| Landlocked Countries | 0 | - | 4.99 | 420,023 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,424,892 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,482 |
| Himalayan Countries | 0 | - | 4.95 | 137,901 |
| Andean Countries | 0 | - | 4.95 | 84,164 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,377 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,955 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,033 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,483 |
| Danube Countries | 0 | - | 4.97 | 71,772 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,714 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,171 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,866 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,952 |
| European Landlocked Countries | 0 | - | 4.99 | 146,908 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,300 |
| Countries with the Most Species | 0 | - | 4.99 | 103,043 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,450 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,469 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,638 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,402 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,081 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,470 |
| Countries in the Alps | 0 | - | 4.87 | 117,888 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 97,438 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,609 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,508 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,395 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,243 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,804 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,407 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,288 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,044 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,657 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,547 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,390 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,019 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,311 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,320 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,445 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,141 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,646 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,714 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,947 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,531 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,069 |
| Largest Countries By Category | 0 | - | 4.97 | 157,846 |
| Countries by Countries | 0 | - | 4.97 | 62,959 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,387 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,191 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,498 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,453 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,764,557 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,938 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,923 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,965 |
| Island Countries | 0 | - | 4.99 | 710,211 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,347 |
| Northernmost Countries | 0 | - | 4.99 | 361,027 |
| Countries of South America | 0 | - | 5.00 | 924,476 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,331 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,870,434 |
| "Land" Countries | 0 | - | 4.98 | 336,086 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,355 |
| Countries with Megacities | 0 | - | 4.99 | 262,923 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,192 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,171 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,492 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,214 |
| Countries by Official Language | 0 | - | 4.95 | 194,857 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,827 |
| Countries in their Native Language | 0 | - | 4.99 | 198,395 |
| Independence from Whom | 0 | - | 4.99 | 211,612 |
| Subdivisions by Country | 0 | - | 4.86 | 50,341 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,911 |
| Megadiverse Countries | 0 | - | 4.96 | 134,848 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,730 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,235 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,815 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,051 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,854 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,454 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,145 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,911 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,545 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,030 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,267 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,777 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,063 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,844 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,228 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,396 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,378,463 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,532 |
| World Map Quiz | 0 | - | 4.81 | 64,797 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,186 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,154 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,714 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,054 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,775 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,660 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,657 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,794 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,932 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,335 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,399 |
| Widest Countries East to West | 0 | - | 4.92 | 129,463 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,410 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,111 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,042 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,605 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,364 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,663 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,291 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,752 |
| Countries with Double Letters | 0 | - | 4.97 | 95,314 |
| Countries that End in N | 0 | - | 4.95 | 170,340 |
| Countries with Five Letters | 0 | - | 4.96 | 281,163 |
| Countries with Six Letters | 0 | - | 4.94 | 212,758 |
| Countries with W | 0 | - | 4.97 | 159,677 |
| Countries with Z | 0 | - | 4.98 | 290,560 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,939 |
| Countries That End in U | 0 | - | 4.95 | 120,500 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,946 |
| Countries that End in O | 0 | - | 4.92 | 159,272 |
| Countries that End in R | 0 | - | 4.87 | 118,794 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,560 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,554 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,292 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,197 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,797 |
| Countries That End in Y | 0 | - | 4.91 | 185,701 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,474 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,567 |
| Countries that End in I | 0 | - | 4.94 | 134,931 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,677 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,648 |
| Countries That End in NIA | 0 | - | 4.92 | 109,600 |
| Countries That End in BIA | 0 | - | 4.93 | 148,958 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,859 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,180 |
| Countries That End in RIA | 0 | - | 4.93 | 126,616 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,750 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,008 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,377 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,763 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,302 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,398 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,769 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,351 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,259 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,265 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,954 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,679 |
| Countries that End in L | 0 | - | 4.94 | 156,629 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,614 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,181 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,901 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,805 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,858 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,010 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,343 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,764 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,275 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,776 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,671 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,004 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,635 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,745 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,069 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,174 |
| One Border Countries | 0 | - | 4.98 | 468,383 |
| Top Producing Countries | 0 | - | 4.63 | 116,178 |
| ISO Country Codes | 0 | - | 4.45 | 82,405 |
| Countries on the Equator | 0 | - | 4.63 | 140,709 |
| Members of the Arab League | 0 | - | 4.77 | 75,603 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,827 |
| Separatist Movements | 0 | - | 4.44 | 45,858 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,124 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,780 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,208 |
| Westernmost Countries | 0 | - | 4.42 | 62,058 |
| Easternmost Countries | 0 | - | 4.75 | 62,860 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,617 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,499 |
| Indochina Countries | 0 | - | 4.74 | 66,130 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,604 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,295 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,963 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,075 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,359 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,635 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,846 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,894 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,357 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,638 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,521 |
| Flyover Countries | 0 | - | 4.69 | 50,767 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,814 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,496 |
