| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,277 |
| Official European Union Languages | 0 | - | 4.97 | 238,821 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,068 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,308 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,852 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,796 |
| Slavic Languages | 0 | - | 4.68 | 54,441 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,079 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,895 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,271 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,336 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,786 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,279 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,414 |
| Celtic Nations | 0 | - | 4.69 | 46,977 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,496 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,093 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,637 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,498 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,346 |
| Slavic Countries | 0 | - | 4.96 | 111,826 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,438 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,152 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,702 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,595 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,578 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,325 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 81,497 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,208 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,037 |
| States of Germany | 0 | - | 4.95 | 153,020 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,226 |
| Regions of Italy | 0 | - | 4.92 | 76,165 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,369 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,261 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,371 |
| Champions League Winners | 0 | - | 4.91 | 1,009,159 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,553 |
| Geography of Russia | 0 | - | 4.57 | 21,550 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,936 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,734 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,762 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,244 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,494 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,438 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,401 |
| Departments of France | 0 | - | 4.93 | 54,383 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,599 |
| England or Wales? | 0 | - | 4.94 | 45,774 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,872 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,632 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,669 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,827 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,468 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,585 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,944 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,378 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,915 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,867 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,836 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,513 |
| Name that Greek Letter | 0 | - | 4.93 | 324,083 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,652 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,507 |
| Languages of Spain | 0 | - | 4.36 | 23,345 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,509 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 220,598 |
| Famous Russians | 0 | - | 4.16 | 23,857 |
| Word Chain - Russia | 0 | - | 4.33 | 15,770 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,767 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,513 |
| The Trojan War | 0 | - | 4.83 | 39,780 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,111 |
| History of Italy | 0 | - | 4.55 | 32,040 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,910 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,624 |
| Roman Emperors | 0 | - | 4.95 | 120,310 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,712 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,287 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,534 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 32,576 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,637 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,072 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,352 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,954 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,754 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,993 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,727 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,025 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,854 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,148 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,632 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,927 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,337 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,998 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,281 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,280 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,744 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,065 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,099 |
| Capitals of French Regions | 0 | - | 4.45 | 16,096 |
| Regions of France | 0 | - | 4.72 | 121,123 |
| France Immigration by Country | 0 | - | 4.70 | 76,646 |
| Famous Germans | 0 | - | 4.50 | 55,483 |
| German Groups of Things | 0 | - | 4.46 | 38,508 |
| Capitals of German States | 0 | - | 4.74 | 28,979 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,382 |
| Germany True or False? | 0 | - | 4.61 | 48,864 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,117 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,632 |
| Ancient Greek Words | 0 | - | 4.93 | 111,833 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,707 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,467 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,325 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,388 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,797 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,972 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,431 |
| Top World Languages | 0 | - | 4.92 | 823,874 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,855 |
| Official Languages of South Africa | 0 | - | 4.57 | 26,170 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,513 |
| Australian Capitals | 0 | - | 4.92 | 62,742 |
| European Physical Geography | 0 | - | 4.26 | 33,536 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,269 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,996 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,783 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,520 |
| Romania Country Quiz | 0 | - | 4.63 | 53,872 |
| History of Austria | 0 | - | 4.70 | 17,893 |
| Geography of the French Empire | 0 | - | 4.45 | 27,149 |
| The French Revolution | 0 | - | 4.47 | 24,048 |
| France Multiple Choice | 0 | - | 4.39 | 40,762 |
| History of France | 0 | - | 4.59 | 57,225 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,734 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,238 |
| The Vikings! | 0 | - | 4.46 | 28,366 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,197 |
| The Portuguese Empire | 0 | - | 4.58 | 12,081 |
| American to British Word Translation | 0 | - | 4.14 | 139,251 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,122 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,701 |
| Champions League Top 4 | 0 | - | 4.77 | 137,108 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,352 |
| Asia Map Quiz | 0 | - | 4.99 | 918,830 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,163 |
| Countries by Official Language | 0 | - | 4.95 | 195,201 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,215 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,286 |
| Countries in their Native Language | 0 | - | 4.99 | 198,989 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,031 |
| Countries of Africa | 0 | - | 5.00 | 2,542,969 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,039 |
| African East Coast | 0 | - | 4.96 | 96,220 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,082 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,844 |
| Australia Map Quiz | 0 | - | 4.95 | 344,975 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,437 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,682 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,720 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,433 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,899 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,006 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,382 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,247 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,931 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,706 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,347 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,868 |
| European Geography by Letter - W | 0 | - | 4.20 | 83,031 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,730 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,307 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,591 |
| European Geography A-Z | 0 | - | 4.29 | 49,347 |
| Country Codes of Europe | 0 | - | 3.43 | 13,741 |
| The Only European Country ... | 0 | - | 4.91 | 217,233 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,469 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,262 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,322 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,663 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,073 |
| Austria... or Australia? | 0 | - | 4.68 | 104,468 |
| Famous French People | 0 | - | 4.07 | 35,794 |
| Presidents of France | 0 | - | 4.25 | 24,192 |
| Word Chain - France | 0 | - | 4.38 | 42,824 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,059 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,944 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,430 |
| Italian Foods | 0 | - | 4.30 | 72,897 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,395 |
| The Mafia Quiz | 0 | - | 4.46 | 23,363 |
| History of The Netherlands | 0 | - | 4.46 | 17,469 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,063 |
| Canary Islands | 0 | - | 4.62 | 17,489 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 67,950 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,800 |
| British Spellings | 0 | - | 4.06 | 99,493 |
| British Groups of Things | 0 | - | 4.25 | 82,900 |
| British Acronyms | 0 | - | 4.40 | 45,836 |
