| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,696 |
| Official European Union Languages | 0 | - | 4.97 | 237,185 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,043 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,767 |
| Slavic Languages | 0 | - | 4.68 | 54,049 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,680 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,600 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,608 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,286 |
| History of Russia Quiz | 0 | - | 4.49 | 31,807 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,598 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,742 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,426 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,726 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,259 |
| Celtic Nations | 0 | - | 4.69 | 46,838 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,943 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,233 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,564 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,428 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,330 |
| Slavic Countries | 0 | - | 4.96 | 110,997 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,092 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,835 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,813 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,290 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,474 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,347 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,434 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,972 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,505 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,313 |
| States of Germany | 0 | - | 4.96 | 150,476 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,143 |
| Regions of Italy | 0 | - | 4.92 | 74,902 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,942 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,588 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,462 |
| Champions League Winners | 0 | - | 4.92 | 997,851 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,203 |
| Geography of Russia | 0 | - | 4.57 | 21,445 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,618 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,752 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,572 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,911 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,527 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,450 |
| Departments of France | 0 | - | 4.93 | 52,997 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,400 |
| England or Wales? | 0 | - | 4.94 | 45,390 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,740 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,475 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,611 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,085 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,335 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,932 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,554 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,919 |
| Name that Greek Letter | 0 | - | 4.94 | 321,965 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,454 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,277 |
| Languages of Spain | 0 | - | 4.36 | 23,170 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,741 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 217,217 |
| Word Chain - Russia | 0 | - | 4.33 | 15,696 |
| The Trojan War | 0 | - | 4.83 | 39,478 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,765 |
| History of Italy | 0 | - | 4.55 | 31,856 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,277 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,134 |
| Roman Emperors | 0 | - | 4.95 | 118,679 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,505 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,012 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,349 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,448 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,510 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,991 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,955 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,811 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,312 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,072 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,921 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,699 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,075 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,411 |
| Europe Map Quiz | 0 | - | 5.00 | 4,736,406 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,032 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,665 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,993 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,028 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,665 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,232 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,675 |
| Capitals of French Regions | 0 | - | 4.45 | 15,997 |
| Regions of France | 0 | - | 4.78 | 119,508 |
| France Immigration by Country | 0 | - | 4.72 | 76,038 |
| Famous Germans | 0 | - | 4.50 | 54,701 |
| German Groups of Things | 0 | - | 4.46 | 38,337 |
| Capitals of German States | 0 | - | 4.74 | 28,848 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,135 |
| Germany True or False? | 0 | - | 4.61 | 48,579 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,573 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,125 |
| Ancient Greek Words | 0 | - | 4.92 | 110,855 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,665 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,902 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,094 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,097 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,443 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,501 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,509 |
| Top World Languages | 0 | - | 4.92 | 814,549 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,333 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,065 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,378 |
| Australian Capitals | 0 | - | 4.92 | 62,610 |
| European Physical Geography | 0 | - | 4.26 | 33,387 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,807 |
| History of Austria | 0 | - | 4.70 | 17,773 |
| Geography of the French Empire | 0 | - | 4.45 | 26,960 |
| The French Revolution | 0 | - | 4.46 | 23,815 |
| France Multiple Choice | 0 | - | 4.38 | 40,652 |
| History of France | 0 | - | 4.59 | 56,281 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,400 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,170 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,687 |
| The Vikings! | 0 | - | 4.46 | 28,260 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,745 |
| The Portuguese Empire | 0 | - | 4.54 | 12,004 |
| American to British Word Translation | 0 | - | 4.12 | 136,524 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,308 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,416 |
| Champions League Top 4 | 0 | - | 4.77 | 134,183 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,070 |
| Asia Map Quiz | 0 | - | 4.99 | 908,295 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,678 |
| Countries by Official Language | 0 | - | 4.95 | 192,993 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,699 |
| Places in their Native Language #2 | 0 | - | 4.83 | 123,080 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,446 |
| Countries in their Native Language | 0 | - | 4.99 | 196,854 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,018 |
| Countries of Africa | 0 | - | 5.00 | 2,512,479 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,946 |
| African East Coast | 0 | - | 4.96 | 95,201 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,071 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,965 |
| Australia Map Quiz | 0 | - | 4.94 | 342,774 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,162 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,479 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,348 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,343 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,655 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,300 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,738 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,974 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,403 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,564 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,241 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,990 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,344 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,445 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,562 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,835 |
| European Geography A-Z | 0 | - | 4.28 | 49,042 |
| Country Codes of Europe | 0 | - | 3.46 | 13,662 |
| The Only European Country ... | 0 | - | 4.91 | 214,311 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,835 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,249 |
| Austria... or Australia? | 0 | - | 4.68 | 103,951 |
| Presidents of France | 0 | - | 4.25 | 23,932 |
| Word Chain - France | 0 | - | 4.38 | 42,610 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,811 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,799 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,296 |
| Italian Foods | 0 | - | 4.31 | 72,288 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,035 |
| The Mafia Quiz | 0 | - | 4.46 | 23,218 |
| History of The Netherlands | 0 | - | 4.46 | 17,339 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,970 |
| Canary Islands | 0 | - | 4.61 | 17,420 |
| Real Madrid 2010s Starting XI | 0 | - | 4.88 | 66,362 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,240 |
| British Spellings | 0 | - | 4.07 | 99,286 |
| British Groups of Things | 0 | - | 4.25 | 82,719 |
| British Acronyms | 0 | - | 4.39 | 45,653 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,971 |
| British Monopoly Board | 0 | - | 4.52 | 41,068 |
| Geography of Scotland | 0 | - | 4.63 | 21,505 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,663 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,995 |
| Spanish to English Country Names | 0 | - | 4.85 | 32,217 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,770 |
| Top World Languages A-Z | 0 | - | 4.83 | 36,369 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,714 |
| German-Speaking Countries | 0 | - | 4.89 | 123,567 |
| Italian Name Translation | 0 | - | 4.81 | 45,313 |
| French-Speaking Countries | 0 | - | 4.85 | 269,103 |
| Officially Recognized Languages of India | 0 | - | 4.38 | 31,115 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,510 |
