| European Countries by First 2 Letters | 0 | - | 4.95 | 526,318 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,506 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,190 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,149 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,441 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,512 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,577 |
| Official European Union Languages | 0 | - | 4.97 | 236,511 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,696 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,181 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,535 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,566 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,685 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,064 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,322 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,864 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,238 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,987 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,611 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,941 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,980 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,844 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,808 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,859 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,046 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,945 |
| Champions League Winners | 0 | - | 4.92 | 996,245 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,999 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,332 |
| Celtic Nations | 0 | - | 4.69 | 46,811 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,326 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,209 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,233 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,776 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,956 |
| States of Germany | 0 | - | 4.96 | 150,024 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,005 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,517 |
| Regions of Italy | 0 | - | 4.92 | 74,696 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,804 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,319 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,140 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,405 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,353 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,091 |
| Name a Valid African Country | 0 | - | 4.98 | 152,929 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,140 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,392 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,142 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,787 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,962 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,748 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,235 |
| Departments of France | 0 | - | 4.93 | 52,800 |
| Word Chain - France | 0 | - | 4.38 | 42,582 |
| Italian Foods | 0 | - | 4.31 | 72,180 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,364 |
| British Groups of Things | 0 | - | 4.25 | 82,669 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,944 |
| England or Wales? | 0 | - | 4.94 | 45,309 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,483 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,710 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,554 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,045 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 294,214 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,562 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,845 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,448 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,598 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,981 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,029 |
| Slavic Languages | 0 | - | 4.67 | 53,976 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,881 |
| The Trojan War | 0 | - | 4.83 | 39,425 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,827 |
| Name that Greek Letter | 0 | - | 4.94 | 321,638 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,524 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,428 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,041 |
| Roman Emperors | 0 | - | 4.95 | 118,475 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,670 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,244 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,473 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,442 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,913 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,442 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,684 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,549 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,884 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,178 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,861 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,121 |
| History of Russia Quiz | 0 | - | 4.49 | 31,789 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,563 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,093 |
| Word Chain - Germany | 0 | - | 4.31 | 22,475 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,061 |
| Ancient Greek Words | 0 | - | 4.92 | 110,685 |
| History of Italy | 0 | - | 4.55 | 31,813 |
| Word Chain - Italy | 0 | - | 4.07 | 23,087 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,157 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,479 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,286 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,342 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,979 |
| Geography of Spain | 0 | - | 4.59 | 21,961 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,239 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,797 |
| Name a Valid English City | 0 | - | 4.19 | 16,628 |
| Imagine Lyrics | 0 | - | 4.53 | 43,062 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,292 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,803 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,514 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,390 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,890 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,828 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,696 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,209 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,875 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,663 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,619 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,016 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,298 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,971 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,589 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,146 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,608 |
| Capitals of French Regions | 0 | - | 4.45 | 15,984 |
| Regions of France | 0 | - | 4.78 | 119,224 |
| France Immigration by Country | 0 | - | 4.72 | 75,963 |
| Famous Germans | 0 | - | 4.50 | 54,610 |
| Capitals of German States | 0 | - | 4.74 | 28,811 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,092 |
| Germany True or False? | 0 | - | 4.61 | 48,532 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,464 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,443 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,506 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,614 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,779 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,044 |
| British to American Food Translation | 0 | - | 3.38 | 51,813 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,392 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,471 |
| Elton John Quiz | 0 | - | 4.48 | 18,402 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,326 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,320 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,147 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,091 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 832,613 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,188 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,261 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,977 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| Word Chain - Australia | 0 | - | 4.37 | 38,014 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,612 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,191 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,470 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,261 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,687 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,709 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,206 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,559 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,891 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,266 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,482 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,157 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,912 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,291 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,505 |
| European Geography A-Z | 0 | - | 4.28 | 48,996 |
| Geography of Russia | 0 | - | 4.57 | 21,427 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,774 |
| History of Austria | 0 | - | 4.70 | 17,746 |
| Austria... or Australia? | 0 | - | 4.68 | 103,862 |
| French Foods | 0 | - | 4.00 | 27,588 |
| Geography of the French Empire | 0 | - | 4.48 | 26,928 |
| The French Revolution | 0 | - | 4.46 | 23,782 |
| France Multiple Choice | 0 | - | 4.38 | 40,634 |
| History of France | 0 | - | 4.59 | 56,030 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,383 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,770 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,767 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,925 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,303 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,944 |
| The Mafia Quiz | 0 | - | 4.46 | 23,206 |
| Byzantine History | 0 | - | 4.91 | 28,619 |
| History of The Netherlands | 0 | - | 4.46 | 17,310 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,692 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| Canary Islands | 0 | - | 4.61 | 17,401 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,147 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,148 |
| American to British Word Translation | 0 | - | 4.06 | 117,055 |
| British Spellings | 0 | - | 4.07 | 99,202 |
| British Acronyms | 0 | - | 4.39 | 45,618 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,702 |
