| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,663,076 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 747,126 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,924 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 121,075 |
| Anagram Chain - Countries | 0 | - | 4.98 | 118,051 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,489 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,338 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,016,810 |
| Landlocked Countries | 0 | - | 4.99 | 427,836 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,129,697 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,341 |
| Countries with Four Letters | 0 | - | 4.99 | 426,762 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,816,558 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,190 |
| Himalayan Countries | 0 | - | 4.93 | 141,071 |
| Andean Countries | 0 | - | 4.94 | 85,930 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,032 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,673 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,582 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,781 |
| Danube Countries | 0 | - | 4.97 | 72,625 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,892 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,034 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,560 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,039 |
| European Landlocked Countries | 0 | - | 4.99 | 147,836 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,628 |
| Countries with the Most Species | 0 | - | 4.99 | 103,682 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,735 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,838 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,982 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,449 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,969 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,807 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,719 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,188 |
| Countries in the Alps | 0 | - | 4.87 | 119,070 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,156 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,274 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,101 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,231 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,204 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,436 |
| Country Chain | 0 | - | 4.96 | 218,750 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,653 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,048 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,546 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,359 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,987 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,858 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,720 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,972 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,073 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,296 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,773 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,858 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,929 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,620 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,711 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,650 |
| Largest Countries By Category | 0 | - | 4.97 | 159,212 |
| Countries by Emojis | 0 | - | 4.99 | 243,037 |
| Countries by Countries | 0 | - | 4.97 | 63,869 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,768 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,640 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,551 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,465 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,724 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,307 |
| Islands by Country #1 | 0 | - | 4.90 | 176,931 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,402 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,720 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,518 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,733 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.91 | 281,455 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,568 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,523 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,814 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,794 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,615 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,833 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,159 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,215 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,727 |
| Island Countries | 0 | - | 4.99 | 713,278 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,885 |
| Northernmost Countries | 0 | - | 4.99 | 364,898 |
| Countries of South America | 0 | - | 5.00 | 935,095 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,600 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,138 |
| "Land" Countries | 0 | - | 4.98 | 339,211 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,983 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,886 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,831 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,255 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,078 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,871 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,783 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,954 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,809 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,616 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 194,178 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,446 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,674 |
| Random Countries by Borders | 0 | - | 4.99 | 83,254 |
| Random Name a Valid Country | 0 | - | 4.99 | 207,014 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,697 |
| Countries with Megacities | 0 | - | 4.99 | 268,252 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,327 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,429 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,677 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,553 |
| Countries by Official Language | 0 | - | 4.95 | 196,357 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,119 |
| Countries in their Native Language | 0 | - | 4.99 | 200,065 |
| Independence from Whom | 0 | - | 4.99 | 213,579 |
| Subdivisions by Country | 0 | - | 4.87 | 50,685 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,779 |
| Megadiverse Countries | 0 | - | 4.96 | 149,854 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,232 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,598 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,870 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,275 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,571 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,969 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,390 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,664 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,223 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,303 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,927 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,530 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,540 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,255 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,682 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,017 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,932 |
| World Map Quiz | 0 | - | 4.81 | 65,995 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,242 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,872 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,660 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,307 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,780 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,094 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,630 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,747 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,913 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,793 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,027 |
| Widest Countries East to West | 0 | - | 4.92 | 130,917 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,640 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,486 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,591 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,211 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,505 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,666 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,555 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,812 |
| Countries that End in N | 0 | - | 4.95 | 172,809 |
| Countries with Five Letters | 0 | - | 4.96 | 284,884 |
| Countries with Six Letters | 0 | - | 4.94 | 215,149 |
| Countries with W | 0 | - | 4.96 | 161,449 |
| Countries with Z | 0 | - | 4.98 | 293,209 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,819 |
| Countries That End in U | 0 | - | 4.95 | 121,467 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,573 |
| Countries that End in O | 0 | - | 4.92 | 160,434 |
| Countries that End in R | 0 | - | 4.87 | 119,320 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,093 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,291 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,806 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,311 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,997 |
| Countries That End in Y | 0 | - | 4.91 | 186,213 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,540 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,502 |
| Countries that End in I | 0 | - | 4.94 | 135,464 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,478 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,191 |
| Countries That End in NIA | 0 | - | 4.92 | 110,207 |
| Countries That End in BIA | 0 | - | 4.93 | 149,798 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,017 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,963 |
| Countries That End in RIA | 0 | - | 4.93 | 127,206 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,603 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,100 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,487 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,950 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,499 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,968 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,531 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,626 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,141 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,788 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,990 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,699 |
| Countries that End in L | 0 | - | 4.94 | 157,304 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,857 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,395 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,926 |
