| Country Chain | 0 | - | 4.96 | 206,862 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 146,151 |
| Solve the Secret Country #2 | 0 | - | 4.88 | 101,836 |
| Anagram Chain - Countries | 0 | - | 4.99 | 106,091 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 53,640 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,760,676 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 375,336 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,006,530 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 408,755 |
| Countries with Four Letters | 0 | - | 4.99 | 385,280 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,344,404 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,420,168 |
| Capital Cities Chain | 0 | - | 4.87 | 76,049 |
| Sahara Desert Countries | 0 | - | 4.98 | 142,185 |
| Himalayan Countries | 0 | - | 4.95 | 119,179 |
| Andean Countries | 0 | - | 4.92 | 66,825 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,367 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,776 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,417 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 58,061 |
| Danube Countries | 0 | - | 4.97 | 60,017 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,739 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 81,052 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,646 |
| Countries with the Worst Passports | 0 | - | 4.92 | 61,509 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 134,952 |
| European Landlocked Countries | 0 | - | 4.99 | 140,137 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,608 |
| Countries with the Most Species | 0 | - | 4.99 | 91,802 |
| Countries 197 to 205 | 0 | - | 4.87 | 62,068 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,354 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,475 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,864 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 171,330 |
| Countries that Use the Peso | 0 | - | 4.84 | 49,004 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 156,570 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,424 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,887 |
| Countries in the Alps | 0 | - | 4.86 | 109,231 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,872 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 96,128 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,773 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,687 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,702 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,223 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,154 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,170 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,469 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,105 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,218 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,792 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 38,672 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,485 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,188 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,840 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 107,345 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,249 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,181 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 218,655 |
| World Countries - Blind Typing | 0 | - | 5.00 | 83,043 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 44,520 |
| Largest Countries By Category | 0 | - | 4.97 | 150,200 |
| Countries by Emojis | 0 | - | 4.99 | 219,185 |
| Countries by Countries | 0 | - | 4.96 | 57,840 |
| Countries With One Word And Two O's | 0 | - | 4.95 | 50,667 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,426 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,393 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 83,018 |
| Islands by Country #1 | 0 | - | 4.87 | 168,720 |
| Regions of Countries #1 | 0 | - | 4.96 | 154,701 |
| Regions of Countries #2 | 0 | - | 4.95 | 118,948 |
| Regions of Countries #3 | 0 | - | 4.85 | 86,969 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 196,948 |
| Name a Valid Country #3 | 0 | - | 4.98 | 223,136 |
| Name a Valid Country #1 | 0 | - | 4.99 | 245,622 |
| Name a Valid Country #2 | 0 | - | 4.98 | 209,927 |
| Name a Valid Country #4 | 0 | - | 4.97 | 217,837 |
| Name a Valid Country #5 | 0 | - | 4.99 | 173,510 |
| Name a Valid Country #6 | 0 | - | 4.94 | 111,851 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 357,331 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 378,442 |
| Island Countries Quiz | 0 | - | 4.99 | 686,402 |
| Biggest Countries by Area | 0 | - | 5.00 | 981,451 |
| Northernmost Countries | 0 | - | 4.99 | 340,431 |
| Countries of South America | 0 | - | 5.00 | 851,355 |
| Countries of Oceania | 0 | - | 5.00 | 962,410 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,703,961 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 171,559 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.92 | 83,667 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 105,476 |
| Countries with the Most McDonald's Locations | 0 | - | 4.81 | 107,265 |
| Biggest Countries with No McDonald's | 0 | - | 4.85 | 85,017 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,232,073 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 41,364 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.90 | 92,101 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 299,942 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 219,559 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 210,071 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 178,840 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.96 | 113,519 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 98,891 |
| Random Countries by Borders | 0 | - | 4.99 | 70,444 |
| Random Name a Valid Country | 0 | - | 4.99 | 190,595 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 156,162 |
| Countries with Megacities | 0 | - | 4.99 | 215,283 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,850 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 105,251 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 122,269 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 72,039 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 267,026 |
| Countries by Official Language | 0 | - | 4.95 | 182,414 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 279,758 |
| Countries in their Native Language | 0 | - | 4.98 | 187,345 |
| Independence from Whom | 0 | - | 4.99 | 197,796 |
| Subdivisions by Country | 0 | - | 4.86 | 48,222 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 122,132 |
| Megadiverse Countries | 0 | - | 4.96 | 129,959 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 120,468 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,239 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,128 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 154,197 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,911 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 85,119 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,427 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,657 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,135 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 65,270 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,218 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,413 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,761 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 71,652 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,029 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 96,059 |
| World Map Quiz | 0 | - | 4.88 | 56,505 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 131,817 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,938 |
| Southernmost Countries of the World | 0 | - | 4.99 | 216,935 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,709 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 115,189 |
| Countries With the Most Languages | 0 | - | 4.88 | 187,238 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,919 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,706 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,392 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,792 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,937 |
| Widest Countries East to West | 0 | - | 4.92 | 123,836 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,989 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,414 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,117 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,687 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 124,314 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,650 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,825 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,364 |
| Countries with Double Letters | 0 | - | 4.96 | 80,428 |
| Countries that End in N | 0 | - | 4.93 | 144,531 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 243,527 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,762 |
| Countries with W | 0 | - | 4.97 | 132,123 |
| Countries with Z | 0 | - | 4.98 | 273,944 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,379 |
| Countries That End in U | 0 | - | 4.95 | 113,445 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 98,967 |
| Countries that End in O | 0 | - | 4.92 | 153,079 |
| Countries that End in R | 0 | - | 4.84 | 99,498 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,491 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,575 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,438 |
| Countries by Last Two Letters | 0 | - | 4.89 | 121,186 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,703 |
| Countries That End in Y | 0 | - | 4.91 | 181,268 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 187,939 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,682 |
| Countries that End in I | 0 | - | 4.92 | 117,064 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,344 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,712 |
| Countries That End in NIA | 0 | - | 4.92 | 104,614 |
| Countries That End in BIA | 0 | - | 4.92 | 141,684 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 160,455 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,083 |
| Countries That End in RIA | 0 | - | 4.89 | 104,939 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 105,186 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 213,311 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 126,223 |
| Divided Country Name Puzzle #3 | 0 | - | 4.90 | 117,942 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 83,945 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 47,974 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 97,035 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 119,187 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,812 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,820 |
| Countries that End in L | 0 | - | 4.94 | 151,109 |
| "Land" Countries | 0 | - | 4.98 | 298,580 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 195,939 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,762 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,473 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,176 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,915 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 217,906 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,411 |
