |
| France Multiple Choice | 0 | - | 4.38 | 40,619 |
| History of France | 0 | - | 4.59 | 55,877 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,370 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,111 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,546 |
| The Vikings! | 0 | - | 4.45 | 28,234 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,657 |
| The Portuguese Empire | 0 | - | 4.54 | 11,980 |
| American to British Word Translation | 0 | - | 4.06 | 117,008 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,164 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,379 |
| Champions League Top 4 | 0 | - | 4.77 | 133,515 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,437,779 |
| Asia Map Quiz | 0 | - | 4.99 | 905,793 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,505 |
| Countries by Official Language | 0 | - | 4.95 | 192,591 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,274 |
| Places in their Native Language #2 | 0 | - | 4.85 | 122,897 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,881 |
| Countries in their Native Language | 0 | - | 4.99 | 196,479 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,656 |
| Countries of Africa | 0 | - | 5.00 | 2,504,432 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,716 |
| African East Coast | 0 | - | 4.96 | 94,929 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,797 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,721 |
| Australia Map Quiz | 0 | - | 4.94 | 342,228 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,690 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,836 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,157 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,737 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,068 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,152 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,394 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,839 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,207 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,430 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,104 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,883 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,266 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,369 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,474 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,334 |
| European Geography A-Z | 0 | - | 4.28 | 48,954 |
| Country Codes of Europe | 0 | - | 3.46 | 13,645 |
| The Only European Country ... | 0 | - | 4.91 | 213,501 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,322 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,227 |
| Austria... or Australia? | 0 | - | 4.68 | 103,818 |
| Presidents of France | 0 | - | 4.25 | 23,866 |
| Word Chain - France | 0 | - | 4.38 | 42,567 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,739 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,749 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,677 |
| Italian Foods | 0 | - | 4.30 | 72,119 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,908 |
| The Mafia Quiz | 0 | - | 4.46 | 23,194 |
| History of The Netherlands | 0 | - | 4.46 | 17,297 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,951 |
| Canary Islands | 0 | - | 4.61 | 17,388 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,009 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,090 |
| British Spellings | 0 | - | 4.07 | 99,183 |
| British Groups of Things | 0 | - | 4.25 | 82,656 |
| British Acronyms | 0 | - | 4.39 | 45,600 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,940 |
| British Monopoly Board | 0 | - | 4.52 | 41,017 |
| Geography of Scotland | 0 | - | 4.63 | 21,466 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,310 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,374,747 |
| Spanish to English Country Names | 0 | - | 4.85 | 31,901 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,641 |
| Top World Languages A-Z | 0 | - | 4.83 | 36,245 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,583 |
| German-Speaking Countries | 0 | - | 4.89 | 123,475 |
| French-Speaking Countries | 0 | - | 4.85 | 268,617 |
| Officially Recognized Languages of India | 0 | - | 4.38 | 31,045 |
