| European Countries by First 2 Letters | 0 | - | 4.95 | 532,158 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,263 |
| History of Russia Quiz | 0 | - | 4.47 | 31,995 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,849 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,644 |
| Official European Union Languages | 0 | - | 4.97 | 239,609 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,544 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,528 |
| Geography of Russia | 0 | - | 4.57 | 21,587 |
| Slavic Languages | 0 | - | 4.68 | 54,658 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,267 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,027 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,488 |
| Celtic Nations | 0 | - | 4.61 | 47,081 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,951 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,444 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,341 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,057 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,703 |
| Slavic Countries | 0 | - | 4.96 | 112,280 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,668 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,389 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,868 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,623 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,687 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,719 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,409 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,851 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,231 |
| Word Chain - Russia | 0 | - | 4.33 | 15,789 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,404 |
| States of Germany | 0 | - | 4.95 | 154,252 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,618 |
| Regions of Italy | 0 | - | 4.92 | 76,915 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,735 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,161 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,677 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,822 |
| Champions League Winners | 0 | - | 4.92 | 1,014,724 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,476 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,685 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,663 |
| Departments of France | 0 | - | 4.93 | 54,971 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,721 |
| England or Wales? | 0 | - | 4.94 | 45,927 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,862 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,722 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,714 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,217 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 118,635 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,722 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,606 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,861 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,354 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,038 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,231 |
| Name that Greek Letter | 0 | - | 4.93 | 324,820 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,739 |
| Famous Russians | 0 | - | 4.16 | 23,901 |
| Russian Inventions | 0 | - | 4.39 | 13,010 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,643 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,504 |
| The Trojan War | 0 | - | 4.83 | 39,951 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,808 |
| History of Italy | 0 | - | 4.55 | 32,129 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,276 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,542 |
| Roman Emperors | 0 | - | 4.95 | 121,060 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,800 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,408 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,488 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,214 |
| Australian Capitals | 0 | - | 4.92 | 62,818 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,745 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,118 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,341 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,121 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,773 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,152 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,893 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,412 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,627 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,348 |
| Europe Map Quiz | 0 | - | 5.00 | 4,783,999 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,476 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,138 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,422 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,394 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,245 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,489 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,700 |
| Capitals of French Regions | 0 | - | 4.45 | 16,163 |
| Regions of France | 0 | - | 4.70 | 121,902 |
| France Immigration by Country | 0 | - | 4.70 | 76,876 |
| Famous Germans | 0 | - | 4.50 | 55,742 |
| German Groups of Things | 0 | - | 4.47 | 38,615 |
| Capitals of German States | 0 | - | 4.74 | 29,056 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,522 |
| Germany True or False? | 0 | - | 4.61 | 48,991 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,413 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,365 |
| Ancient Greek Words | 0 | - | 4.93 | 112,347 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,316 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,292 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,689 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,392 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,722 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,555 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,793 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,101 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,686 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,616 |
| European Physical Geography | 0 | - | 4.26 | 33,586 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,101 |
| History of Austria | 0 | - | 4.70 | 17,965 |
| Geography of the French Empire | 0 | - | 4.45 | 27,202 |
| The French Revolution | 0 | - | 4.47 | 24,130 |
| France Multiple Choice | 0 | - | 4.39 | 40,827 |
| History of France | 0 | - | 4.61 | 57,539 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,551 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,434 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,470 |
| The Vikings! | 0 | - | 4.46 | 28,398 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,350 |
| The Portuguese Empire | 0 | - | 4.58 | 12,097 |
| American to British Word Translation | 0 | - | 4.14 | 139,610 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,038 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,316 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,786 |
| Champions League Top 4 | 0 | - | 4.77 | 138,659 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,596 |
| Asia Map Quiz | 0 | - | 4.99 | 924,116 |
| Africa Map Quiz | 0 | - | 5.00 | 2,127,284 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,366 |
| Australia Map Quiz | 0 | - | 4.95 | 345,981 |
| United States Map Quiz | 0 | - | 4.98 | 4,169,528 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,685 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,877 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,524 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,982 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,837 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,152 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,942 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,653 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,342 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,971 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,389 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,440 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,854 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,728 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,911 |
| European Geography A-Z | 0 | - | 4.29 | 49,454 |
| Country Codes of Europe | 0 | - | 3.43 | 13,801 |
| The Only European Country ... | 0 | - | 4.91 | 218,663 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,344 |
| European Geographic Groups of Four | 0 | - | 4.55 | 19,973 |
| Austria... or Australia? | 0 | - | 4.68 | 104,726 |
| Famous French People | 0 | - | 4.07 | 36,049 |
| Presidents of France | 0 | - | 4.25 | 24,316 |
| Word Chain - France | 0 | - | 4.38 | 42,915 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,204 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,023 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,941 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,605 |
| Italian Foods | 0 | - | 4.30 | 73,199 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,606 |
| The Mafia Quiz | 0 | - | 4.46 | 23,425 |
| History of The Netherlands | 0 | - | 4.46 | 17,539 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,104 |
| Canary Islands | 0 | - | 4.62 | 17,515 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,015 |
| British Spellings | 0 | - | 4.06 | 99,583 |
| British Groups of Things | 0 | - | 4.25 | 82,988 |
| British Acronyms | 0 | - | 4.40 | 45,918 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,095 |
| British Monopoly Board | 0 | - | 4.52 | 41,253 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,079 |
| Geography of Scotland | 0 | - | 4.63 | 21,721 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,819 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,743 |
| Countries of Africa | 0 | - | 5.00 | 2,556,029 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,730 |
| African East Coast | 0 | - | 4.96 | 96,660 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,500 |
| Australian States and Territories | 0 | - | 4.96 | 142,746 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,473 |
| Australia True or False | 0 | - | 4.87 | 57,105 |
| Flags of North and South America | 0 | - | 4.99 | 376,371 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,913 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,713 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,525 |
| South America Map Quiz | 0 | - | 5.00 | 1,555,418 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,738 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,030,126 |
| North America Map Quiz | 0 | - | 4.98 | 251,265 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,947 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,678 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,087 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,507 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,132 |
