| European Countries by First 2 Letters | 0 | - | 4.95 | 529,236 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,328 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,131 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,882 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,073 |
| Official European Union Languages | 0 | - | 4.97 | 238,354 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,755 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,917 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,588 |
| Slavic Languages | 0 | - | 4.68 | 54,325 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,948 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,802 |
| History of Russia Quiz | 0 | - | 4.47 | 31,905 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,713 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,378 |
| Celtic Nations | 0 | - | 4.69 | 46,925 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,761 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,885 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,485 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,200 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,257 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,327 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,334 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,652 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,548 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,874 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,250 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,448 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,264 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,291 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,176 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,013 |
| Slavic Countries | 0 | - | 4.96 | 111,588 |
| Famous Germans | 0 | - | 4.50 | 55,257 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,329 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,953 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,419 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,379 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,345 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,027 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,883 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,833 |
| States of Germany | 0 | - | 4.96 | 152,310 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,974 |
| Regions of Italy | 0 | - | 4.92 | 75,767 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,068 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,832 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,123 |
| Champions League Winners | 0 | - | 4.92 | 1,005,708 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,441 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,461 |
| Geography of Russia | 0 | - | 4.57 | 21,522 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,637 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,685 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,354 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,672 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,842 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,493 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,331 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,977 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,583 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,820 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,073 |
| European Geography A-Z | 0 | - | 4.29 | 49,237 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,006 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,620 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,952 |
| Famous French People | 0 | - | 4.06 | 35,425 |
| Departments of France | 0 | - | 4.93 | 54,006 |
| The Mafia Quiz | 0 | - | 4.46 | 23,314 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,535 |
| History of The Netherlands | 0 | - | 4.46 | 17,428 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,747 |
| England or Wales? | 0 | - | 4.94 | 45,651 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,169 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,650 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,624 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,803 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,484 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,404 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,749 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,621 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,057 |
| France A-Z | 0 | - | 4.16 | 38,190 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,868 |
| Name that Greek Letter | 0 | - | 4.93 | 323,305 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,592 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,447 |
| Switzerland A-Z | 0 | - | 4.45 | 25,635 |
| Africa A-Z | 0 | - | 4.57 | 46,594 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,056 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,991 |
| Famous Russians | 0 | - | 4.16 | 23,833 |
| Word Chain - Russia | 0 | - | 4.33 | 15,742 |
| Russian History A-Z | 0 | - | 4.38 | 31,665 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,129 |
| The Trojan War | 0 | - | 4.83 | 39,691 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,731 |
| Famous Irish People | 0 | - | 4.05 | 45,990 |
| History of Italy | 0 | - | 4.55 | 31,960 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,729 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,485 |
| Roman Emperors | 0 | - | 4.95 | 119,878 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,643 |
| Famous Nordic People | 0 | - | 4.34 | 20,090 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,207 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,525 |
| People on Money - England | 0 | - | 4.29 | 16,608 |
| London A-Z | 0 | - | 4.10 | 40,757 |
| Asian Cities A-Z by Clue | 0 | - | 4.49 | 35,513 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,927 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,157 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,771 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,247 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,913 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,200 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,217 |
| Capitals of French Regions | 0 | - | 4.45 | 16,057 |
| Regions of France | 0 | - | 4.75 | 120,630 |
| France Immigration by Country | 0 | - | 4.70 | 76,470 |
| German Groups of Things | 0 | - | 4.46 | 38,468 |
| Capitals of German States | 0 | - | 4.74 | 28,945 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,311 |
| Germany True or False? | 0 | - | 4.61 | 48,773 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,960 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,432 |
| Ancient Greek Words | 0 | - | 4.93 | 111,502 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,307 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,250 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,177 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,986 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,599 |
| Famous Scottish People | 0 | - | 4.22 | 18,392 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,098 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,659 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,386 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,857 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,330 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,993 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,822 |
| Middle East A-Z | 0 | - | 4.47 | 46,001 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,315,526 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,635 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,604 |
| Australian Capitals | 0 | - | 4.92 | 62,714 |
| Canada A-Z | 0 | - | 4.73 | 32,802 |
| European Physical Geography | 0 | - | 4.26 | 33,493 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,936 |
| History of Austria | 0 | - | 4.70 | 17,854 |
| Geography of the French Empire | 0 | - | 4.45 | 27,046 |
| The French Revolution | 0 | - | 4.46 | 23,924 |
| France Multiple Choice | 0 | - | 4.39 | 40,729 |
| History of France | 0 | - | 4.59 | 56,930 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,788 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,085 |
| The Vikings! | 0 | - | 4.46 | 28,337 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,098 |
| The Portuguese Empire | 0 | - | 4.58 | 12,060 |
| American to British Word Translation | 0 | - | 4.14 | 138,933 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,881 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,643 |
| Champions League Top 4 | 0 | - | 4.77 | 136,204 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,711 |
| Asia Map Quiz | 0 | - | 4.99 | 915,880 |
| A Quiz About Islam | 0 | - | 4.31 | 48,418 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,818 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,064 |
| Countries of Africa | 0 | - | 5.00 | 2,534,103 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,750 |
| African East Coast | 0 | - | 4.96 | 95,966 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,792 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,601 |
| Australia Map Quiz | 0 | - | 4.95 | 344,220 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,373 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,838 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,447 |
| United States Map Quiz | 0 | - | 4.98 | 4,156,463 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,766 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,053 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,627 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,826 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,258 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,652 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,087 |
| Country Codes of Europe | 0 | - | 3.43 | 13,705 |
| The Only European Country ... | 0 | - | 4.91 | 216,380 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,990 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,297 |
| Austria... or Australia? | 0 | - | 4.68 | 104,303 |
| Presidents of France | 0 | - | 4.25 | 24,081 |
| Word Chain - France | 0 | - | 4.38 | 42,766 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,970 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,901 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,760 |
| Italian Foods | 0 | - | 4.30 | 72,735 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,021 |
| Canary Islands | 0 | - | 4.62 | 17,473 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 67,311 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,666 |
