| European Countries by First 2 Letters | 0 | - | 4.95 | 532,292 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,459 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,678 |
| Official European Union Languages | 0 | - | 4.97 | 239,685 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,580 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,643 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,788 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,773 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,766 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,662 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,064 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,286 |
| Italian Foods | 0 | - | 4.30 | 73,228 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,040 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,668 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,525 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,495 |
| Celtic Nations | 0 | - | 4.61 | 47,085 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,094 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,981 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,559 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,510 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,673 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,413 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,232 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,503 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,160 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,441 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,410 |
| German Groups of Things | 0 | - | 4.47 | 38,623 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,614 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,667 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,719 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,735 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,483 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,915 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,341 |
| States of Germany | 0 | - | 4.95 | 154,335 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,652 |
| Regions of Italy | 0 | - | 4.92 | 76,968 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,763 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,238 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,708 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,834 |
| Champions League Winners | 0 | - | 4.92 | 1,015,349 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,045 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,558 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,053 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,875 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,470 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,377 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,807 |
| Departments of France | 0 | - | 4.93 | 55,065 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,727 |
| British to American Food Translation | 0 | - | 3.38 | 52,030 |
| England or Wales? | 0 | - | 4.94 | 45,944 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,980 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,269 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,644 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,731 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,357 |
| Name a Valid African Country | 0 | - | 4.98 | 154,968 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,738 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,873 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,718 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,277 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 120,796 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,066 |
| Slavic Languages | 0 | - | 4.68 | 54,672 |
| Word Chain - France | 0 | - | 4.38 | 42,925 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,727 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,613 |
| British Groups of Things | 0 | - | 4.26 | 83,000 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,099 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 337,806 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,899 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,000 |
| French Foods | 0 | - | 4.00 | 27,768 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,551 |
| Name that Greek Letter | 0 | - | 4.93 | 324,885 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,206 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,956 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,085 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,421 |
| American Foods | 0 | - | 3.66 | 39,434 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,580 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,948 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,783 |
| History of Russia Quiz | 0 | - | 4.47 | 31,999 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,864 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,544 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,331 |
| Word Chain - Germany | 0 | - | 4.31 | 22,678 |
| The Trojan War | 0 | - | 4.83 | 39,966 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,870 |
| History of Italy | 0 | - | 4.55 | 32,138 |
| Word Chain - Italy | 0 | - | 4.07 | 23,214 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,311 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,561 |
| Roman Emperors | 0 | - | 4.95 | 121,102 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,810 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,475 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,835 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,413 |
| Geography of Spain | 0 | - | 4.59 | 22,174 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,400 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,474 |
| Name a Valid English City | 0 | - | 4.19 | 16,815 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,563 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,443 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,264 |
| Countries That Produce the Most Spices | 0 | - | 4.44 | 41,679 |
| Countries that Produce the Most Cheese per Capita | 0 | - | 4.51 | 53,046 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 90,857 |
| Countries Which Eat the Most Beef | 0 | - | 4.46 | 50,384 |
| Countries by Milk Production | 0 | - | 4.54 | 44,209 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,385 |
| Australian Capitals | 0 | - | 4.92 | 62,826 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,929 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,209 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,514 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,770 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,819 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,224 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,929 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,438 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,660 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,381 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,833 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,269 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,515 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,712 |
| Capitals of French Regions | 0 | - | 4.45 | 16,173 |
| Regions of France | 0 | - | 4.70 | 121,986 |
| France Immigration by Country | 0 | - | 4.70 | 76,902 |
| Famous Germans | 0 | - | 4.50 | 55,766 |
| Capitals of German States | 0 | - | 4.74 | 29,064 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,529 |
| Germany True or False? | 0 | - | 4.61 | 49,005 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,434 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,544 |
| Ancient Greek Words | 0 | - | 4.93 | 112,396 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,323 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,713 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,203 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,398 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,561 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,201 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,731 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,652 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,720 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,355 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,086 |
| Countries That Eat the Most Pork | 0 | - | 4.18 | 39,415 |
| Countries that Produce the Most Cheese | 0 | - | 4.77 | 63,469 |
| Top 15 Countries with the Most Starbucks | 0 | - | 4.51 | 81,487 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,862 |
| Word Chain - Australia | 0 | - | 4.38 | 38,241 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,721 |
| European Physical Geography | 0 | - | 4.26 | 33,588 |
| Geography of Russia | 0 | - | 4.57 | 21,594 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,113 |
| History of Austria | 0 | - | 4.70 | 17,969 |
| Geography of the French Empire | 0 | - | 4.45 | 27,210 |
| The French Revolution | 0 | - | 4.47 | 24,138 |
| France Multiple Choice | 0 | - | 4.39 | 40,834 |
| History of France | 0 | - | 4.61 | 57,570 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,556 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,584 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,487 |
| The Vikings! | 0 | - | 4.46 | 28,400 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,363 |
| The Portuguese Empire | 0 | - | 4.58 | 12,101 |
| American to British Word Translation | 0 | - | 4.14 | 139,649 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,046 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,340 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,799 |
| Champions League Top 4 | 0 | - | 4.78 | 138,847 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,113 |
| Asia Map Quiz | 0 | - | 4.99 | 924,529 |
| Sushi Translation | 0 | - | 4.08 | 13,981 |
| Africa Map Quiz | 0 | - | 5.00 | 2,127,855 |
| Countries that Eat the Most Meat | 0 | - | 4.23 | 42,487 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,130 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,408 |
| Australia Map Quiz | 0 | - | 4.95 | 346,056 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,850 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,926 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,876 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,477 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,402 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,807 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,886 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,631 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,094 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,882 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,198 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,979 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,700 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,375 |
