| European Countries by First 2 Letters | 0 | - | 4.95 | 531,629 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,807 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,829 |
| England or Wales? | 0 | - | 4.94 | 45,881 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,545 |
| Official European Union Languages | 0 | - | 4.97 | 239,384 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,414 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,076 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,069 |
| Slavic Languages | 0 | - | 4.68 | 54,593 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,209 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,988 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,465 |
| Celtic Nations | 0 | - | 4.61 | 47,058 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,866 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,068 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,767 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,603 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,326 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,905 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,864 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,521 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,581 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,198 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,668 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,780 |
| States of Germany | 0 | - | 4.95 | 153,908 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,503 |
| Regions of Italy | 0 | - | 4.92 | 76,631 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,634 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,964 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,578 |
| Champions League Winners | 0 | - | 4.92 | 1,012,711 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,680 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,803 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,019 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,073 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,337 |
| Austria... or Australia? | 0 | - | 4.68 | 104,643 |
| Departments of France | 0 | - | 4.93 | 54,823 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,694 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,558 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,699 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,134 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,217 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,764 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,001 |
| French History Multiple Choice | 0 | - | 4.55 | 33,170 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,486 |
| Name that Greek Letter | 0 | - | 4.93 | 324,611 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,701 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,584 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,780 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,558 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,606 |
| History of Russia Quiz | 0 | - | 4.47 | 31,980 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,559 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,411 |
| The Trojan War | 0 | - | 4.83 | 39,926 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,636 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,078 |
| History of Italy | 0 | - | 4.55 | 32,105 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,173 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,455 |
| Roman Emperors | 0 | - | 4.95 | 120,836 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,774 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,372 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,247 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,007 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,614 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 120,977 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,447 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,991 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,672 |
| European Geography By Letter - M | 0 | - | 4.69 | 131,990 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,814 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,332 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,548 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,235 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,626 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,442 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,096 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,394 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,362 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,168 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,404 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,629 |
| Capitals of French Regions | 0 | - | 4.45 | 16,151 |
| Regions of France | 0 | - | 4.70 | 121,689 |
| France Immigration by Country | 0 | - | 4.70 | 76,818 |
| Famous Germans | 0 | - | 4.50 | 55,650 |
| German Groups of Things | 0 | - | 4.47 | 38,585 |
| Capitals of German States | 0 | - | 4.74 | 29,032 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,476 |
| Germany True or False? | 0 | - | 4.61 | 48,957 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,305 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,870 |
| Ancient Greek Words | 0 | - | 4.93 | 112,206 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,040 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,619 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,377 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,627 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,537 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,759 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,780 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,530 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,685 |
| Australian Capitals | 0 | - | 4.92 | 62,801 |
| European Physical Geography | 0 | - | 4.26 | 33,570 |
| Geography of Russia | 0 | - | 4.57 | 21,573 |
| History of Austria | 0 | - | 4.70 | 17,946 |
| Geography of the French Empire | 0 | - | 4.45 | 27,193 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| France Multiple Choice | 0 | - | 4.39 | 40,805 |
| History of France | 0 | - | 4.61 | 57,447 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,538 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,934 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,403 |
| The Vikings! | 0 | - | 4.46 | 28,388 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,303 |
| The Portuguese Empire | 0 | - | 4.58 | 12,094 |
| American to British Word Translation | 0 | - | 4.14 | 139,516 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,013 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,251 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,501 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,417 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,766 |
| Champions League Top 4 | 0 | - | 4.77 | 138,095 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,960 |
| Asia Map Quiz | 0 | - | 4.99 | 922,740 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,597 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,139 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,206 |
| Australia Map Quiz | 0 | - | 4.95 | 345,709 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,309 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,366 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,820 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,210 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,657 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,746 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,056 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,866 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,560 |
| European Geography By Letter - I | 0 | - | 4.09 | 96,258 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,902 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,315 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,385 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,822 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,677 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,663 |
| European Geography A-Z | 0 | - | 4.29 | 49,427 |
| Country Codes of Europe | 0 | - | 3.43 | 13,782 |
| The Only European Country ... | 0 | - | 4.91 | 218,254 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,099 |
| European Geographic Groups of Four | 0 | - | 4.54 | 19,466 |
| Famous French People | 0 | - | 4.07 | 35,981 |
| Presidents of France | 0 | - | 4.25 | 24,291 |
| Word Chain - France | 0 | - | 4.38 | 42,895 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,164 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,997 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,911 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,296 |
| Italian Foods | 0 | - | 4.30 | 73,108 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,552 |
| The Mafia Quiz | 0 | - | 4.46 | 23,408 |
| History of The Netherlands | 0 | - | 4.46 | 17,524 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,092 |
| Canary Islands | 0 | - | 4.62 | 17,508 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,491 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,944 |
| British Spellings | 0 | - | 4.06 | 99,551 |
| British Groups of Things | 0 | - | 4.25 | 82,969 |
| British Acronyms | 0 | - | 4.40 | 45,898 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,084 |
| British Monopoly Board | 0 | - | 4.52 | 41,231 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,051 |
| Geography of Scotland | 0 | - | 4.63 | 21,704 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,661 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,104 |
| Countries of Africa | 0 | - | 5.00 | 2,552,072 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,586 |
| African East Coast | 0 | - | 4.96 | 96,523 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,397 |
| Astronomy True or False | 0 | - | 4.39 | 36,564 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,813 |
| Sahel Countries on a Map | 0 | - | 4.99 | 21,437 |
| Australian States and Territories | 0 | - | 4.96 | 142,573 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,433 |
| Australia True or False | 0 | - | 4.87 | 57,058 |
| Flags of North and South America | 0 | - | 4.99 | 375,708 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,852 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,619 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,372 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,907 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,704 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,758 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,570 |
| North America Map Quiz | 0 | - | 4.98 | 250,550 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,915 |
