| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,366 |
| Official European Union Languages | 0 | - | 4.97 | 238,988 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,183 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,780 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,155 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,292 |
| Slavic Languages | 0 | - | 4.68 | 54,491 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,129 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,925 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,394 |
| History of Russia Quiz | 0 | - | 4.47 | 31,958 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,818 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,326 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,436 |
| Celtic Nations | 0 | - | 4.69 | 47,004 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,624 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,555 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,463 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,626 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,457 |
| Slavic Countries | 0 | - | 4.96 | 111,939 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,491 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,224 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,436 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,686 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,612 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,540 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,996 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,429 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,190 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,376 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,140 |
| States of Germany | 0 | - | 4.95 | 153,364 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,314 |
| Regions of Italy | 0 | - | 4.92 | 76,319 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,467 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,506 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,442 |
| Champions League Winners | 0 | - | 4.92 | 1,010,354 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,598 |
| Geography of Russia | 0 | - | 4.57 | 21,557 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,961 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,762 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,083 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,497 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,771 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,507 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,426 |
| Departments of France | 0 | - | 4.93 | 54,531 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,624 |
| England or Wales? | 0 | - | 4.94 | 45,815 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,111 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,659 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,926 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,722 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,666 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,002 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,457 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,935 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,900 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,883 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,219 |
| Name that Greek Letter | 0 | - | 4.93 | 324,239 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,675 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,518 |
| Languages of Spain | 0 | - | 4.36 | 23,357 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 220,968 |
| Famous Russians | 0 | - | 4.16 | 23,874 |
| Word Chain - Russia | 0 | - | 4.33 | 15,773 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,785 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,559 |
| The Trojan War | 0 | - | 4.83 | 39,812 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,307 |
| History of Italy | 0 | - | 4.55 | 32,064 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,994 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,667 |
| Roman Emperors | 0 | - | 4.95 | 120,449 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,730 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,310 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,769 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 32,586 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,663 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,031 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,428 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,825 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,379 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,043 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,383 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,237 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,050 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,314 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,881 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,864 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,369 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,033 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,327 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,307 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,918 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,561 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,083 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,146 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Regions of France | 0 | - | 4.70 | 121,316 |
| France Immigration by Country | 0 | - | 4.70 | 76,700 |
| Famous Germans | 0 | - | 4.50 | 55,548 |
| German Groups of Things | 0 | - | 4.46 | 38,531 |
| Capitals of German States | 0 | - | 4.74 | 28,992 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,410 |
| Germany True or False? | 0 | - | 4.61 | 48,904 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,162 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,063 |
| Ancient Greek Words | 0 | - | 4.93 | 111,965 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,857 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,516 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,352 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,476 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,183 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,151 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,645 |
| Top World Languages | 0 | - | 4.92 | 824,978 |
| Official Languages of South Africa | 0 | - | 4.57 | 26,189 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,696 |
| Australian Capitals | 0 | - | 4.92 | 62,762 |
| European Physical Geography | 0 | - | 4.26 | 33,543 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,310 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,028 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,816 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,573 |
| Romania Country Quiz | 0 | - | 4.63 | 53,930 |
| History of Austria | 0 | - | 4.70 | 17,915 |
| Geography of the French Empire | 0 | - | 4.45 | 27,161 |
| The French Revolution | 0 | - | 4.47 | 24,072 |
| France Multiple Choice | 0 | - | 4.39 | 40,774 |
| History of France | 0 | - | 4.61 | 57,308 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,209 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,297 |
| The Vikings! | 0 | - | 4.46 | 28,372 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,225 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| American to British Word Translation | 0 | - | 4.14 | 139,349 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,183 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,733 |
| Champions League Top 4 | 0 | - | 4.77 | 137,414 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,887 |
| Asia Map Quiz | 0 | - | 4.99 | 920,132 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,197 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,409 |
| Countries by Official Language | 0 | - | 4.95 | 195,346 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,538 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,507 |
| Countries in their Native Language | 0 | - | 4.99 | 199,137 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,187 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,006 |
| Australia Map Quiz | 0 | - | 4.95 | 345,298 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,155 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,886 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,751 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,682 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,171 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,302 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,645 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,495 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,184 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,925 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,555 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,036 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,171 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,759 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,463 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,775 |
| European Geography A-Z | 0 | - | 4.29 | 49,372 |
| Country Codes of Europe | 0 | - | 3.43 | 13,760 |
| The Only European Country ... | 0 | - | 4.91 | 217,545 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,681 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,321 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,327 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,686 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,101 |
| Austria... or Australia? | 0 | - | 4.68 | 104,526 |
| Famous French People | 0 | - | 4.07 | 35,882 |
| Presidents of France | 0 | - | 4.25 | 24,219 |
| Word Chain - France | 0 | - | 4.38 | 42,855 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,088 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,952 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,825 |
| Italian Foods | 0 | - | 4.30 | 72,968 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,437 |
| The Mafia Quiz | 0 | - | 4.46 | 23,380 |
| History of The Netherlands | 0 | - | 4.46 | 17,492 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,071 |
| Canary Islands | 0 | - | 4.62 | 17,498 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,154 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,843 |
| British Spellings | 0 | - | 4.06 | 99,516 |
| British Groups of Things | 0 | - | 4.25 | 82,917 |
| British Acronyms | 0 | - | 4.40 | 45,858 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,059 |
| British Monopoly Board | 0 | - | 4.52 | 41,201 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,968 |
