| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,498 |
| Official European Union Languages | 0 | - | 4.97 | 239,304 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,345 |
| Slavic Languages | 0 | - | 4.68 | 54,569 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,428 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,560 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,942 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,188 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,978 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,561 |
| History of Russia Quiz | 0 | - | 4.47 | 31,977 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,821 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,603 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,896 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,427 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,462 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,825 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,940 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,511 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,840 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,577 |
| Slavic Countries | 0 | - | 4.96 | 112,106 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,573 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,303 |
| Champions League Winners | 0 | - | 4.92 | 1,012,214 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,817 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,665 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,823 |
| Celtic Nations | 0 | - | 4.69 | 47,047 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,389 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,547 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,934 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,609 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,559 |
| Geography of Russia | 0 | - | 4.57 | 21,570 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,279 |
| States of Germany | 0 | - | 4.95 | 153,819 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,467 |
| Regions of Italy | 0 | - | 4.92 | 76,548 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,592 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,865 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,540 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,001 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,792 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,667 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,723 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,870 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,980 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,212 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,987 |
| Departments of France | 0 | - | 4.93 | 54,750 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,672 |
| England or Wales? | 0 | - | 4.94 | 45,869 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,466 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,684 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,695 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,098 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,115 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,525 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,384 |
| The Trojan War | 0 | - | 4.83 | 39,904 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,216 |
| Name that Greek Letter | 0 | - | 4.93 | 324,515 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,561 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,696 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,401 |
| Roman Emperors | 0 | - | 4.95 | 120,738 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,573 |
| Languages of Spain | 0 | - | 4.36 | 23,380 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 221,523 |
| Word Chain - Russia | 0 | - | 4.33 | 15,780 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,671 |
| Ancient Greek Words | 0 | - | 4.93 | 112,156 |
| History of Italy | 0 | - | 4.55 | 32,099 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,140 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,763 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,361 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,640 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,432 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 32,617 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,365 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,749 |
| European Geography By Letter - C | 0 | - | 4.46 | 119,635 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,723 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,312 |
| European Geography By Letter - M | 0 | - | 4.69 | 131,793 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,679 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,218 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,455 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,093 |
| Europe Map Quiz | 0 | - | 5.00 | 4,777,990 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,427 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,083 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,380 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,348 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,070 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,381 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,614 |
| Capitals of French Regions | 0 | - | 4.45 | 16,144 |
| Regions of France | 0 | - | 4.70 | 121,606 |
| France Immigration by Country | 0 | - | 4.70 | 76,793 |
| Famous Germans | 0 | - | 4.50 | 55,623 |
| German Groups of Things | 0 | - | 4.47 | 38,576 |
| Capitals of German States | 0 | - | 4.74 | 29,030 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,453 |
| Germany True or False? | 0 | - | 4.61 | 48,944 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,281 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,003 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,732 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,379 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,586 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,371 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,588 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,526 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,759 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,164 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,918 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,010 |
| Top World Languages | 0 | - | 4.92 | 826,728 |
| Official Languages of South Africa | 0 | - | 4.57 | 26,206 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,246 |
| Australian Capitals | 0 | - | 4.92 | 62,791 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,519 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,556 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,879 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,712 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,410 |
| European Geography By Letter - I | 0 | - | 4.09 | 96,121 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,765 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,202 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,300 |
| European Physical Geography | 0 | - | 4.26 | 33,565 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,812 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,577 |
| European Geography A-Z | 0 | - | 4.29 | 49,416 |
| European Geographic Groups of Four | 0 | - | 4.60 | 19,140 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,339 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,055 |
| Latvia Country Quiz | 0 | - | 4.77 | 32,145 |
| History of Austria | 0 | - | 4.70 | 17,944 |
| Austria... or Australia? | 0 | - | 4.68 | 104,618 |
| Famous French People | 0 | - | 4.07 | 35,958 |
| Geography of the French Empire | 0 | - | 4.45 | 27,187 |
| Word Chain - France | 0 | - | 4.38 | 42,887 |
| The French Revolution | 0 | - | 4.47 | 24,098 |
| France Multiple Choice | 0 | - | 4.39 | 40,797 |
| History of France | 0 | - | 4.61 | 57,421 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,533 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,158 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,986 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,182 |
| Italian Foods | 0 | - | 4.30 | 73,081 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,529 |
| The Mafia Quiz | 0 | - | 4.46 | 23,401 |
| Byzantine History | 0 | - | 4.91 | 28,970 |
| Byzantine Emperors | 0 | - | 4.92 | 14,467 |
| History of The Netherlands | 0 | - | 4.46 | 17,512 |
| The Vikings! | 0 | - | 4.46 | 28,386 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,286 |
| The Portuguese Empire | 0 | - | 4.58 | 12,090 |
| Canary Islands | 0 | - | 4.62 | 17,505 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,411 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,929 |
| American to British Word Translation | 0 | - | 4.14 | 139,484 |
| British Spellings | 0 | - | 4.06 | 99,541 |
| British Groups of Things | 0 | - | 4.25 | 82,957 |
| British Acronyms | 0 | - | 4.40 | 45,889 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,079 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,238 |
| British Monopoly Board | 0 | - | 4.52 | 41,226 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,039 |
| Geography of Scotland | 0 | - | 4.63 | 21,699 |
| Champions League Top 4 | 0 | - | 4.77 | 137,957 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,735 |
| Asia Map Quiz | 0 | - | 4.99 | 922,149 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,272 |
| Africa Map Quiz | 0 | - | 5.00 | 2,124,990 |
| Countries by Official Language | 0 | - | 4.95 | 195,571 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,873 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,839 |
| Countries in their Native Language | 0 | - | 4.99 | 199,351 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,370 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,128 |
| Australian States and Territories | 0 | - | 4.96 | 142,505 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,423 |
| Australia Map Quiz | 0 | - | 4.95 | 345,607 |
| Australia True or False | 0 | - | 4.87 | 57,031 |
| Flags of North and South America | 0 | - | 4.99 | 375,399 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,829 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,583 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,329 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,370 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,690 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,068 |
| North America Map Quiz | 0 | - | 4.98 | 250,292 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,760 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,727 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,259 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,809 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,032 |
