| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,658,180 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 744,805 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,135 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 388,717 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,948,700 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,127,491 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,962 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,607 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,765 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,875 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,369 |
| Countries with Four Letters | 0 | - | 4.99 | 426,289 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,278 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,148 |
| Landlocked Countries | 0 | - | 4.99 | 426,986 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 983,305 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,244 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,609 |
| Country Chain | 0 | - | 4.96 | 218,617 |
| Countries by Emojis | 0 | - | 4.99 | 242,750 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,684 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,195 |
| Islands by Country #1 | 0 | - | 4.90 | 176,464 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,327 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,637 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,455 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,477 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,444 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,295 |
| Name a Valid Country #1 | 0 | - | 4.99 | 295,908 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,512 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,495 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,323 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,557 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,793 |
| Himalayan Countries | 0 | - | 4.93 | 140,710 |
| Andean Countries | 0 | - | 4.94 | 85,743 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,867 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,411 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,425 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,646 |
| Danube Countries | 0 | - | 4.97 | 72,521 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,746 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,944 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,385 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,838 |
| European Landlocked Countries | 0 | - | 4.99 | 147,709 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,488 |
| Countries with the Most Species | 0 | - | 4.99 | 103,628 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,591 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,804 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,939 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,904 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,659 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,108 |
| Countries in the Alps | 0 | - | 4.87 | 118,930 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,922 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,068 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,044 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,143 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,094 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,363 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,547 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,972 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,497 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,289 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,941 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,818 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,655 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,904 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,999 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,090 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,702 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,212 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,805 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,180 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,417 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,597 |
| Largest Countries By Category | 0 | - | 4.97 | 159,037 |
| Countries by Countries | 0 | - | 4.97 | 63,786 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,393 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,440 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,701 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,199 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,344 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,979 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,195 |
| Island Countries | 0 | - | 4.99 | 712,898 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,841 |
| Northernmost Countries | 0 | - | 4.99 | 364,469 |
| Countries of South America | 0 | - | 5.00 | 933,911 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,963 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,108 |
| "Land" Countries | 0 | - | 4.98 | 338,887 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,868 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,798 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,742 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,165 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,003 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,240 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,637 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,839 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,498 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,351 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,949 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,289 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 141,822 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 81,590 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,611 |
| Random Countries by Borders | 0 | - | 4.99 | 83,179 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,841 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.96 | 243,308 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,428 |
| Countries with Megacities | 0 | - | 4.99 | 267,687 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,075 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,290 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,416 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,404 |
| Random World Capitals on a Map | 0 | - | 4.93 | 135,983 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,976 |
| Countries by Official Language | 0 | - | 4.95 | 196,166 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,870 |
| Countries in their Native Language | 0 | - | 4.99 | 199,914 |
| Independence from Whom | 0 | - | 4.99 | 213,340 |
| Subdivisions by Country | 0 | - | 4.87 | 50,653 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,618 |
| Megadiverse Countries | 0 | - | 4.96 | 148,132 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,093 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,569 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,781 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,248 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,425 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,911 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,245 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,608 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,145 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,711 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,466 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,491 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,201 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,620 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,947 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 102,121 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,649 |
| World Map Quiz | 0 | - | 4.81 | 65,886 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,745 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,782 |
| Countries by Founding Story | 0 | - | 4.95 | 77,892 |
| Countries by Road Signs | 0 | - | 4.98 | 54,426 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,448 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,201 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,671 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,849 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,528 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,634 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,830 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,750 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,911 |
| Widest Countries East to West | 0 | - | 4.92 | 130,812 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,624 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,360 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,548 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,136 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,075 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,589 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,526 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,916 |
| Countries with Double Letters | 0 | - | 4.96 | 97,528 |
| Countries that End in N | 0 | - | 4.95 | 172,551 |
| Countries with Five Letters | 0 | - | 4.96 | 284,523 |
| Countries with Six Letters | 0 | - | 4.94 | 214,873 |
| Countries with W | 0 | - | 4.96 | 161,251 |
| Countries with Z | 0 | - | 4.98 | 292,903 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,609 |
| Countries That End in U | 0 | - | 4.95 | 121,357 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,363 |
| Countries that End in O | 0 | - | 4.92 | 160,347 |
| Countries that End in R | 0 | - | 4.87 | 119,261 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,042 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,088 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 184,317 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,122 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,613 |
| Countries That End in Y | 0 | - | 4.91 | 186,158 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,134 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,383 |
| Countries that End in I | 0 | - | 4.94 | 135,403 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,163 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,123 |
| Countries That End in NIA | 0 | - | 4.92 | 110,139 |
| Countries That End in BIA | 0 | - | 4.93 | 149,702 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,901 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,872 |
| Countries That End in RIA | 0 | - | 4.93 | 127,123 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,518 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,877 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,342 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,802 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,357 |
