| Landlocked Countries | 0 | - | 4.99 | 418,960 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,335,584 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,002 |
| Himalayan Countries | 0 | - | 4.94 | 137,436 |
| Andean Countries | 0 | - | 4.95 | 83,945 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,234 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,664 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,835 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,355 |
| Danube Countries | 0 | - | 4.97 | 71,667 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,556 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,058 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,658 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,737 |
| European Landlocked Countries | 0 | - | 4.99 | 146,778 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,142 |
| Countries with the Most Species | 0 | - | 4.99 | 102,911 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,273 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,433 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,589 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,304 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,994 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,368 |
| Countries in the Alps | 0 | - | 4.87 | 117,690 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,136 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,368 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,424 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,987 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,098 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,595 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,287 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,190 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,970 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,555 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,479 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,338 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,927 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,190 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,208 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,191 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,063 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,572 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,532 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,386 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,233 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,000 |
| Largest Countries By Category | 0 | - | 4.97 | 157,643 |
| Countries by Countries | 0 | - | 4.96 | 62,838 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,214 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,161 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,469 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,324 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,007 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,015 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,613 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,117 |
| Island Countries | 0 | - | 4.99 | 709,765 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,063 |
| Northernmost Countries | 0 | - | 4.99 | 360,478 |
| Countries of South America | 0 | - | 5.00 | 922,926 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,079 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,404 |
| "Land" Countries | 0 | - | 4.98 | 335,800 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,024 |
| Countries with Megacities | 0 | - | 4.99 | 260,066 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,898 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,995 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,175 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,005 |
| Countries by Official Language | 0 | - | 4.95 | 194,644 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,539 |
| Countries in their Native Language | 0 | - | 4.99 | 198,189 |
| Independence from Whom | 0 | - | 4.99 | 211,321 |
| Subdivisions by Country | 0 | - | 4.86 | 50,287 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,710 |
| Megadiverse Countries | 0 | - | 4.96 | 134,769 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,547 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,185 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,756 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,018 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,714 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,381 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,981 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,845 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,487 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,989 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,979 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,718 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,995 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,775 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,157 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,326 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,752 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,201 |
| World Map Quiz | 0 | - | 4.81 | 64,521 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,616 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,034 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,508 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,928 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,639 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,328 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,519 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,672 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,831 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,260 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,286 |
| Widest Countries East to West | 0 | - | 4.92 | 129,378 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,382 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,965 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,994 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,511 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,222 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,550 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,234 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,728 |
| Countries with Double Letters | 0 | - | 4.97 | 95,096 |
| Countries that End in N | 0 | - | 4.95 | 170,000 |
| Countries with Five Letters | 0 | - | 4.96 | 280,240 |
| Countries with Six Letters | 0 | - | 4.94 | 212,488 |
| Countries with W | 0 | - | 4.97 | 159,522 |
| Countries with Z | 0 | - | 4.98 | 289,809 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,753 |
| Countries That End in U | 0 | - | 4.95 | 120,414 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,756 |
| Countries that End in O | 0 | - | 4.92 | 159,198 |
| Countries that End in R | 0 | - | 4.87 | 118,735 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,515 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,337 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,109 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,084 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,668 |
| Countries That End in Y | 0 | - | 4.90 | 185,648 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,227 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,429 |
| Countries that End in I | 0 | - | 4.94 | 134,871 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,084 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,579 |
| Countries That End in NIA | 0 | - | 4.92 | 109,517 |
| Countries That End in BIA | 0 | - | 4.93 | 148,845 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,720 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,063 |
| Countries That End in RIA | 0 | - | 4.93 | 126,542 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,633 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,711 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,232 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,588 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,120 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,329 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,688 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,245 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,127 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,198 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,829 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,537 |
| Countries that End in L | 0 | - | 4.94 | 156,542 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,030 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,155 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,840 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,725 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,784 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,785 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,170 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,627 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,130 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,617 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,584 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,957 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,600 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,668 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,305 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,750 |
| One Border Countries | 0 | - | 4.98 | 467,694 |
| Top Producing Countries | 0 | - | 4.63 | 116,136 |
| ISO Country Codes | 0 | - | 4.45 | 82,352 |
| Countries on the Equator | 0 | - | 4.63 | 140,636 |
| Members of the Arab League | 0 | - | 4.77 | 75,576 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,778 |
| Separatist Movements | 0 | - | 4.44 | 45,816 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,050 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,752 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,150 |
| Westernmost Countries | 0 | - | 4.45 | 59,848 |
| Easternmost Countries | 0 | - | 4.75 | 62,823 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,592 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,411 |
| Indochina Countries | 0 | - | 4.74 | 66,100 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,585 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,248 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,950 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,054 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,326 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,598 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,790 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,860 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,278 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,603 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,468 |
| Flyover Countries | 0 | - | 4.68 | 50,729 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,735 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,457 |
