| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,658,061 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 744,750 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,123 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 388,704 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,947,242 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,127,442 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,956 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,600 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,761 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,870 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,337 |
| Countries with Four Letters | 0 | - | 4.99 | 426,276 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,277 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,148 |
| Landlocked Countries | 0 | - | 4.99 | 426,964 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 983,286 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,241 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,603 |
| Country Chain | 0 | - | 4.96 | 218,613 |
| Countries by Emojis | 0 | - | 4.99 | 242,745 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,684 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,182 |
| Islands by Country #1 | 0 | - | 4.90 | 176,461 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,327 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,632 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,455 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,315 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,440 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,287 |
| Name a Valid Country #1 | 0 | - | 4.99 | 295,892 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,504 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,488 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,319 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,553 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,782 |
| Himalayan Countries | 0 | - | 4.93 | 140,700 |
| Andean Countries | 0 | - | 4.94 | 85,737 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,862 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,406 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,417 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,641 |
| Danube Countries | 0 | - | 4.97 | 72,518 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,745 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,942 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,382 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,831 |
| European Landlocked Countries | 0 | - | 4.99 | 147,707 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,485 |
| Countries with the Most Species | 0 | - | 4.99 | 103,627 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,584 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,803 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,938 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,904 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,658 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,106 |
| Countries in the Alps | 0 | - | 4.87 | 118,928 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,919 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,063 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,040 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,139 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,091 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,362 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,545 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,971 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,497 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,288 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,938 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,816 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,651 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,900 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,996 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,088 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,699 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,182 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,803 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,172 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,408 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,593 |
| Largest Countries By Category | 0 | - | 4.97 | 159,034 |
| Countries by Countries | 0 | - | 4.97 | 63,782 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,389 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,439 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,699 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,198 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,319 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,973 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,182 |
| Island Countries | 0 | - | 4.99 | 712,888 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,820 |
| Northernmost Countries | 0 | - | 4.99 | 364,457 |
| Countries of South America | 0 | - | 5.00 | 933,854 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,910 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,039 |
| "Land" Countries | 0 | - | 4.98 | 338,874 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,865 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,797 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,742 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,161 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,000 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,197 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,635 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,835 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,492 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,345 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,942 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,284 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 141,812 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 81,585 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,608 |
| Random Countries by Borders | 0 | - | 4.99 | 83,177 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,836 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.96 | 243,302 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,425 |
| Countries with Megacities | 0 | - | 4.99 | 267,676 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,072 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,288 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,414 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,398 |
| Random World Capitals on a Map | 0 | - | 4.93 | 135,979 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,976 |
| Countries by Official Language | 0 | - | 4.95 | 196,165 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,865 |
| Countries in their Native Language | 0 | - | 4.99 | 199,909 |
| Independence from Whom | 0 | - | 4.99 | 213,332 |
| Subdivisions by Country | 0 | - | 4.87 | 50,653 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,617 |
| Megadiverse Countries | 0 | - | 4.96 | 148,068 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,085 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,569 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,777 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,248 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,418 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,911 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,242 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,607 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,144 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,708 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,463 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,488 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,198 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,619 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,943 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 102,114 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,644 |
| World Map Quiz | 0 | - | 4.81 | 65,880 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,734 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,779 |
| Countries by Founding Story | 0 | - | 4.95 | 77,892 |
| Countries by Road Signs | 0 | - | 4.98 | 54,423 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,442 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,199 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,668 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,846 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,525 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,631 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,827 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,750 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,907 |
| Widest Countries East to West | 0 | - | 4.92 | 130,809 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,624 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,356 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,547 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,131 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,073 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,585 |
| 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 | 97,520 |
| Countries that End in N | 0 | - | 4.95 | 172,546 |
| Countries with Five Letters | 0 | - | 4.96 | 284,514 |
| Countries with Six Letters | 0 | - | 4.94 | 214,867 |
| Countries with W | 0 | - | 4.96 | 161,245 |
| Countries with Z | 0 | - | 4.98 | 292,894 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,604 |
| Countries That End in U | 0 | - | 4.95 | 121,352 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,359 |
| Countries that End in O | 0 | - | 4.92 | 160,346 |
| Countries that End in R | 0 | - | 4.87 | 119,260 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,040 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,086 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 184,181 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,119 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,603 |
| Countries That End in Y | 0 | - | 4.91 | 186,157 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,125 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,382 |
| Countries that End in I | 0 | - | 4.94 | 135,399 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,157 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,122 |
| Countries That End in NIA | 0 | - | 4.92 | 110,138 |
| Countries That End in BIA | 0 | - | 4.93 | 149,700 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,898 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,870 |
| Countries That End in RIA | 0 | - | 4.93 | 127,121 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,511 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,870 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,338 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,799 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,353 |
