| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,449 |
| Official European Union Languages | 0 | - | 4.97 | 239,188 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,289 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,167 |
| Slavic Languages | 0 | - | 4.68 | 54,544 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,247 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,719 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,170 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,956 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,498 |
| History of Russia Quiz | 0 | - | 4.47 | 31,975 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,805 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,854 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,391 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,457 |
| Celtic Nations | 0 | - | 4.69 | 47,035 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,775 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,812 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,140 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,762 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,528 |
| Slavic Countries | 0 | - | 4.96 | 112,040 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,546 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,277 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,165 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,777 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,646 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,740 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,247 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,506 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,624 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,521 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,406 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,234 |
| States of Germany | 0 | - | 4.95 | 153,662 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,408 |
| Regions of Italy | 0 | - | 4.92 | 76,480 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,541 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,758 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,513 |
| Champions League Winners | 0 | - | 4.92 | 1,011,504 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,650 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| Languages of the United Kingdom | 0 | - | 4.14 | 40,985 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,778 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,670 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,838 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,080 |
| Departments of France | 0 | - | 4.93 | 54,683 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,657 |
| England or Wales? | 0 | - | 4.94 | 45,847 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,330 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,677 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,686 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,995 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,954 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,708 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,958 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,875 |
| Name that Greek Letter | 0 | - | 4.93 | 324,427 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,690 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,555 |
| Languages of Spain | 0 | - | 4.36 | 23,373 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 221,319 |
| Word Chain - Russia | 0 | - | 4.33 | 15,779 |
| The Trojan War | 0 | - | 4.83 | 39,885 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,483 |
| History of Italy | 0 | - | 4.55 | 32,092 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,092 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,304 |
| Roman Emperors | 0 | - | 4.95 | 120,653 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,754 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,340 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,989 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 32,605 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,826 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,129 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,545 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,914 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,460 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,133 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,546 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,367 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,124 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,374 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,966 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,947 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,408 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,065 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,356 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,329 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,982 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,358 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,595 |
| Capitals of French Regions | 0 | - | 4.45 | 16,137 |
| Regions of France | 0 | - | 4.70 | 121,501 |
| France Immigration by Country | 0 | - | 4.70 | 76,756 |
| Famous Germans | 0 | - | 4.50 | 55,597 |
| German Groups of Things | 0 | - | 4.47 | 38,562 |
| Capitals of German States | 0 | - | 4.74 | 29,020 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,442 |
| Germany True or False? | 0 | - | 4.61 | 48,930 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,238 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,420 |
| Ancient Greek Words | 0 | - | 4.93 | 112,089 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,949 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,571 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,368 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,556 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,490 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,263 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,876 |
| Top World Languages | 0 | - | 4.92 | 826,111 |
| Official Languages of South Africa | 0 | - | 4.57 | 26,204 |
| Oceania Map Quiz | 0 | - | 4.98 | 656,616 |
| Australian Capitals | 0 | - | 4.92 | 62,782 |
| European Physical Geography | 0 | - | 4.26 | 33,560 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,042 |
| History of Austria | 0 | - | 4.70 | 17,928 |
| Geography of the French Empire | 0 | - | 4.45 | 27,179 |
| The French Revolution | 0 | - | 4.47 | 24,088 |
| France Multiple Choice | 0 | - | 4.39 | 40,792 |
| History of France | 0 | - | 4.61 | 57,379 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,528 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,535 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,349 |
| The Vikings! | 0 | - | 4.46 | 28,382 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,265 |
| The Portuguese Empire | 0 | - | 4.58 | 12,088 |
| American to British Word Translation | 0 | - | 4.14 | 139,441 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,220 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,748 |
| Champions League Top 4 | 0 | - | 4.77 | 137,762 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,367 |
| Asia Map Quiz | 0 | - | 4.99 | 921,438 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,238 |
| Africa Map Quiz | 0 | - | 5.00 | 2,123,866 |
| Countries by Official Language | 0 | - | 4.95 | 195,493 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,750 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,713 |
| Countries in their Native Language | 0 | - | 4.99 | 199,275 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,300 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,083 |
| Australia Map Quiz | 0 | - | 4.95 | 345,506 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,566 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,127 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,794 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,974 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,413 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,369 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,712 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,570 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,252 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,997 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,625 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,106 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,228 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,790 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,505 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,380 |
| European Geography A-Z | 0 | - | 4.29 | 49,397 |
| Country Codes of Europe | 0 | - | 3.43 | 13,768 |
| The Only European Country ... | 0 | - | 4.91 | 217,900 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,913 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,329 |
| Austria... or Australia? | 0 | - | 4.68 | 104,590 |
| Famous French People | 0 | - | 4.07 | 35,940 |
| Presidents of France | 0 | - | 4.25 | 24,258 |
| Word Chain - France | 0 | - | 4.38 | 42,874 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,136 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,979 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,064 |
| Italian Foods | 0 | - | 4.30 | 73,041 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,500 |
| The Mafia Quiz | 0 | - | 4.46 | 23,397 |
| History of The Netherlands | 0 | - | 4.46 | 17,503 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,088 |
| Canary Islands | 0 | - | 4.62 | 17,503 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,307 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,898 |
| British Spellings | 0 | - | 4.06 | 99,532 |
| British Groups of Things | 0 | - | 4.25 | 82,945 |
| British Acronyms | 0 | - | 4.40 | 45,880 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,071 |
| British Monopoly Board | 0 | - | 4.52 | 41,217 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,009 |
| Geography of Scotland | 0 | - | 4.63 | 21,691 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,549 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,554 |
| Countries of Africa | 0 | - | 5.00 | 2,549,206 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,431 |
| African East Coast | 0 | - | 4.96 | 96,437 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,306 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,553 |
| Top World Languages A-Z | 0 | - | 4.83 | 36,830 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,541 |
| German-Speaking Countries | 0 | - | 4.92 | 145,851 |
| Italian Name Translation | 0 | - | 4.83 | 47,469 |
| French-Speaking Countries | 0 | - | 4.85 | 271,129 |
| Spanish to English Country Names | 0 | - | 4.86 | 33,532 |
