| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,655,983 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,850,684 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,919,499 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,126,437 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,803 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,434 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,623 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,802 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,054 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,895 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,287 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,151 |
| Countries with Four Letters | 0 | - | 4.99 | 426,072 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,181 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,053 |
| Landlocked Countries | 0 | - | 4.99 | 426,540 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,162 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,526 |
| Country Chain | 0 | - | 4.96 | 218,543 |
| Countries by Emojis | 0 | - | 4.99 | 242,623 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,640 |
| Pixelated World Map | 0 | - | 5.00 | 144,156 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,006 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,643 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,932 |
| Islands by Country #1 | 0 | - | 4.90 | 176,424 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,290 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,609 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,430 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,807,825 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,260 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,842 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,181 |
| Name a Valid Country #1 | 0 | - | 4.99 | 295,638 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,363 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,358 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,217 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,433 |
| Name a Valid Country #7 | 0 | - | 4.91 | 131,986 |
| Name a Valid Country #8 | 0 | - | 4.86 | 101,123 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 743,938 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,544 |
| Himalayan Countries | 0 | - | 4.93 | 140,478 |
| Andean Countries | 0 | - | 4.94 | 85,618 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,747 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,213 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,313 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,546 |
| Danube Countries | 0 | - | 4.97 | 72,471 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,680 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,900 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,262 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,735 |
| European Landlocked Countries | 0 | - | 4.99 | 147,671 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,396 |
| Countries with the Most Species | 0 | - | 4.99 | 103,605 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,509 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,791 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,912 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,876 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,616 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,070 |
| Countries in the Alps | 0 | - | 4.87 | 118,857 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,790 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,990 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,010 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,091 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,038 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,320 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,470 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,925 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,464 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,235 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,914 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,782 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,611 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,849 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,949 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,987 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,658 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,552 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,743 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,952 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,307 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,551 |
| Largest Countries By Category | 0 | - | 4.97 | 158,949 |
| Countries by Countries | 0 | - | 4.96 | 63,708 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,332 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,426 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,689 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,470 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,152 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,967 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,847 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,993 |
| Island Countries | 0 | - | 4.99 | 712,757 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,362 |
| Northernmost Countries | 0 | - | 4.99 | 364,280 |
| Countries of South America | 0 | - | 5.00 | 933,392 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,372 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,948 |
| "Land" Countries | 0 | - | 4.98 | 338,544 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,818 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,770 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,710 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,139 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,978 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,256 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,552 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,582 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,790 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,343 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,238 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,850 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,197 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 141,669 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,234 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 81,486 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,582 |
| Random Countries by Borders | 0 | - | 4.99 | 83,140 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,758 |
| Name a Valid Island Country | 0 | - | 4.97 | 130,280 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,314 |
| Countries with Megacities | 0 | - | 4.99 | 267,451 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,983 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,227 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,312 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,332 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,942 |
| Countries by Official Language | 0 | - | 4.95 | 196,118 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,779 |
| Countries in their Native Language | 0 | - | 4.99 | 199,837 |
| Independence from Whom | 0 | - | 4.99 | 213,222 |
| Subdivisions by Country | 0 | - | 4.87 | 50,642 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,558 |
| Megadiverse Countries | 0 | - | 4.96 | 144,657 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,032 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,555 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,748 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,238 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,346 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,889 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,182 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,591 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,120 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,275 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,638 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,431 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,463 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,175 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,602 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,913 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 102,089 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,531 |
| World Map Quiz | 0 | - | 4.81 | 65,822 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,541 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,757 |
| Countries by Founding Story | 0 | - | 4.95 | 77,853 |
| Countries by Road Signs | 0 | - | 4.98 | 54,393 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,378 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,155 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,621 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,731 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,483 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,602 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,788 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,723 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,847 |
| Widest Countries East to West | 0 | - | 4.92 | 130,778 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,616 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,304 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,535 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,096 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,037 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,533 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,517 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,906 |
| Countries with Double Letters | 0 | - | 4.96 | 97,216 |
| Countries that End in N | 0 | - | 4.95 | 172,296 |
| Countries with Five Letters | 0 | - | 4.96 | 284,178 |
| Countries with Six Letters | 0 | - | 4.94 | 214,632 |
| Countries with W | 0 | - | 4.96 | 161,052 |
| Countries with Z | 0 | - | 4.98 | 292,616 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,390 |
| Countries That End in U | 0 | - | 4.95 | 121,248 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,197 |
| Countries that End in O | 0 | - | 4.92 | 160,268 |
| Countries that End in R | 0 | - | 4.87 | 119,216 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,979 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,964 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,226 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,877 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,809 |
| Countries That End in Y | 0 | - | 4.91 | 186,113 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,536 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,326 |
| Countries that End in I | 0 | - | 4.94 | 135,362 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,695 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,089 |
| Countries That End in NIA | 0 | - | 4.92 | 110,098 |
