| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,130 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 745,248 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,682 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,837 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,914 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,313 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,184 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,961,698 |
| Landlocked Countries | 0 | - | 4.99 | 427,158 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,127,907 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,044 |
| Countries with Four Letters | 0 | - | 4.99 | 426,392 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,811,745 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,876 |
| Himalayan Countries | 0 | - | 4.93 | 140,787 |
| Andean Countries | 0 | - | 4.94 | 85,776 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,903 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,467 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,452 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,676 |
| Danube Countries | 0 | - | 4.97 | 72,533 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,788 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,969 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,422 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,895 |
| European Landlocked Countries | 0 | - | 4.99 | 147,730 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,522 |
| Countries with the Most Species | 0 | - | 4.99 | 103,640 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,627 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,812 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,950 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,283 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,917 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,649 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,670 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,121 |
| Countries in the Alps | 0 | - | 4.87 | 118,955 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,963 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,108 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,050 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,161 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,117 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,382 |
| Country Chain | 0 | - | 4.96 | 218,644 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,578 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,983 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,507 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,306 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,949 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,825 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,664 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,914 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,014 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,130 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,724 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,384 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,829 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,256 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,471 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,607 |
| Largest Countries By Category | 0 | - | 4.97 | 159,072 |
| Countries by Emojis | 0 | - | 4.99 | 242,815 |
| Countries by Countries | 0 | - | 4.97 | 63,795 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,697 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,303 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,421 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,443 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,704 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,218 |
| Islands by Country #1 | 0 | - | 4.90 | 176,478 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,333 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,649 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,464 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,487 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,194 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,355 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,034 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,568 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,563 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,374 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,618 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,524 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,022 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,303 |
| Island Countries | 0 | - | 4.99 | 712,975 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,054 |
| Northernmost Countries | 0 | - | 4.99 | 364,556 |
| Countries of South America | 0 | - | 5.00 | 934,129 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,339 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,719 |
| "Land" Countries | 0 | - | 4.98 | 338,959 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,888 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,812 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,763 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,180 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,015 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,802 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,664 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,860 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,579 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,425 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,992 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,325 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,622 |
| Random Countries by Borders | 0 | - | 4.99 | 83,189 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,876 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,472 |
| Countries with Megacities | 0 | - | 4.99 | 267,790 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,122 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,326 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,455 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,422 |
| Countries by Official Language | 0 | - | 4.95 | 196,197 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,919 |
| Countries in their Native Language | 0 | - | 4.99 | 199,944 |
| Independence from Whom | 0 | - | 4.99 | 213,384 |
| Subdivisions by Country | 0 | - | 4.87 | 50,663 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,641 |
| Megadiverse Countries | 0 | - | 4.96 | 148,826 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,124 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,573 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,800 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,257 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,452 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,921 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,269 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,620 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,159 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,284 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,746 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,481 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,502 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,215 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,634 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,960 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,705 |
| World Map Quiz | 0 | - | 4.81 | 65,916 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,845 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,801 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,496 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,221 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,694 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,901 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,540 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,653 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,844 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,761 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,930 |
| Widest Countries East to West | 0 | - | 4.92 | 130,839 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,627 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,388 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,557 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,151 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,099 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,603 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,532 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,921 |
| Countries with Double Letters | 0 | - | 4.96 | 97,598 |
| Countries that End in N | 0 | - | 4.95 | 172,605 |
| Countries with Five Letters | 0 | - | 4.96 | 284,607 |
| Countries with Six Letters | 0 | - | 4.94 | 214,934 |
| Countries with W | 0 | - | 4.96 | 161,293 |
| Countries with Z | 0 | - | 4.98 | 292,970 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,653 |
| Countries That End in U | 0 | - | 4.95 | 121,378 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,407 |
| Countries that End in O | 0 | - | 4.92 | 160,366 |
| Countries that End in R | 0 | - | 4.87 | 119,273 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,055 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,130 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,254 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,170 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,701 |
| Countries That End in Y | 0 | - | 4.91 | 186,169 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,211 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,407 |
| Countries that End in I | 0 | - | 4.94 | 135,418 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,222 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,139 |
| Countries That End in NIA | 0 | - | 4.92 | 110,154 |
| Countries That End in BIA | 0 | - | 4.93 | 149,730 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,922 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,892 |
| Countries That End in RIA | 0 | - | 4.93 | 127,141 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,536 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,916 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,379 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,838 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,392 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,918 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,447 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,603 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,044 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,729 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,899 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,600 |
| Countries that End in L | 0 | - | 4.94 | 157,239 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,553 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,377 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,879 |
