| European Countries by First 2 Letters | 0 | - | 4.95 | 527,904 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,402 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,187 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,861 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,902 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,792 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,164 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,872 |
| Official European Union Languages | 0 | - | 4.97 | 237,715 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,354 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,637 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,644 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,896 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,779 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,762 |
| History of Russia Quiz | 0 | - | 4.49 | 31,850 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,161 |
| Italian Foods | 0 | - | 4.31 | 72,485 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,675 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,750 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,126 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,416 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,606 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,781 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,551 |
| Slavic Countries | 0 | - | 4.96 | 111,288 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,208 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,774 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,723 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,321 |
| Celtic Nations | 0 | - | 4.69 | 46,877 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,148 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,793 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,087 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,130 |
| German Groups of Things | 0 | - | 4.46 | 38,390 |
| Champions League Winners | 0 | - | 4.92 | 1,001,070 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,211 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,756 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,638 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,633 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,719 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,382 |
| Geography of Russia | 0 | - | 4.57 | 21,486 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,515 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,560 |
| States of Germany | 0 | - | 4.96 | 151,178 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,599 |
| Regions of Italy | 0 | - | 4.92 | 75,246 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 49,858 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,234 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,763 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,624 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,818 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,525 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,146 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,815 |
| Name a Valid African Country | 0 | - | 4.98 | 153,467 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,806 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,539 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,302 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,901 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,977 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,121 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,206 |
| Departments of France | 0 | - | 4.93 | 53,401 |
| Word Chain - France | 0 | - | 4.38 | 42,682 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,452 |
| British Groups of Things | 0 | - | 4.25 | 82,786 |
| British to American Food Translation | 0 | - | 3.38 | 51,910 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,999 |
| England or Wales? | 0 | - | 4.94 | 45,504 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,314 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,376 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,086 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,520 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,196 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,139 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,515 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,628 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,317 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,909 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,159 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,533 |
| Slavic Languages | 0 | - | 4.68 | 54,167 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,580 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,276 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,952 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,733 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,676 |
| The Trojan War | 0 | - | 4.83 | 39,581 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,821 |
| Name that Greek Letter | 0 | - | 4.93 | 322,619 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,209 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,529 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,306 |
| Roman Emperors | 0 | - | 4.95 | 119,350 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,969 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,365 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,541 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,581 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,973 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,016 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,513 |
| American Foods | 0 | - | 3.66 | 39,329 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,616 |
| Famous Russians | 0 | - | 4.16 | 23,775 |
| Word Chain - Russia | 0 | - | 4.33 | 15,726 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,644 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,160 |
| French Foods | 0 | - | 4.00 | 27,643 |
| Word Chain - Germany | 0 | - | 4.31 | 22,532 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,568 |
| History of Italy | 0 | - | 4.55 | 31,908 |
| Word Chain - Italy | 0 | - | 4.07 | 23,136 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,483 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,572 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,343 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,555 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,103 |
| Geography of Spain | 0 | - | 4.59 | 22,021 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,304 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,927 |
| Name a Valid English City | 0 | - | 4.19 | 16,681 |
| Foods by Country of Origin #1 | 0 | - | 4.40 | 335,859 |
| Countries That Produce the Most Spices | 0 | - | 4.44 | 41,508 |
| Countries that Produce the Most Cheese per Capita | 0 | - | 4.53 | 52,676 |
| Fruit and Vegetable Emojis | 0 | - | 4.42 | 79,867 |
| Countries Which Eat the Most Beef | 0 | - | 4.46 | 50,182 |
| Countries by Milk Production | 0 | - | 4.54 | 43,802 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,910 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,449 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,030 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,700 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,144 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,121 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,004 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,457 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,356 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,043 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,822 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,451 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,626 |
| Europe Map Quiz | 0 | - | 5.00 | 4,747,231 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,811 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,261 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,912 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,765 |
| Capitals of French Regions | 0 | - | 4.45 | 16,021 |
| Regions of France | 0 | - | 4.77 | 120,010 |
| France Immigration by Country | 0 | - | 4.72 | 76,238 |
| Famous Germans | 0 | - | 4.50 | 54,857 |
| Capitals of German States | 0 | - | 4.74 | 28,897 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,213 |
| Germany True or False? | 0 | - | 4.61 | 48,664 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,751 |
| Ancient Greek Words | 0 | - | 4.93 | 111,135 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,920 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,850 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,080 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,161 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,468 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,126 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,180 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,413 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,441 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,199 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,226 |
| Countries That Eat the Most Pork | 0 | - | 4.18 | 39,196 |
| Countries that Produce the Most Cheese | 0 | - | 4.77 | 63,177 |
| Top 15 Countries with the Most Starbucks | 0 | - | 4.51 | 80,744 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,167 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,786 |
| Australian Capitals | 0 | - | 4.92 | 62,665 |
| Word Chain - Australia | 0 | - | 4.37 | 38,085 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,402 |
| European Physical Geography | 0 | - | 4.26 | 33,430 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,042 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,867 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,241 |
| Romania Country Quiz | 0 | - | 4.63 | 53,594 |
| History of Austria | 0 | - | 4.70 | 17,808 |
| Geography of the French Empire | 0 | - | 4.45 | 27,001 |
| The French Revolution | 0 | - | 4.46 | 23,871 |
| France Multiple Choice | 0 | - | 4.38 | 40,686 |
| History of France | 0 | - | 4.59 | 56,650 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,430 |
| Mediterranean Foods | 0 | - | 3.80 | 11,419 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,918 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,271 |
| The Vikings! | 0 | - | 4.46 | 28,290 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,906 |
| The Portuguese Empire | 0 | - | 4.58 | 12,032 |
| American to British Word Translation | 0 | - | 4.13 | 138,360 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,819 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,461 |
| Champions League Top 4 | 0 | - | 4.77 | 135,038 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,444,188 |
| Asia Map Quiz | 0 | - | 4.99 | 911,332 |
| Sushi Translation | 0 | - | 4.08 | 13,922 |
