| European Countries by First 2 Letters | 0 | - | 4.95 | 531,999 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,134 |
| History of Russia Quiz | 0 | - | 4.47 | 31,993 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,840 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,612 |
| Official European Union Languages | 0 | - | 4.97 | 239,541 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,516 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,409 |
| Geography of Russia | 0 | - | 4.57 | 21,585 |
| Slavic Languages | 0 | - | 4.68 | 54,637 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,253 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,016 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,482 |
| Celtic Nations | 0 | - | 4.61 | 47,072 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,929 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,334 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,220 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,009 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,677 |
| Slavic Countries | 0 | - | 4.96 | 112,237 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,643 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,377 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,557 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,608 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,660 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,711 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,362 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,799 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,125 |
| Word Chain - Russia | 0 | - | 4.33 | 15,786 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,372 |
| States of Germany | 0 | - | 4.95 | 154,153 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,587 |
| Regions of Italy | 0 | - | 4.92 | 76,795 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,696 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,121 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,656 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,816 |
| Champions League Winners | 0 | - | 4.92 | 1,014,213 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,713 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,709 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,191 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,407 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,325 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,590 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,560 |
| Departments of France | 0 | - | 4.93 | 54,929 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,716 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,717 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,600 |
| England or Wales? | 0 | - | 4.94 | 45,914 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,774 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,837 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,028 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,419 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,131 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,705 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,350 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,042 |
| Name that Greek Letter | 0 | - | 4.93 | 324,765 |
| History of Italy | 0 | - | 4.55 | 32,118 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,243 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,792 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,402 |
| Europe Map Quiz | 0 | - | 5.00 | 4,782,572 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,465 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,679 |
| Famous Russians | 0 | - | 4.16 | 23,899 |
| Capitals of French Regions | 0 | - | 4.45 | 16,159 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,622 |
| Capitals of German States | 0 | - | 4.74 | 29,047 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,512 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,478 |
| The Trojan War | 0 | - | 4.83 | 39,945 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,770 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,520 |
| Roman Emperors | 0 | - | 4.95 | 120,986 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,548 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,391 |
| Australian Capitals | 0 | - | 4.92 | 62,812 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,725 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,101 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,213 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,109 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,760 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,117 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,878 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,396 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,613 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,324 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,465 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,125 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,416 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,385 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,228 |
| Regions of France | 0 | - | 4.70 | 121,858 |
| France Immigration by Country | 0 | - | 4.70 | 76,857 |
| Famous Germans | 0 | - | 4.50 | 55,718 |
| German Groups of Things | 0 | - | 4.47 | 38,611 |
| Germany True or False? | 0 | - | 4.61 | 48,979 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,379 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,236 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,267 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,661 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,388 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,695 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,445 |
| Asia Map Quiz | 0 | - | 4.99 | 923,731 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,760 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,333 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,597 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,864 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,439 |
| European Physical Geography | 0 | - | 4.26 | 33,581 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,836 |
| Country Codes of Europe | 0 | - | 3.43 | 13,796 |
| The Only European Country ... | 0 | - | 4.91 | 218,547 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,261 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,089 |
| History of Austria | 0 | - | 4.70 | 17,962 |
| Presidents of France | 0 | - | 4.25 | 24,312 |
| Geography of the French Empire | 0 | - | 4.45 | 27,202 |
| The French Revolution | 0 | - | 4.47 | 24,124 |
| France Multiple Choice | 0 | - | 4.39 | 40,822 |
| History of France | 0 | - | 4.61 | 57,509 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,549 |
| Ancient Greek Words | 0 | - | 4.93 | 112,304 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,442 |
| The Vikings! | 0 | - | 4.46 | 28,397 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,332 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,103 |
| American to British Word Translation | 0 | - | 4.14 | 139,579 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,031 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,299 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,779 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,016 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,652 |
| Champions League Top 4 | 0 | - | 4.77 | 138,491 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,774 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,687 |
| African East Coast | 0 | - | 4.96 | 96,621 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,473 |
| Australia Map Quiz | 0 | - | 4.95 | 345,902 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,864 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,891 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,830 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,142 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,935 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,640 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,330 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,965 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,381 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,434 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,844 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,719 |
| European Geography A-Z | 0 | - | 4.29 | 49,447 |
| European Geographic Groups of Four | 0 | - | 4.55 | 19,830 |
| Austria... or Australia? | 0 | - | 4.68 | 104,698 |
| Famous French People | 0 | - | 4.07 | 36,032 |
| Word Chain - France | 0 | - | 4.38 | 42,908 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,195 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,019 |
| Italian Foods | 0 | - | 4.30 | 73,176 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,589 |
| The Mafia Quiz | 0 | - | 4.46 | 23,418 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,284 |
| History of The Netherlands | 0 | - | 4.46 | 17,536 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,002 |
| British Spellings | 0 | - | 4.06 | 99,577 |
| British Groups of Things | 0 | - | 4.25 | 82,984 |
| British Acronyms | 0 | - | 4.40 | 45,912 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,090 |
| British Monopoly Board | 0 | - | 4.52 | 41,248 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,069 |
| Geography of Scotland | 0 | - | 4.63 | 21,714 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,570 |
| Countries of Africa | 0 | - | 5.00 | 2,554,895 |
| Australian States and Territories | 0 | - | 4.96 | 142,704 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,455 |
| Australia True or False | 0 | - | 4.87 | 57,095 |
| Flags of North and South America | 0 | - | 4.99 | 376,189 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,891 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,678 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,490 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,848 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,726 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,029,651 |
| North America Map Quiz | 0 | - | 4.98 | 251,087 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,938 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,490 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,517 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,488 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,120 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,889 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,223 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,352 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,897 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,392 |
