| European Countries by First 2 Letters | 0 | - | 4.95 | 526,316 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,440 |
| History of Russia Quiz | 0 | - | 4.49 | 31,789 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,563 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,576 |
| Official European Union Languages | 0 | - | 4.97 | 236,511 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,696 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,179 |
| Geography of Russia | 0 | - | 4.57 | 21,427 |
| Slavic Languages | 0 | - | 4.67 | 53,975 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,535 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,565 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,238 |
| Celtic Nations | 0 | - | 4.69 | 46,811 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,843 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,807 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,859 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,247 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,194 |
| Slavic Countries | 0 | - | 4.96 | 110,848 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,046 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,864 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,325 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,209 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,142 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,232 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,775 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,955 |
| Word Chain - Russia | 0 | - | 4.33 | 15,685 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,190 |
| States of Germany | 0 | - | 4.96 | 150,024 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,005 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,517 |
| Regions of Italy | 0 | - | 4.92 | 74,696 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,804 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,319 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,140 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,405 |
| Champions League Winners | 0 | - | 4.92 | 996,242 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,448 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,598 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,981 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,029 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,505 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,190 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,149 |
| Departments of France | 0 | - | 4.93 | 52,800 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,428 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,364 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,244 |
| England or Wales? | 0 | - | 4.94 | 45,309 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,482 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,514 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,787 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,512 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,091 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,121 |
| Embarrassing Chapters in Russian History | 0 | - | 3.73 | 20,235 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,826 |
| Name that Greek Letter | 0 | - | 4.94 | 321,638 |
| History of Italy | 0 | - | 4.55 | 31,813 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,157 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,479 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,979 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,964 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,146 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,608 |
| Famous Russians | 0 | - | 4.16 | 23,727 |
| Capitals of French Regions | 0 | - | 4.45 | 15,984 |
| Capitals of German States | 0 | - | 4.74 | 28,811 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,091 |
| The Trojan War | 0 | - | 4.83 | 39,425 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,524 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,041 |
| Roman Emperors | 0 | - | 4.95 | 118,475 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,186 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,260 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,389 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,889 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,827 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,696 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,209 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,872 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,663 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,619 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,015 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,297 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,987 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,611 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,941 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,980 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,588 |
| Regions of France | 0 | - | 4.78 | 119,224 |
| France Immigration by Country | 0 | - | 4.72 | 75,963 |
| Famous Germans | 0 | - | 4.50 | 54,610 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Germany True or False? | 0 | - | 4.61 | 48,531 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,464 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,055 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,443 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,779 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,044 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,945 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,306 |
| Asia Map Quiz | 0 | - | 4.99 | 906,944 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,804 |
| African East Coast | 0 | - | 4.96 | 95,040 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,914 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,784 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,119 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,200 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,961 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,535 |
| Country Codes of Europe | 0 | - | 3.46 | 13,653 |
| The Only European Country ... | 0 | - | 4.91 | 213,800 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,518 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,774 |
| History of Austria | 0 | - | 4.70 | 17,746 |
| Presidents of France | 0 | - | 4.25 | 23,902 |
| Geography of the French Empire | 0 | - | 4.48 | 26,928 |
| The French Revolution | 0 | - | 4.46 | 23,782 |
| France Multiple Choice | 0 | - | 4.38 | 40,634 |
| History of France | 0 | - | 4.59 | 56,030 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,383 |
| Ancient Greek Words | 0 | - | 4.92 | 110,685 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,614 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,692 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,956 |
| American to British Word Translation | 0 | - | 4.06 | 117,055 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,702 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,214 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,392 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,063 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,322 |
| Champions League Top 4 | 0 | - | 4.77 | 133,782 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,454 |
| Countries of Africa | 0 | - | 5.00 | 2,507,570 |
| Australia Map Quiz | 0 | - | 4.94 | 342,453 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,676 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,293 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,205 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,559 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,891 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,266 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,482 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,157 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,912 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,290 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,392 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,504 |
| European Geography A-Z | 0 | - | 4.28 | 48,996 |
| Austria... or Australia? | 0 | - | 4.68 | 103,862 |
| Word Chain - France | 0 | - | 4.38 | 42,582 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,770 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,767 |
| Italian Foods | 0 | - | 4.31 | 72,180 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,943 |
| The Mafia Quiz | 0 | - | 4.46 | 23,206 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,503 |
| History of The Netherlands | 0 | - | 4.46 | 17,310 |
| Canary Islands | 0 | - | 4.61 | 17,401 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,148 |
| British Spellings | 0 | - | 4.07 | 99,202 |
| British Groups of Things | 0 | - | 4.25 | 82,669 |
| British Acronyms | 0 | - | 4.39 | 45,618 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,944 |
| British Monopoly Board | 0 | - | 4.52 | 41,033 |
| Geography of Scotland | 0 | - | 4.63 | 21,478 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,869 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,432 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,261 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,609 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,558 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,254 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,500 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,094 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,431 |
| African Island Countries | 0 | - | 4.96 | 100,780 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,631 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,686 |
| Australian States and Territories | 0 | - | 4.95 | 140,787 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,016 |
| Australia True or False | 0 | - | 4.87 | 56,499 |
| Flags of North and South America | 0 | - | 4.99 | 367,127 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,149 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,156 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,215 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,132 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,537 |
| North America Map Quiz | 0 | - | 4.98 | 244,411 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,375 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,860 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,911 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,607 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,496 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,438 |
