| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,580 |
| Official European Union Languages | 0 | - | 4.97 | 236,522 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,700 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,346 |
| Slavic Languages | 0 | - | 4.67 | 53,982 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,195 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,199 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,538 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,567 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,129 |
| History of Russia Quiz | 0 | - | 4.49 | 31,794 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,565 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,446 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,377 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,611 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,239 |
| Celtic Nations | 0 | - | 4.69 | 46,812 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,848 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,824 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,880 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,257 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,197 |
| Slavic Countries | 0 | - | 4.96 | 110,856 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,048 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,914 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,681 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,243 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,331 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,214 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,145 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,253 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,789 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,991 |
| Geography of Russia | 0 | - | 4.57 | 21,427 |
| States of Germany | 0 | - | 4.96 | 150,046 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,011 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| Regions of Italy | 0 | - | 4.92 | 74,725 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,809 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,342 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,162 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,702 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,405 |
| Champions League Winners | 0 | - | 4.92 | 996,325 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,532 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,203 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,164 |
| Departments of France | 0 | - | 4.93 | 52,822 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,367 |
| England or Wales? | 0 | - | 4.94 | 45,317 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,494 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,450 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,599 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,986 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,046 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,428 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,246 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,792 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,513 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,885 |
| Name that Greek Letter | 0 | - | 4.94 | 321,656 |
| Languages of Spain | 0 | - | 4.36 | 23,147 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,425 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,530 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,702 |
| Word Chain - Russia | 0 | - | 4.33 | 15,685 |
| The Trojan War | 0 | - | 4.83 | 39,428 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,535 |
| History of Italy | 0 | - | 4.55 | 31,814 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,159 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,045 |
| Roman Emperors | 0 | - | 4.95 | 118,485 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,481 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,981 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,099 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,099 |
| Top World Languages | 0 | - | 4.92 | 813,100 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,406 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,904 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,849 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,709 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,217 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,888 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,671 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,627 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,023 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,306 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,241 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,991 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,616 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,944 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,982 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,595 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,149 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,610 |
| Capitals of French Regions | 0 | - | 4.45 | 15,985 |
| Regions of France | 0 | - | 4.78 | 119,246 |
| France Immigration by Country | 0 | - | 4.72 | 75,963 |
| Famous Germans | 0 | - | 4.50 | 54,612 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Capitals of German States | 0 | - | 4.74 | 28,811 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,096 |
| Germany True or False? | 0 | - | 4.61 | 48,535 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,464 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,114 |
| Ancient Greek Words | 0 | - | 4.92 | 110,691 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,486 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,825 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,045 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,958 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,082 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,335 |
| Countries by Official Language | 0 | - | 4.95 | 192,763 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,450 |
| Places in their Native Language #2 | 0 | - | 4.85 | 122,973 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,116 |
| Countries in their Native Language | 0 | - | 4.99 | 196,626 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,789 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,279 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,046 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,298 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,775 |
| History of Austria | 0 | - | 4.70 | 17,747 |
| Geography of the French Empire | 0 | - | 4.48 | 26,933 |
| The French Revolution | 0 | - | 4.46 | 23,785 |
| France Multiple Choice | 0 | - | 4.38 | 40,635 |
| History of France | 0 | - | 4.59 | 56,042 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,383 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,539 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,616 |
| The Vikings! | 0 | - | 4.45 | 28,245 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,696 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| American to British Word Translation | 0 | - | 4.06 | 117,060 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,219 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,394 |
| Champions League Top 4 | 0 | - | 4.77 | 133,812 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,455 |
| Asia Map Quiz | 0 | - | 4.99 | 906,995 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,532 |
| Countries of Africa | 0 | - | 5.00 | 2,507,792 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,813 |
| African East Coast | 0 | - | 4.96 | 95,044 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,924 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,798 |
| Australia Map Quiz | 0 | - | 4.94 | 342,477 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,802 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,141 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,206 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,981 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,301 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,218 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,619 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,902 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,277 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,491 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,168 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,918 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,295 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,393 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,509 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,551 |
| European Geography A-Z | 0 | - | 4.28 | 49,000 |
| Country Codes of Europe | 0 | - | 3.46 | 13,653 |
| The Only European Country ... | 0 | - | 4.91 | 213,831 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,532 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,236 |
| Austria... or Australia? | 0 | - | 4.68 | 103,869 |
| Presidents of France | 0 | - | 4.25 | 23,903 |
| Word Chain - France | 0 | - | 4.38 | 42,582 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,775 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,771 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,945 |
| Italian Foods | 0 | - | 4.31 | 72,183 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,951 |
| The Mafia Quiz | 0 | - | 4.46 | 23,206 |
| History of The Netherlands | 0 | - | 4.46 | 17,311 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,957 |
| Canary Islands | 0 | - | 4.61 | 17,402 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,151 |
| British Spellings | 0 | - | 4.07 | 99,204 |
| British Groups of Things | 0 | - | 4.25 | 82,669 |
| British Acronyms | 0 | - | 4.39 | 45,619 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,945 |
| British Monopoly Board | 0 | - | 4.52 | 41,033 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,468 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,899 |
| Spanish to English Country Names | 0 | - | 4.85 | 32,022 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,690 |
| Top World Languages A-Z | 0 | - | 4.83 | 36,291 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,636 |
| German-Speaking Countries | 0 | - | 4.89 | 123,505 |
| Italian Name Translation | 0 | - | 4.81 | 45,031 |
| French-Speaking Countries | 0 | - | 4.85 | 268,794 |
| Officially Recognized Languages of India | 0 | - | 4.38 | 31,072 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,434 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,321 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,622 |
