| European Countries by First 2 Letters | 0 | - | 4.95 | 529,536 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,146 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,402 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,253 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,814 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,124 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,127 |
| Official European Union Languages | 0 | - | 4.97 | 238,498 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,845 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,185 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,769 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,873 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,984 |
| History of Russia Quiz | 0 | - | 4.47 | 31,917 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,833 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,660 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,370 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,506 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,839 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,281 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,185 |
| Slavic Countries | 0 | - | 4.96 | 111,654 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,352 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,007 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,947 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,926 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,385 |
| Celtic Nations | 0 | - | 4.69 | 46,945 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,272 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,938 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,223 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,233 |
| German Groups of Things | 0 | - | 4.46 | 38,477 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,244 |
| Champions League Winners | 0 | - | 4.92 | 1,006,679 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,335 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,120 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,127 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,548 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,980 |
| Geography of Russia | 0 | - | 4.57 | 21,527 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,896 |
| States of Germany | 0 | - | 4.96 | 152,564 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,034 |
| Regions of Italy | 0 | - | 4.92 | 75,866 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,153 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,934 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,205 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,700 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,284 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,347 |
| Name a Valid African Country | 0 | - | 4.98 | 154,069 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,488 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,673 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,490 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,994 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,708 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,338 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,343 |
| Departments of France | 0 | - | 4.93 | 54,099 |
| Word Chain - France | 0 | - | 4.38 | 42,779 |
| Italian Foods | 0 | - | 4.30 | 72,781 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,545 |
| British Groups of Things | 0 | - | 4.25 | 82,864 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,035 |
| England or Wales? | 0 | - | 4.94 | 45,687 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,344 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,031 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,809 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,003 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,448 |
| Countries that Beat Canada | 0 | - | 4.91 | 97,380 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,602 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,655 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,700 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,959 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,444 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,054 |
| Slavic Languages | 0 | - | 4.68 | 54,359 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,845 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,786 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,221 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,803 |
| The Trojan War | 0 | - | 4.83 | 39,724 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,406 |
| Name that Greek Letter | 0 | - | 4.93 | 323,444 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,837 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,611 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,526 |
| Roman Emperors | 0 | - | 4.95 | 120,039 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,341 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,464 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,610 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,680 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,021 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,922 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,083 |
| Famous Russians | 0 | - | 4.16 | 23,841 |
| Word Chain - Russia | 0 | - | 4.33 | 15,751 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,728 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,394 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,226 |
| Word Chain - Germany | 0 | - | 4.31 | 22,586 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,806 |
| History of Italy | 0 | - | 4.55 | 31,974 |
| Word Chain - Italy | 0 | - | 4.07 | 23,165 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,780 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,660 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,398 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,237 |
| Geography of Spain | 0 | - | 4.59 | 22,076 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,341 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,120 |
| Name a Valid English City | 0 | - | 4.19 | 16,728 |
| Countries With One Word and Two U's | 0 | - | 4.45 | 50,949 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,966 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,208 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,173 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,246 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 118,892 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,973 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,618 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,521 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,661 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,543 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,853 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,703 |
| European Geography By Letter - V | 0 | - | 4.43 | 93,014 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,441 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,852 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,605 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,433 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,009 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,005 |
| Capitals of French Regions | 0 | - | 4.45 | 16,071 |
| Regions of France | 0 | - | 4.72 | 120,781 |
| France Immigration by Country | 0 | - | 4.70 | 76,515 |
| Famous Germans | 0 | - | 4.50 | 55,292 |
| Capitals of German States | 0 | - | 4.74 | 28,953 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,333 |
| Germany True or False? | 0 | - | 4.61 | 48,802 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,015 |
| Ancient Greek Words | 0 | - | 4.93 | 111,596 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,493 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,130 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,354 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,266 |
| British to American Food Translation | 0 | - | 3.38 | 51,965 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,663 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,259 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,709 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,509 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,561 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,250 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 279,146 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,817 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,277 |
| Australian Capitals | 0 | - | 4.92 | 62,722 |
| Word Chain - Australia | 0 | - | 4.38 | 38,141 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,522 |
| European Physical Geography | 0 | - | 4.26 | 33,509 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,217 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,961 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,705 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,433 |
| Romania Country Quiz | 0 | - | 4.63 | 53,777 |
| History of Austria | 0 | - | 4.70 | 17,861 |
| Geography of the French Empire | 0 | - | 4.45 | 27,060 |
| The French Revolution | 0 | - | 4.47 | 23,929 |
| France Multiple Choice | 0 | - | 4.39 | 40,741 |
| History of France | 0 | - | 4.59 | 56,978 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,949 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,099 |
| The Vikings! | 0 | - | 4.46 | 28,343 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,126 |
| The Portuguese Empire | 0 | - | 4.58 | 12,064 |
| American to British Word Translation | 0 | - | 4.14 | 139,050 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,894 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,034 |
| Champions League Top 4 | 0 | - | 4.77 | 136,445 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,208 |
| Asia Map Quiz | 0 | - | 4.99 | 916,724 |
| Countries that Beat India | 0 | - | 4.42 | 62,999 |
| Countries of Africa | 0 | - | 5.00 | 2,536,874 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,826 |
| African East Coast | 0 | - | 4.96 | 96,063 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,874 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,355 |
| Countries that Beat D.R. Congo | 0 | - | 4.74 | 41,789 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,054 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,687 |
| Australia Map Quiz | 0 | - | 4.95 | 344,601 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,751 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,346 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,576 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,381 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,148 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,054 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,243 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,649 |
