| Germany Multiple Choice | 0 | - | 4.84 | 54,178 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,724 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,655 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,557 |
| Capitals of German States | 0 | - | 4.74 | 28,886 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,182 |
| States of Germany | 0 | - | 4.96 | 150,973 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,314 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,611 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,829 |
| Official European Union Languages | 0 | - | 4.97 | 237,578 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,266 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,385 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,422 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,515 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,327 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,729 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,312 |
| Celtic Nations | 0 | - | 4.69 | 46,868 |
| Capitals of French Regions | 0 | - | 4.45 | 16,015 |
| History of Italy | 0 | - | 4.55 | 31,891 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,410 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,552 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,080 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,070 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,156 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,298 |
| Geography of Germany | 0 | - | 4.35 | 17,128 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,274 |
| Famous Germans | 0 | - | 4.50 | 54,809 |
| German Groups of Things | 0 | - | 4.46 | 38,373 |
| Germany True or False? | 0 | - | 4.61 | 48,646 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,597 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,551 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,282 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,641 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,266 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,099 |
| History of Austria | 0 | - | 4.70 | 17,794 |
| Geography of the French Empire | 0 | - | 4.45 | 26,989 |
| The French Revolution | 0 | - | 4.46 | 23,855 |
| France Multiple Choice | 0 | - | 4.38 | 40,675 |
| Regions of Italy | 0 | - | 4.92 | 75,127 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,070 |
| The Vikings! | 0 | - | 4.46 | 28,281 |
| The Portuguese Empire | 0 | - | 4.58 | 12,026 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,103 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,676 |
| American to British Word Translation | 0 | - | 4.13 | 138,155 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,799 |
| Champions League Winners | 0 | - | 4.92 | 1,000,258 |
| Presidents of France | 0 | - | 4.25 | 23,965 |
| History of France | 0 | - | 4.59 | 56,558 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,990 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,499 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,624 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,247 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,774 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,629 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,635 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,980 |
| Slavic Languages | 0 | - | 4.68 | 54,139 |
| Departments of France | 0 | - | 4.93 | 53,206 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,424 |
| England or Wales? | 0 | - | 4.94 | 45,473 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,156 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,301 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,088 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,618 |
| History of Spain | 0 | - | 4.29 | 21,041 |
| Languages of Spain | 0 | - | 4.36 | 23,229 |
| British to American Word Translation | 0 | - | 3.74 | 254,891 |
| British Foods by Description | 0 | - | 3.94 | 48,287 |
| British and American Word Differences | 0 | - | 2.63 | 46,819 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,542 |
| Bridges of London | 0 | - | 4.17 | 10,073 |
| British Sport Trivia | 0 | - | 4.37 | 20,403 |
| Famous Welsh People | 0 | - | 4.21 | 9,793 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,079 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,530 |
| History of Russia Quiz | 0 | - | 4.49 | 31,835 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,629 |
| History of Germany | 0 | - | 4.39 | 52,708 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,285 |
| Name that Greek Letter | 0 | - | 4.93 | 322,440 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,698 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,014 |
| Word Chain - Germany | 0 | - | 4.31 | 22,519 |
| The Trojan War | 0 | - | 4.83 | 39,547 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,100 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,256 |
| Roman Emperors | 0 | - | 4.95 | 119,148 |
| British Noble Ranks | 0 | - | 3.85 | 20,399 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,943 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,158 |
| Australian Capitals | 0 | - | 4.92 | 62,648 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,658 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,110 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,092 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,965 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,428 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,283 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,017 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,796 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,427 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,580 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,107 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,750 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,058 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,099 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,786 |
| Regions of France | 0 | - | 4.77 | 119,874 |
| France Immigration by Country | 0 | - | 4.72 | 76,157 |
| German Loan Words | 0 | - | 4.27 | 135,593 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,698 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,138 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,837 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,019 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,139 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,806 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,662 |
| Asia Map Quiz | 0 | - | 4.99 | 910,446 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,209 |
| African East Coast | 0 | - | 4.96 | 95,461 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,319 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,151 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,970 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,435 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,805 |
| European Physical Geography | 0 | - | 4.26 | 33,417 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,216 |
| Country Codes of Europe | 0 | - | 3.46 | 13,673 |
| The Only European Country ... | 0 | - | 4.91 | 214,967 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,219 |
| Geography of Russia | 0 | - | 4.57 | 21,471 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,842 |
| German History A-Z | 0 | - | 4.49 | 24,502 |
| Ancient Greek Words | 0 | - | 4.93 | 111,054 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,814 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,805 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,410 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,447 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,934 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,086 |
| Champions League Top 4 | 0 | - | 4.77 | 134,833 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 98,133 |
| Countries of Africa | 0 | - | 5.00 | 2,519,561 |
| Australia Map Quiz | 0 | - | 4.94 | 343,168 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,622 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,109 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,416 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,842 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,082 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,707 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,663 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,350 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,076 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,418 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,503 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,641 |
| European Geography A-Z | 0 | - | 4.29 | 49,097 |
| Austria... or Australia? | 0 | - | 4.68 | 104,068 |
| Word Chain - France | 0 | - | 4.38 | 42,669 |
| Bundesliga Champions | 0 | - | 4.24 | 56,002 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 45,260 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,861 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,833 |
| Italian Foods | 0 | - | 4.31 | 72,420 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,965 |
| History of The Netherlands | 0 | - | 4.46 | 17,352 |
| Canary Islands | 0 | - | 4.61 | 17,432 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,338 |
| British Spellings | 0 | - | 4.07 | 99,343 |
| British Groups of Things | 0 | - | 4.25 | 82,758 |
| British Acronyms | 0 | - | 4.39 | 45,693 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,989 |
| British Monopoly Board | 0 | - | 4.52 | 41,090 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,378,890 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,614 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,411 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,142 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,850 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,633 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,795 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,678 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,130 |
| African Island Countries | 0 | - | 4.96 | 101,107 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,364 |
| Australian States and Territories | 0 | - | 4.96 | 141,296 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,115 |
| Australia True or False | 0 | - | 4.87 | 56,655 |
| Flags of North and South America | 0 | - | 4.99 | 369,818 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,375 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,480 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,758 |
| South America Map Quiz | 0 | - | 5.00 | 1,544,092 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,597 |
| North America Map Quiz | 0 | - | 4.98 | 246,271 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,516 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,649 |
