| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,784 |
| Official European Union Languages | 0 | - | 4.97 | 237,424 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,182 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,275 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,924 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,100 |
| Slavic Languages | 0 | - | 4.68 | 54,104 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,692 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,640 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,457 |
| History of Russia Quiz | 0 | - | 4.49 | 31,828 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,005 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,487 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,813 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,290 |
| Celtic Nations | 0 | - | 4.69 | 46,856 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,027 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,992 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,055 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,590 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,404 |
| Slavic Countries | 0 | - | 4.96 | 111,121 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,147 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,696 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,798 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,919 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,320 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,552 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,472 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,568 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,177 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,418 |
| States of Germany | 0 | - | 4.96 | 150,795 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,255 |
| Regions of Italy | 0 | - | 4.92 | 75,036 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,028 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,950 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,622 |
| Champions League Winners | 0 | - | 4.92 | 999,444 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,257 |
| Geography of Russia | 0 | - | 4.57 | 21,461 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,781 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,598 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,382 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,978 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,808 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,005 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,140 |
| Departments of France | 0 | - | 4.93 | 53,134 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,414 |
| England or Wales? | 0 | - | 4.94 | 45,446 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,006 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,491 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,619 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,190 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,637 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,041 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,511 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,871 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,698 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,628 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,602 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,747 |
| Name that Greek Letter | 0 | - | 4.93 | 322,243 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,501 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,312 |
| Languages of Spain | 0 | - | 4.36 | 23,208 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,070 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 217,682 |
| Famous Russians | 0 | - | 4.16 | 23,757 |
| Word Chain - Russia | 0 | - | 4.33 | 15,712 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,618 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,070 |
| The Trojan War | 0 | - | 4.83 | 39,522 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,980 |
| History of Italy | 0 | - | 4.55 | 31,875 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,367 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,207 |
| Roman Emperors | 0 | - | 4.95 | 118,991 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,537 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,061 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,928 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,469 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,609 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,071 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,041 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,921 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,386 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,203 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,978 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,749 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,175 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,507 |
| Europe Map Quiz | 0 | - | 5.00 | 4,741,337 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,087 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,723 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,036 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,074 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,732 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,871 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,689 |
| Capitals of French Regions | 0 | - | 4.45 | 16,011 |
| Regions of France | 0 | - | 4.78 | 119,723 |
| France Immigration by Country | 0 | - | 4.72 | 76,117 |
| Famous Germans | 0 | - | 4.50 | 54,782 |
| German Groups of Things | 0 | - | 4.46 | 38,358 |
| Capitals of German States | 0 | - | 4.74 | 28,880 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,169 |
| Germany True or False? | 0 | - | 4.61 | 48,622 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,646 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,725 |
| Ancient Greek Words | 0 | - | 4.93 | 110,989 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,771 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,987 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,121 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,688 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,745 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,988 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,023 |
| Top World Languages | 0 | - | 4.92 | 815,891 |
| Africa Map Quiz | 0 | - | 5.00 | 2,108,739 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,098 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,541 |
| Australian Capitals | 0 | - | 4.92 | 62,639 |
| European Physical Geography | 0 | - | 4.26 | 33,409 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,972 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,831 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,450 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,160 |
| Romania Country Quiz | 0 | - | 4.63 | 53,519 |
| History of Austria | 0 | - | 4.70 | 17,784 |
| Geography of the French Empire | 0 | - | 4.45 | 26,977 |
| The French Revolution | 0 | - | 4.46 | 23,843 |
| France Multiple Choice | 0 | - | 4.38 | 40,670 |
| History of France | 0 | - | 4.59 | 56,464 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,413 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,692 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,762 |
| The Vikings! | 0 | - | 4.46 | 28,272 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,787 |
| The Portuguese Empire | 0 | - | 4.58 | 12,016 |
| American to British Word Translation | 0 | - | 4.13 | 137,785 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,369 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,438 |
| Champions League Top 4 | 0 | - | 4.77 | 134,615 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,046 |
| Asia Map Quiz | 0 | - | 4.99 | 909,678 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,719 |
| Countries by Official Language | 0 | - | 4.95 | 193,361 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,904 |
| Places in their Native Language #2 | 0 | - | 4.83 | 123,198 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,908 |
| Countries in their Native Language | 0 | - | 4.99 | 197,142 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,317 |
| Countries of Africa | 0 | - | 5.00 | 2,516,827 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,137 |
| African East Coast | 0 | - | 4.96 | 95,381 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,246 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,078 |
| Australia Map Quiz | 0 | - | 4.94 | 343,023 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,399 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,792 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,409 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,642 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,957 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,378 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,803 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,046 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,667 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,624 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,314 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,038 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,379 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,476 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,608 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,097 |
| European Geography A-Z | 0 | - | 4.28 | 49,082 |
| Country Codes of Europe | 0 | - | 3.46 | 13,666 |
| The Only European Country ... | 0 | - | 4.91 | 214,771 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,080 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,262 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,855 |
| Austria... or Australia? | 0 | - | 4.68 | 104,037 |
| Presidents of France | 0 | - | 4.25 | 23,952 |
| Word Chain - France | 0 | - | 4.38 | 42,651 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,844 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,821 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,578 |
| Italian Foods | 0 | - | 4.31 | 72,382 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,097 |
| The Mafia Quiz | 0 | - | 4.46 | 23,230 |
| History of The Netherlands | 0 | - | 4.46 | 17,350 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,982 |
| Canary Islands | 0 | - | 4.61 | 17,428 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,563 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,314 |
| British Spellings | 0 | - | 4.07 | 99,331 |
| British Groups of Things | 0 | - | 4.25 | 82,744 |
| British Acronyms | 0 | - | 4.39 | 45,676 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,984 |
