| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,674 |
| Official European Union Languages | 0 | - | 4.97 | 237,142 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,009 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,694 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,426 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,601 |
| Slavic Languages | 0 | - | 4.67 | 54,034 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,585 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,598 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,261 |
| History of Russia Quiz | 0 | - | 4.49 | 31,804 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,691 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,420 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,711 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,257 |
| Celtic Nations | 0 | - | 4.69 | 46,836 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,932 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,141 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,450 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,393 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,312 |
| Slavic Countries | 0 | - | 4.96 | 110,970 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,081 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,653 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,794 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,278 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,452 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,324 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,403 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,937 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,291 |
| States of Germany | 0 | - | 4.96 | 150,392 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,129 |
| Regions of Italy | 0 | - | 4.92 | 74,875 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,919 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,528 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,431 |
| Champions League Winners | 0 | - | 4.92 | 997,586 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,193 |
| Geography of Russia | 0 | - | 4.57 | 21,441 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,600 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,745 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,565 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,835 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,471 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,398 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,934 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,091 |
| Departments of France | 0 | - | 4.93 | 52,972 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,395 |
| England or Wales? | 0 | - | 4.94 | 45,383 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,701 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,470 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,610 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,062 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,285 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,912 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,435 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,768 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,662 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,579 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,547 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,768 |
| Name that Greek Letter | 0 | - | 4.94 | 321,898 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,450 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,274 |
| Languages of Spain | 0 | - | 4.36 | 23,167 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,713 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 217,134 |
| Famous Russians | 0 | - | 4.16 | 23,740 |
| Word Chain - Russia | 0 | - | 4.33 | 15,693 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,594 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,966 |
| The Trojan War | 0 | - | 4.83 | 39,474 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,736 |
| History of Italy | 0 | - | 4.55 | 31,849 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,254 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,119 |
| Roman Emperors | 0 | - | 4.95 | 118,642 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,502 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,010 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,299 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,445 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,484 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,968 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,931 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,782 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,295 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,042 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,789 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,688 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,066 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,387 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,377 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,025 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,660 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,984 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,022 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,654 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,832 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,631 |
| Capitals of French Regions | 0 | - | 4.45 | 15,995 |
| Regions of France | 0 | - | 4.78 | 119,461 |
| France Immigration by Country | 0 | - | 4.72 | 76,029 |
| Famous Germans | 0 | - | 4.50 | 54,679 |
| German Groups of Things | 0 | - | 4.46 | 38,326 |
| Capitals of German States | 0 | - | 4.74 | 28,824 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,120 |
| Germany True or False? | 0 | - | 4.61 | 48,568 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,539 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,981 |
| Ancient Greek Words | 0 | - | 4.92 | 110,820 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,629 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,889 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,084 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,073 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,362 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,467 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,437 |
| Top World Languages | 0 | - | 4.92 | 814,251 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,020 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,053 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,250 |
| Australian Capitals | 0 | - | 4.92 | 62,605 |
| European Physical Geography | 0 | - | 4.26 | 33,385 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,915 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,802 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,375 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,093 |
| Romania Country Quiz | 0 | - | 4.63 | 53,424 |
| History of Austria | 0 | - | 4.70 | 17,769 |
| Geography of the French Empire | 0 | - | 4.45 | 26,954 |
| The French Revolution | 0 | - | 4.46 | 23,810 |
| France Multiple Choice | 0 | - | 4.38 | 40,650 |
| History of France | 0 | - | 4.59 | 56,238 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,399 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,042 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,675 |
| The Vikings! | 0 | - | 4.46 | 28,256 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,736 |
| The Portuguese Empire | 0 | - | 4.54 | 12,002 |
| American to British Word Translation | 0 | - | 4.12 | 136,036 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,296 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,412 |
| Champions League Top 4 | 0 | - | 4.77 | 134,126 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,930 |
| Asia Map Quiz | 0 | - | 4.99 | 908,079 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,626 |
| Countries by Official Language | 0 | - | 4.95 | 192,955 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,655 |
| Places in their Native Language #2 | 0 | - | 4.83 | 123,058 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,386 |
| Countries in their Native Language | 0 | - | 4.99 | 196,810 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,971 |
| Countries of Africa | 0 | - | 5.00 | 2,511,652 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,921 |
| African East Coast | 0 | - | 4.96 | 95,173 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,046 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,937 |
| Australia Map Quiz | 0 | - | 4.94 | 342,725 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,784 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,401 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,328 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,277 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,603 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,282 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,718 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,955 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,341 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,547 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,214 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,970 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,335 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,434 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,551 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,779 |
| European Geography A-Z | 0 | - | 4.28 | 49,037 |
| Country Codes of Europe | 0 | - | 3.46 | 13,658 |
| The Only European Country ... | 0 | - | 4.91 | 214,194 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,791 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,244 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,814 |
| Austria... or Australia? | 0 | - | 4.68 | 103,939 |
| Presidents of France | 0 | - | 4.25 | 23,929 |
| Word Chain - France | 0 | - | 4.38 | 42,606 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,805 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,795 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,231 |
| Italian Foods | 0 | - | 4.31 | 72,268 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,026 |
| The Mafia Quiz | 0 | - | 4.46 | 23,214 |
| History of The Netherlands | 0 | - | 4.46 | 17,332 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,970 |
| Canary Islands | 0 | - | 4.61 | 17,416 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,329 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,220 |
| British Spellings | 0 | - | 4.07 | 99,278 |
| British Groups of Things | 0 | - | 4.25 | 82,715 |
| British Acronyms | 0 | - | 4.39 | 45,648 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,968 |
