| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,626,578 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 721,473 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,948 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,558 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,607 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,716 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,715 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,500,602 |
| Landlocked Countries | 0 | - | 4.99 | 421,004 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,102,786 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,088 |
| Countries with Four Letters | 0 | - | 4.99 | 422,784 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,771,183 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,987 |
| Himalayan Countries | 0 | - | 4.95 | 138,294 |
| Andean Countries | 0 | - | 4.95 | 84,366 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,589 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,502 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,215 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,623 |
| Danube Countries | 0 | - | 4.97 | 71,898 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,868 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,289 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,085 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,559 |
| European Landlocked Countries | 0 | - | 4.99 | 147,028 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,457 |
| Countries with the Most Species | 0 | - | 4.99 | 103,147 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,605 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,533 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,674 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,808 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,468 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 182,844 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,150 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,554 |
| Countries in the Alps | 0 | - | 4.87 | 118,037 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,287 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,828 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,579 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,504 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,378 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,871 |
| Country Chain | 0 | - | 4.96 | 217,188 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,537 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,395 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,111 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,742 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,585 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,444 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,115 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,383 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,412 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,660 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,210 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,724 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,882 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,441 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,815 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,141 |
| Largest Countries By Category | 0 | - | 4.97 | 158,012 |
| Countries by Emojis | 0 | - | 4.99 | 239,934 |
| Countries by Countries | 0 | - | 4.96 | 63,078 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,993 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,928 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,533 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,237 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,529 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,564 |
| Islands by Country #1 | 0 | - | 4.88 | 175,342 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,573 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,931 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,761 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,964 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,519 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,206 |
| Name a Valid Country #1 | 0 | - | 4.99 | 290,288 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,927 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,792 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,181 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,573 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,714 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,215 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,592 |
| Island Countries | 0 | - | 4.99 | 710,648 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,543 |
| Northernmost Countries | 0 | - | 4.99 | 361,495 |
| Countries of South America | 0 | - | 5.00 | 925,807 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,020 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,873,640 |
| "Land" Countries | 0 | - | 4.98 | 336,978 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,009 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,248 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,172 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,794 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,511 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,043 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,774 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,247 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,277 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,217 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,328 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,934 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,129 |
| Random Countries by Borders | 0 | - | 4.99 | 82,502 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,185 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,621 |
| Countries with Megacities | 0 | - | 4.99 | 263,853 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,472 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,327 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,743 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,368 |
| Countries by Official Language | 0 | - | 4.95 | 195,040 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,100 |
| Countries in their Native Language | 0 | - | 4.99 | 198,543 |
| Independence from Whom | 0 | - | 4.99 | 211,849 |
| Subdivisions by Country | 0 | - | 4.86 | 50,385 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,518 |
| Megadiverse Countries | 0 | - | 4.96 | 134,925 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,904 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,285 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,869 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,073 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,986 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,527 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,323 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,970 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,593 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,050 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,457 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,817 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,129 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,907 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,290 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,437 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,873 |
| World Map Quiz | 0 | - | 4.81 | 64,944 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,693 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,246 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,881 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,154 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,877 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,923 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,793 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,919 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,211 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,388 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,494 |
| Widest Countries East to West | 0 | - | 4.92 | 129,561 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,425 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,247 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,085 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,683 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,469 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,755 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,332 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,779 |
| Countries with Double Letters | 0 | - | 4.97 | 95,918 |
| Countries that End in N | 0 | - | 4.95 | 170,832 |
| Countries with Five Letters | 0 | - | 4.96 | 281,936 |
| Countries with Six Letters | 0 | - | 4.94 | 213,251 |
| Countries with W | 0 | - | 4.97 | 160,103 |
| Countries with Z | 0 | - | 4.98 | 291,108 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,461 |
| Countries That End in U | 0 | - | 4.95 | 120,721 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,233 |
| Countries that End in O | 0 | - | 4.92 | 159,426 |
| Countries that End in R | 0 | - | 4.87 | 118,896 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,661 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,839 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,525 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,362 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,245 |
| Countries That End in Y | 0 | - | 4.91 | 185,802 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,719 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,717 |
| Countries that End in I | 0 | - | 4.94 | 135,026 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,891 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,748 |
| Countries That End in NIA | 0 | - | 4.92 | 109,695 |
| Countries That End in BIA | 0 | - | 4.93 | 149,088 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,972 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,301 |
| Countries That End in RIA | 0 | - | 4.93 | 126,730 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,890 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,284 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,526 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,926 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,501 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,499 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,912 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,411 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,405 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,350 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,142 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,831 |
| Countries that End in L | 0 | - | 4.94 | 156,741 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,131 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,237 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,948 |
