| European Countries by First 2 Letters | 0 | - | 4.95 | 532,847 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,208 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,816 |
| Official European Union Languages | 0 | - | 4.97 | 240,028 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,764 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,232 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,909 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,165 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,200 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,130 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,362 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,138 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,085 |
| Italian Foods | 0 | - | 4.30 | 73,340 |
| Celtic Nations | 0 | - | 4.61 | 47,118 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,525 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,733 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,101 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,028 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,286 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,727 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,500 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,311 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,554 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,225 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,491 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,452 |
| German Groups of Things | 0 | - | 4.47 | 38,654 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,740 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,069 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,855 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,792 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 89,030 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,105 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,814 |
| States of Germany | 0 | - | 4.95 | 154,811 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,767 |
| Regions of Italy | 0 | - | 4.92 | 77,207 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,869 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,498 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,853 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,851 |
| Champions League Winners | 0 | - | 4.92 | 1,017,332 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,223 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,608 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,159 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,999 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,677 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,764 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,922 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,733 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,408 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,436 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,390 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,119 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,042 |
| Slavic Languages | 0 | - | 4.67 | 54,753 |
| Departments of France | 0 | - | 4.93 | 55,327 |
| Word Chain - France | 0 | - | 4.38 | 42,950 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,752 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,765 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,657 |
| British Groups of Things | 0 | - | 4.26 | 83,034 |
| British to American Food Translation | 0 | - | 3.38 | 52,058 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,123 |
| England or Wales? | 0 | - | 4.94 | 46,000 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,358 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,483 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,854 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,895 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,534 |
| Name a Valid African Country | 0 | - | 4.98 | 155,176 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 338,179 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,015 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,208 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,901 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,585 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,958 |
| History of Russia Quiz | 0 | - | 4.47 | 32,013 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,892 |
| French Foods | 0 | - | 4.00 | 27,786 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,603 |
| Name that Greek Letter | 0 | - | 4.93 | 325,167 |
| History of Italy | 0 | - | 4.55 | 32,169 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,463 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,839 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,347 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,456 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,003 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,099 |
| Countries That Produce the Most Spices | 0 | - | 4.44 | 41,709 |
| Countries that Produce the Most Cheese per Capita | 0 | - | 4.51 | 53,103 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 91,065 |
| Countries Which Eat the Most Beef | 0 | - | 4.46 | 50,421 |
| Countries by Milk Production | 0 | - | 4.54 | 44,273 |
| American Foods | 0 | - | 3.66 | 39,450 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,817 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,078 |
| Europe Map Quiz | 0 | - | 5.00 | 4,791,552 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,595 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,777 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,707 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,374 |
| Capitals of French Regions | 0 | - | 4.45 | 16,191 |
| Capitals of German States | 0 | - | 4.74 | 29,087 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,573 |
| Word Chain - Germany | 0 | - | 4.31 | 22,693 |
| The Trojan War | 0 | - | 4.83 | 40,033 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,105 |
| Word Chain - Italy | 0 | - | 4.07 | 23,227 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,652 |
| Roman Emperors | 0 | - | 4.95 | 121,357 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,492 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,953 |
| Geography of Spain | 0 | - | 4.59 | 22,210 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,420 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,521 |
| Name a Valid English City | 0 | - | 4.19 | 16,836 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,538 |
| Countries That Eat the Most Pork | 0 | - | 4.18 | 39,454 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,990 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,448 |
| Australian Capitals | 0 | - | 4.92 | 62,854 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,316 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,719 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,221 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,599 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,245 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,749 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,266 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,874 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,151 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,757 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,545 |
| Regions of France | 0 | - | 4.70 | 122,284 |
| France Immigration by Country | 0 | - | 4.70 | 76,982 |
| Famous Germans | 0 | - | 4.50 | 55,844 |
| Germany True or False? | 0 | - | 4.61 | 49,052 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,550 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,187 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,493 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,880 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,274 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,426 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,138 |
| Asia Map Quiz | 0 | - | 4.99 | 926,223 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,678 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,757 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,374 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,108 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,107 |
| Countries that Produce the Most Cheese | 0 | - | 4.77 | 63,523 |
| Top 15 Countries with the Most Starbucks | 0 | - | 4.51 | 81,597 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,559 |
| Word Chain - Australia | 0 | - | 4.38 | 38,257 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,784 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,217 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,970 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,095 |
| European Physical Geography | 0 | - | 4.26 | 33,610 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,399 |
| Country Codes of Europe | 0 | - | 3.45 | 13,841 |
| The Only European Country ... | 0 | - | 4.91 | 219,413 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,745 |
| Geography of Russia | 0 | - | 4.57 | 21,614 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,150 |
| History of Austria | 0 | - | 4.70 | 17,988 |
| Presidents of France | 0 | - | 4.25 | 24,361 |
| Geography of the French Empire | 0 | - | 4.45 | 27,225 |
| The French Revolution | 0 | - | 4.47 | 24,159 |
| France Multiple Choice | 0 | - | 4.39 | 40,868 |
| History of France | 0 | - | 4.61 | 57,690 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,569 |
| Ancient Greek Words | 0 | - | 4.93 | 112,602 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,571 |
| The Vikings! | 0 | - | 4.46 | 28,419 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,419 |
| The Portuguese Empire | 0 | - | 4.58 | 12,116 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,129 |
| American to British Word Translation | 0 | - | 4.14 | 139,783 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,083 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,410 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,834 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,579 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,935 |
| Champions League Top 4 | 0 | - | 4.78 | 139,422 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,083 |
| Sushi Translation | 0 | - | 4.08 | 13,994 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,187 |
| African East Coast | 0 | - | 4.96 | 96,885 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,757 |
| Cities with the Most Michelin Stars | 0 | - | 4.33 | 24,674 |
| Countries that Eat the Most Meat | 0 | - | 4.23 | 42,512 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,144 |
| Australia Map Quiz | 0 | - | 4.95 | 346,403 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,869 |
| South American Geography Quiz #2 | 0 | - | 4.40 | 44,291 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,925 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,899 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,475 |
