| European Countries by First 2 Letters | 0 | - | 4.95 | 531,801 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,969 |
| History of Russia Quiz | 0 | - | 4.47 | 31,987 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,835 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,590 |
| Official European Union Languages | 0 | - | 4.97 | 239,471 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,478 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,274 |
| Geography of Russia | 0 | - | 4.57 | 21,577 |
| Slavic Languages | 0 | - | 4.68 | 54,622 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,233 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,005 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,475 |
| Celtic Nations | 0 | - | 4.61 | 47,068 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,897 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,235 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,060 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,962 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,651 |
| Slavic Countries | 0 | - | 4.96 | 112,198 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,629 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,346 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,242 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,578 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,628 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,698 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,309 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,732 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,980 |
| Word Chain - Russia | 0 | - | 4.33 | 15,786 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,340 |
| States of Germany | 0 | - | 4.95 | 154,057 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,554 |
| Regions of Italy | 0 | - | 4.92 | 76,743 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,665 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,054 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,625 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,811 |
| Champions League Winners | 0 | - | 4.92 | 1,013,552 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,196 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,498 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,478 |
| Departments of France | 0 | - | 4.93 | 54,885 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,707 |
| England or Wales? | 0 | - | 4.94 | 45,901 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,690 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,710 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,700 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,162 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,304 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,709 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,592 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,802 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,349 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,015 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,815 |
| Name that Greek Letter | 0 | - | 4.93 | 324,711 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,652 |
| Famous Russians | 0 | - | 4.16 | 23,893 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,589 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,450 |
| The Trojan War | 0 | - | 4.83 | 39,937 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,700 |
| History of Italy | 0 | - | 4.55 | 32,113 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,217 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,498 |
| Roman Emperors | 0 | - | 4.95 | 120,926 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,785 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,387 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,335 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,063 |
| Australian Capitals | 0 | - | 4.92 | 62,806 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,690 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,071 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,026 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,079 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,738 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,081 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,864 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,380 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,594 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,289 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,300 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,458 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,111 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,409 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,370 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,211 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,436 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,658 |
| Capitals of French Regions | 0 | - | 4.45 | 16,156 |
| Regions of France | 0 | - | 4.70 | 121,783 |
| France Immigration by Country | 0 | - | 4.70 | 76,839 |
| Famous Germans | 0 | - | 4.50 | 55,689 |
| German Groups of Things | 0 | - | 4.47 | 38,603 |
| Capitals of German States | 0 | - | 4.74 | 29,038 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,504 |
| Germany True or False? | 0 | - | 4.61 | 48,969 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,353 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,069 |
| Ancient Greek Words | 0 | - | 4.93 | 112,271 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,224 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,645 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,383 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,663 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,541 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,918 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,581 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,058 |
| European Physical Geography | 0 | - | 4.26 | 33,574 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,081 |
| History of Austria | 0 | - | 4.70 | 17,955 |
| Geography of the French Empire | 0 | - | 4.45 | 27,198 |
| The French Revolution | 0 | - | 4.47 | 24,117 |
| France Multiple Choice | 0 | - | 4.39 | 40,813 |
| History of France | 0 | - | 4.61 | 57,483 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,545 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,134 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,417 |
| The Vikings! | 0 | - | 4.46 | 28,394 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,318 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| American to British Word Translation | 0 | - | 4.14 | 139,552 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,026 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,280 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,772 |
| Champions League Top 4 | 0 | - | 4.77 | 138,324 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,177 |
| Asia Map Quiz | 0 | - | 4.99 | 923,242 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,271 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,297 |
| Australia Map Quiz | 0 | - | 4.95 | 345,818 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,134 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,495 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,847 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,328 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,777 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,810 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,115 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,919 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,625 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,314 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,951 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,363 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,418 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,832 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,708 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,775 |
| European Geography A-Z | 0 | - | 4.29 | 49,438 |
| Country Codes of Europe | 0 | - | 3.43 | 13,787 |
| The Only European Country ... | 0 | - | 4.91 | 218,430 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,192 |
| European Geographic Groups of Four | 0 | - | 4.54 | 19,706 |
| Austria... or Australia? | 0 | - | 4.68 | 104,670 |
| Famous French People | 0 | - | 4.07 | 36,014 |
| Presidents of France | 0 | - | 4.25 | 24,303 |
| Word Chain - France | 0 | - | 4.38 | 42,900 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,177 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,008 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,925 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,415 |
| Italian Foods | 0 | - | 4.30 | 73,151 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,566 |
| The Mafia Quiz | 0 | - | 4.46 | 23,413 |
| History of The Netherlands | 0 | - | 4.46 | 17,530 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,094 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,972 |
| British Spellings | 0 | - | 4.06 | 99,567 |
| British Groups of Things | 0 | - | 4.25 | 82,976 |
| British Acronyms | 0 | - | 4.40 | 45,904 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,087 |
| British Monopoly Board | 0 | - | 4.52 | 41,241 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,058 |
| Geography of Scotland | 0 | - | 4.63 | 21,706 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,702 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,328 |
| Countries of Africa | 0 | - | 5.00 | 2,553,566 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,645 |
| African East Coast | 0 | - | 4.96 | 96,584 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,431 |
| Australian States and Territories | 0 | - | 4.96 | 142,646 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,450 |
| Australia True or False | 0 | - | 4.87 | 57,076 |
| Flags of North and South America | 0 | - | 4.99 | 375,970 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,874 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,656 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,418 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,255 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,715 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,029,121 |
| North America Map Quiz | 0 | - | 4.98 | 250,886 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,928 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,270 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,279 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,474 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,096 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,180 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,911 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,309 |
