| European Countries by First 2 Letters | 0 | - | 4.95 | 533,000 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,410 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,852 |
| Official European Union Languages | 0 | - | 4.97 | 240,354 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,804 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,369 |
| Slavic Languages | 0 | - | 4.67 | 54,776 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,377 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,099 |
| History of Russia Quiz | 0 | - | 4.47 | 32,024 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,900 |
| Celtic Nations | 0 | - | 4.61 | 47,125 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,128 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,157 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,462 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,352 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,907 |
| Slavic Countries | 0 | - | 4.96 | 112,494 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,745 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,509 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,550 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,534 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,085 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,892 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,061 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,157 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,904 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,571 |
| States of Germany | 0 | - | 4.95 | 154,908 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,797 |
| Regions of Italy | 0 | - | 4.92 | 77,247 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,905 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,564 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,891 |
| Champions League Winners | 0 | - | 4.92 | 1,017,805 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,814 |
| Geography of Russia | 0 | - | 4.57 | 21,616 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,157 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,861 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,290 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,284 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,221 |
| Austria... or Australia? | 0 | - | 4.67 | 104,832 |
| Departments of France | 0 | - | 4.93 | 55,382 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,775 |
| England or Wales? | 0 | - | 4.94 | 46,018 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,444 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,778 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,740 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,435 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,884 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,043 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,234 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,829 |
| Name that Greek Letter | 0 | - | 4.93 | 325,241 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,889 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,758 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,665 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,998 |
| Word Chain - Russia | 0 | - | 4.33 | 15,805 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,790 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,646 |
| The Trojan War | 0 | - | 4.83 | 40,047 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,161 |
| History of Italy | 0 | - | 4.55 | 32,182 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,513 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,682 |
| Roman Emperors | 0 | - | 4.95 | 121,409 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,845 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,867 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,465 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,178 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,972 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,631 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,342 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,742 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,248 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,705 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,262 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,774 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,277 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,884 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,164 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,779 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,857 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,567 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,238 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,507 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,463 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,560 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,609 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,788 |
| Capitals of French Regions | 0 | - | 4.45 | 16,195 |
| Regions of France | 0 | - | 4.70 | 122,376 |
| France Immigration by Country | 0 | - | 4.70 | 77,002 |
| Famous Germans | 0 | - | 4.50 | 55,864 |
| German Groups of Things | 0 | - | 4.47 | 38,668 |
| Capitals of German States | 0 | - | 4.74 | 29,093 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,579 |
| Germany True or False? | 0 | - | 4.61 | 49,062 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,567 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,362 |
| Ancient Greek Words | 0 | - | 4.93 | 112,636 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,530 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,930 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,439 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,942 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,679 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,976 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,253 |
| Australian Capitals | 0 | - | 4.92 | 62,861 |
| European Physical Geography | 0 | - | 4.26 | 33,616 |
| Which European Country - Multiple Choice | 0 | - | 4.51 | 84,633 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Geography of the French Empire | 0 | - | 4.45 | 27,230 |
| The French Revolution | 0 | - | 4.47 | 24,165 |
| France Multiple Choice | 0 | - | 4.39 | 40,874 |
| History of France | 0 | - | 4.61 | 57,718 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,573 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,353 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,609 |
| The Vikings! | 0 | - | 4.46 | 28,419 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,438 |
| The Portuguese Empire | 0 | - | 4.58 | 12,117 |
| American to British Word Translation | 0 | - | 4.14 | 139,810 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,091 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,435 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,637 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,844 |
| Champions League Top 4 | 0 | - | 4.78 | 139,533 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,338 |
| Asia Map Quiz | 0 | - | 4.99 | 926,622 |
| Which Asian Country? | 0 | - | 4.64 | 57,790 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,625 |
| Which African Country? | 0 | - | 4.58 | 36,485 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,591 |
| Australia Map Quiz | 0 | - | 4.95 | 346,470 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,379 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,312 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,982 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,187 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,563 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,392 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,644 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,338 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,112 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,693 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,337 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,720 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,689 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,938 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,990 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,466 |
| European Geography A-Z | 0 | - | 4.29 | 49,517 |
| Country Codes of Europe | 0 | - | 3.45 | 13,846 |
| The Only European Country ... | 0 | - | 4.91 | 219,536 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,804 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,459 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,371 |
| Famous French People | 0 | - | 4.05 | 36,155 |
| Presidents of France | 0 | - | 4.25 | 24,368 |
| Word Chain - France | 0 | - | 4.38 | 42,960 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,277 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,069 |
| Figures from Greek Mythology | 0 | - | 4.91 | 190,038 |
| Italian Foods | 0 | - | 4.30 | 73,379 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,061 |
| The Mafia Quiz | 0 | - | 4.46 | 23,451 |
| History of The Netherlands | 0 | - | 4.46 | 17,571 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,135 |
| Canary Islands | 0 | - | 4.62 | 17,549 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,149 |
| British Spellings | 0 | - | 4.06 | 99,625 |
| British Groups of Things | 0 | - | 4.26 | 83,041 |
| British Acronyms | 0 | - | 4.40 | 45,961 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,125 |
| British Monopoly Board | 0 | - | 4.52 | 41,293 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,207 |
| Geography of Scotland | 0 | - | 4.63 | 21,805 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,157 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,975 |
| China Multiple Choice | 0 | - | 4.50 | 37,438 |
| Countries of Africa | 0 | - | 5.00 | 2,564,391 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,240 |
| African East Coast | 0 | - | 4.96 | 96,919 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,800 |
| Australian States and Territories | 0 | - | 4.96 | 143,053 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,543 |
| Australia True or False | 0 | - | 4.87 | 57,207 |
| Flags of North and South America | 0 | - | 4.99 | 378,073 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,074 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,965 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,849 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,279 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,783 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,799 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,871 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,164 |
| North America Map Quiz | 0 | - | 4.98 | 252,725 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,037 |
