| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,633,114 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 722,855 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,387 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,944 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,809 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,005 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,933 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,597,082 |
| Landlocked Countries | 0 | - | 4.99 | 422,152 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,105,631 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,566 |
| Countries with Four Letters | 0 | - | 4.99 | 423,365 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,780,077 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,565 |
| Himalayan Countries | 0 | - | 4.94 | 138,828 |
| Andean Countries | 0 | - | 4.93 | 84,662 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,863 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,901 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,493 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,839 |
| Danube Countries | 0 | - | 4.97 | 72,036 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,044 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,444 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,351 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,833 |
| European Landlocked Countries | 0 | - | 4.99 | 147,165 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,680 |
| Countries with the Most Species | 0 | - | 4.99 | 103,264 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,795 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,603 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,729 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,082 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,556 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,376 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,247 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,685 |
| Countries in the Alps | 0 | - | 4.87 | 118,234 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,225 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,065 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,674 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,615 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,542 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,961 |
| Country Chain | 0 | - | 4.96 | 217,413 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,696 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,514 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,192 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,868 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,667 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,537 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,242 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,493 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,544 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,954 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,332 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,010 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,119 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,038 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,178 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,249 |
| Largest Countries By Category | 0 | - | 4.97 | 158,248 |
| Countries by Emojis | 0 | - | 4.99 | 240,451 |
| Countries by Countries | 0 | - | 4.96 | 63,253 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,114 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,787 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,711 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,297 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,571 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,690 |
| Islands by Country #1 | 0 | - | 4.88 | 175,486 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,647 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,044 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,813 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 217,425 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,870 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,685 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,305 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,509 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,681 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,679 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,978 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,716 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,554 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,437 |
| Island Countries | 0 | - | 4.99 | 711,109 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,108 |
| Northernmost Countries | 0 | - | 4.99 | 362,042 |
| Countries of South America | 0 | - | 5.00 | 927,612 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,307 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,895 |
| "Land" Countries | 0 | - | 4.98 | 337,394 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,183 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,357 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,277 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,864 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,609 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,140 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,948 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,350 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,713 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,630 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,650 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,144 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,204 |
| Random Countries by Borders | 0 | - | 4.99 | 82,653 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,449 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,943 |
| Countries with Megacities | 0 | - | 4.99 | 264,657 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,774 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,495 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,039 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,565 |
| Countries by Official Language | 0 | - | 4.95 | 195,286 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,420 |
| Countries in their Native Language | 0 | - | 4.99 | 199,078 |
| Independence from Whom | 0 | - | 4.99 | 212,147 |
| Subdivisions by Country | 0 | - | 4.86 | 50,437 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,762 |
| Megadiverse Countries | 0 | - | 4.96 | 135,028 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,123 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,368 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,245 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,112 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,161 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,605 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,499 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,044 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,669 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,152 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,701 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,895 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,217 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,975 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,362 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,504 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,238 |
| World Map Quiz | 0 | - | 4.81 | 65,117 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,375 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,367 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,125 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,305 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,016 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,251 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,916 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,028 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,315 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,450 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,587 |
| Widest Countries East to West | 0 | - | 4.92 | 129,666 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,462 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,396 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,126 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,779 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,612 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,884 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,378 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,801 |
| Countries with Double Letters | 0 | - | 4.96 | 96,262 |
| Countries that End in N | 0 | - | 4.95 | 171,150 |
| Countries with Five Letters | 0 | - | 4.96 | 282,535 |
| Countries with Six Letters | 0 | - | 4.94 | 213,585 |
| Countries with W | 0 | - | 4.97 | 160,342 |
| Countries with Z | 0 | - | 4.98 | 291,490 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,719 |
| Countries That End in U | 0 | - | 4.95 | 120,862 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,478 |
| Countries that End in O | 0 | - | 4.92 | 159,516 |
| Countries that End in R | 0 | - | 4.87 | 118,974 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,734 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,122 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,704 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,482 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,407 |
| Countries That End in Y | 0 | - | 4.91 | 185,881 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,932 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,866 |
| Countries that End in I | 0 | - | 4.94 | 135,101 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,124 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,826 |
| Countries That End in NIA | 0 | - | 4.92 | 109,791 |
| Countries That End in BIA | 0 | - | 4.93 | 149,222 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,132 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,435 |
| Countries That End in RIA | 0 | - | 4.93 | 126,810 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,028 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,646 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,720 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,141 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,695 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,582 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,036 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,447 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,530 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,423 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,300 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,990 |
| Countries that End in L | 0 | - | 4.94 | 156,848 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,831 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,269 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,033 |
