| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,395 |
| Official European Union Languages | 0 | - | 4.97 | 239,069 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,228 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,914 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,256 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,957 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,466 |
| Slavic Languages | 0 | - | 4.68 | 54,512 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,146 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,440 |
| History of Russia Quiz | 0 | - | 4.47 | 31,968 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,937 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,833 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,356 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,706 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,624 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,809 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,687 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,491 |
| Slavic Countries | 0 | - | 4.96 | 111,988 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,518 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,248 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,736 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,722 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,626 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,623 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,444 |
| Celtic Nations | 0 | - | 4.69 | 47,008 |
| Champions League Winners | 0 | - | 4.92 | 1,010,802 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,193 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,462 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,448 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,443 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,183 |
| States of Germany | 0 | - | 4.95 | 153,512 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,356 |
| Regions of Italy | 0 | - | 4.92 | 76,405 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,510 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,633 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,473 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,970 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,628 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,468 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,667 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,940 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,528 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,440 |
| Departments of France | 0 | - | 4.93 | 54,601 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,635 |
| England or Wales? | 0 | - | 4.94 | 45,826 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,204 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,665 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,946 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,817 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,685 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,021 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,482 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,948 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,912 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,904 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,427 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,268 |
| The Trojan War | 0 | - | 4.83 | 39,841 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,573 |
| Name that Greek Letter | 0 | - | 4.93 | 324,323 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,386 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,680 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,930 |
| Roman Emperors | 0 | - | 4.95 | 120,516 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,529 |
| Languages of Spain | 0 | - | 4.36 | 23,364 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 221,127 |
| Famous Russians | 0 | - | 4.16 | 23,880 |
| Word Chain - Russia | 0 | - | 4.33 | 15,774 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,792 |
| Russian Inventions | 0 | - | 4.39 | 12,986 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,580 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,214 |
| History of Italy | 0 | - | 4.55 | 32,082 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,043 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,744 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,319 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 32,593 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,091 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,491 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,880 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,432 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,101 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,472 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,280 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,096 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,347 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,934 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,171 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,386 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,044 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,340 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,317 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,961 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,579 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,093 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,163 |
| Capitals of French Regions | 0 | - | 4.45 | 16,121 |
| Regions of France | 0 | - | 4.70 | 121,403 |
| France Immigration by Country | 0 | - | 4.70 | 76,715 |
| Famous Germans | 0 | - | 4.50 | 55,565 |
| German Groups of Things | 0 | - | 4.46 | 38,547 |
| Capitals of German States | 0 | - | 4.74 | 29,002 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,417 |
| Germany True or False? | 0 | - | 4.61 | 48,916 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,193 |
| Ancient Greek Words | 0 | - | 4.93 | 112,030 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,900 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,316 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,539 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,364 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,504 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,502 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,739 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,308 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,180 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,864 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,740 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,745 |
| Top World Languages | 0 | - | 4.92 | 825,511 |
| Official Languages of South Africa | 0 | - | 4.57 | 26,198 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,652 |
| Australian Capitals | 0 | - | 4.92 | 62,774 |
| European Physical Geography | 0 | - | 4.26 | 33,549 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,324 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,037 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,843 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,589 |
| Romania Country Quiz | 0 | - | 4.63 | 53,948 |
| History of Austria | 0 | - | 4.70 | 17,923 |
| Geography of the French Empire | 0 | - | 4.45 | 27,167 |
| The French Revolution | 0 | - | 4.47 | 24,076 |
| France Multiple Choice | 0 | - | 4.39 | 40,781 |
| History of France | 0 | - | 4.61 | 57,341 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,935 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,341 |
| The Vikings! | 0 | - | 4.46 | 28,374 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,244 |
| The Portuguese Empire | 0 | - | 4.58 | 12,087 |
| American to British Word Translation | 0 | - | 4.14 | 139,392 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,204 |
| Champions League Top 4 | 0 | - | 4.77 | 137,536 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,040 |
| Asia Map Quiz | 0 | - | 4.99 | 920,527 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,212 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,902 |
| Countries by Official Language | 0 | - | 4.95 | 195,414 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,646 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,599 |
| Countries in their Native Language | 0 | - | 4.99 | 199,193 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,223 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,029 |
| Australia Map Quiz | 0 | - | 4.95 | 345,379 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,706 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,999 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,767 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,812 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,286 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,344 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,690 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,538 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,226 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,970 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,602 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,077 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,209 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,771 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,492 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,885 |
| European Geography A-Z | 0 | - | 4.29 | 49,385 |
| Country Codes of Europe | 0 | - | 3.43 | 13,764 |
| The Only European Country ... | 0 | - | 4.91 | 217,697 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,781 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,682 |
| Seas of Europe | 0 | - | 4.37 | 84,767 |
| European Geographic Groups of Four | 0 | - | 4.57 | 16,097 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,340 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,816 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,329 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,782 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,973 |
| Montenegro Country Quiz | 0 | - | 4.61 | 23,783 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,406 |
| Lithuania Country Quiz | 0 | - | 4.61 | 31,696 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,113 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,648 |
| Austria... or Australia? | 0 | - | 4.68 | 104,559 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,098 |
| Famous French People | 0 | - | 4.07 | 35,911 |
| Presidents of France | 0 | - | 4.25 | 24,234 |
| France A-Z | 0 | - | 4.16 | 38,280 |
| Word Chain - France | 0 | - | 4.38 | 42,865 |
