| European Countries by First 2 Letters | 0 | - | 4.95 | 528,978 |
| History of Russia Quiz | 0 | - | 4.49 | 31,887 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,705 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,028 |
| Official European Union Languages | 0 | - | 4.97 | 238,215 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,665 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,651 |
| Geography of Russia | 0 | - | 4.57 | 21,515 |
| Slavic Languages | 0 | - | 4.68 | 54,287 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,906 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,773 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,368 |
| Celtic Nations | 0 | - | 4.69 | 46,912 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,281 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,080 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,862 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,063 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,803 |
| Slavic Countries | 0 | - | 4.96 | 111,524 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,301 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,905 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,779 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,956 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,418 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,055 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,764 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,547 |
| Word Chain - Russia | 0 | - | 4.33 | 15,740 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,765 |
| States of Germany | 0 | - | 4.96 | 152,047 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,920 |
| Regions of Italy | 0 | - | 4.92 | 75,647 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,971 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,713 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,081 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,665 |
| Champions League Winners | 0 | - | 4.92 | 1,004,489 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,749 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,423 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,781 |
| Departments of France | 0 | - | 4.93 | 53,882 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,526 |
| England or Wales? | 0 | - | 4.94 | 45,620 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,961 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,569 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,645 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,545 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,598 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,585 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,429 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,364 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,289 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,731 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,387 |
| Name that Greek Letter | 0 | - | 4.93 | 323,170 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,951 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,911 |
| Famous Russians | 0 | - | 4.16 | 23,825 |
| The Trojan War | 0 | - | 4.83 | 39,664 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,604 |
| History of Italy | 0 | - | 4.55 | 31,944 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,671 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,440 |
| Roman Emperors | 0 | - | 4.95 | 119,717 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,631 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,180 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,770 |
| Australian Capitals | 0 | - | 4.92 | 62,704 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,485 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,707 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,434 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,154 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,203 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,233 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,291 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,611 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,508 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,838 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,200 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,068 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,223 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,886 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,174 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,197 |
| European Geography By Letter - S #1 | 0 | - | 4.54 | 100,419 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,377 |
| Capitals of French Regions | 0 | - | 4.45 | 16,046 |
| Regions of France | 0 | - | 4.75 | 120,497 |
| France Immigration by Country | 0 | - | 4.70 | 76,428 |
| Famous Germans | 0 | - | 4.50 | 55,211 |
| German Groups of Things | 0 | - | 4.46 | 38,450 |
| Capitals of German States | 0 | - | 4.74 | 28,936 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,293 |
| Germany True or False? | 0 | - | 4.61 | 48,748 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,907 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,788 |
| Ancient Greek Words | 0 | - | 4.93 | 111,406 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,355 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,253 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,239 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,103 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,811 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,504 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,288 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,943 |
| European Physical Geography | 0 | - | 4.26 | 33,479 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,920 |
| History of Austria | 0 | - | 4.70 | 17,841 |
| Geography of the French Empire | 0 | - | 4.45 | 27,034 |
| The French Revolution | 0 | - | 4.46 | 23,913 |
| France Multiple Choice | 0 | - | 4.39 | 40,717 |
| History of France | 0 | - | 4.59 | 56,872 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,464 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,472 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,025 |
| The Vikings! | 0 | - | 4.46 | 28,324 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,061 |
| The Portuguese Empire | 0 | - | 4.58 | 12,053 |
| American to British Word Translation | 0 | - | 4.14 | 138,814 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,868 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,595 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,623 |
| Champions League Top 4 | 0 | - | 4.77 | 135,951 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,038 |
| Asia Map Quiz | 0 | - | 4.99 | 915,020 |
| Countries of Africa | 0 | - | 5.00 | 2,531,507 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,664 |
| African East Coast | 0 | - | 4.96 | 95,875 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,682 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,511 |
| Australia Map Quiz | 0 | - | 4.95 | 343,922 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,749 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,852 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,596 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,638 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,078 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,313 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,638 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,803 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,457 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,290 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,948 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,553 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,786 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,626 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,052 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,916 |
| European Geography A-Z | 0 | - | 4.29 | 49,214 |
| Country Codes of Europe | 0 | - | 3.43 | 13,701 |
| The Only European Country ... | 0 | - | 4.91 | 216,116 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,849 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,073 |
| Austria... or Australia? | 0 | - | 4.68 | 104,250 |
| Famous French People | 0 | - | 4.06 | 35,178 |
| Presidents of France | 0 | - | 4.25 | 24,043 |
| Word Chain - France | 0 | - | 4.38 | 42,752 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,951 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,885 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,538 |
| Italian Foods | 0 | - | 4.30 | 72,677 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,269 |
| The Mafia Quiz | 0 | - | 4.46 | 23,302 |
| History of The Netherlands | 0 | - | 4.46 | 17,416 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,015 |
| Canary Islands | 0 | - | 4.62 | 17,463 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,625 |
| British Spellings | 0 | - | 4.06 | 99,415 |
| British Groups of Things | 0 | - | 4.25 | 82,841 |
| British Acronyms | 0 | - | 4.40 | 45,769 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,026 |
| British Monopoly Board | 0 | - | 4.52 | 41,147 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,705 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,714 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,602 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,901 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,657 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,730 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,437 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,061 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,132 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,253 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,763 |
| African Island Countries | 0 | - | 4.96 | 101,475 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,136 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,152 |
| Australian States and Territories | 0 | - | 4.96 | 141,756 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,241 |
| Australia True or False | 0 | - | 4.87 | 56,791 |
| Flags of North and South America | 0 | - | 4.99 | 372,195 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,532 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,120 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,454 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,746 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,021,049 |
| North America Map Quiz | 0 | - | 4.98 | 247,881 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,670 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,606 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,363 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,063 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,813 |
