| Landlocked Countries | 0 | - | 4.99 | 415,458 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,065,421 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,337 |
| Himalayan Countries | 0 | - | 4.95 | 136,008 |
| Andean Countries | 0 | - | 4.94 | 83,179 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,506 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,646 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,194 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,844 |
| Danube Countries | 0 | - | 4.97 | 71,274 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,010 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,719 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,887 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,834 |
| European Landlocked Countries | 0 | - | 4.99 | 145,977 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,544 |
| Countries with the Most Species | 0 | - | 4.99 | 95,352 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,663 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,272 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,444 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,074 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,720 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,087 |
| Countries in the Alps | 0 | - | 4.86 | 117,138 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,767 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,615 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,164 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,599 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,393 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,148 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,816 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,904 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,700 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,214 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,279 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,144 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,626 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,888 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,902 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,486 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,802 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,351 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,042 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,322 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,223 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,736 |
| Largest Countries By Category | 0 | - | 4.97 | 157,044 |
| Countries by Countries | 0 | - | 4.96 | 62,454 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,685 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,030 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,382 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,955 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,731,681 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,902 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,833 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,836 |
| Island Countries | 0 | - | 4.99 | 708,362 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,836 |
| Northernmost Countries | 0 | - | 4.99 | 358,752 |
| Countries of South America | 0 | - | 5.00 | 917,975 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,406 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,669 |
| "Land" Countries | 0 | - | 4.98 | 334,119 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,932 |
| Countries with Megacities | 0 | - | 4.99 | 248,248 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,833 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,374 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,218 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,309 |
| Countries by Official Language | 0 | - | 4.95 | 193,204 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,750 |
| Countries in their Native Language | 0 | - | 4.99 | 197,039 |
| Independence from Whom | 0 | - | 4.99 | 210,180 |
| Subdivisions by Country | 0 | - | 4.86 | 50,151 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,077 |
| Megadiverse Countries | 0 | - | 4.96 | 134,465 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,207 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,017 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,550 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,911 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,892 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,134 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,347 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,456 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,304 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,788 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,947 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,525 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,631 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,590 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,801 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,125 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,359 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,171 |
| World Map Quiz | 0 | - | 4.81 | 63,820 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,697 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,596 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,801 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,533 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,259 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,370 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,126 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,323 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,515 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,085 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,535 |
| Widest Countries East to West | 0 | - | 4.92 | 129,036 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,288 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,502 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,660 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,871 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,846 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,238 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,748 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,645 |
| Countries with Double Letters | 0 | - | 4.96 | 93,713 |
| Countries that End in N | 0 | - | 4.94 | 157,159 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,064 |
| Countries with Six Letters | 0 | - | 4.93 | 210,735 |
| Countries with W | 0 | - | 4.97 | 158,435 |
| Countries with Z | 0 | - | 4.98 | 288,276 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,778 |
| Countries That End in U | 0 | - | 4.95 | 119,623 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,898 |
| Countries that End in O | 0 | - | 4.92 | 158,668 |
| Countries that End in R | 0 | - | 4.87 | 118,385 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,940 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,441 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,575 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,665 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,215 |
| Countries That End in Y | 0 | - | 4.90 | 185,296 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,636 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,920 |
| Countries that End in I | 0 | - | 4.94 | 134,551 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,498 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,314 |
| Countries That End in NIA | 0 | - | 4.92 | 109,132 |
| Countries That End in BIA | 0 | - | 4.92 | 147,864 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,276 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,645 |
| Countries That End in RIA | 0 | - | 4.93 | 126,209 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,197 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,764 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,698 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,048 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,607 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,039 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,297 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,815 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,700 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,906 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,365 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,010 |
| Countries that End in L | 0 | - | 4.94 | 156,170 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,230 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,024 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,632 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,470 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,537 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,023 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,654 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,817 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,674 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,062 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,938 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,829 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,245 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,469 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,434 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,090 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,418 |
| One Border Countries | 0 | - | 4.98 | 465,786 |
| Top Producing Countries | 0 | - | 4.63 | 115,982 |
| ISO Country Codes | 0 | - | 4.45 | 82,221 |
| Countries on the Equator | 0 | - | 4.63 | 140,414 |
| Members of the Arab League | 0 | - | 4.77 | 75,509 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,642 |
| Separatist Movements | 0 | - | 4.44 | 45,710 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,741 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,675 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,016 |
| Westernmost Countries | 0 | - | 4.50 | 49,455 |
| Easternmost Countries | 0 | - | 4.75 | 62,715 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,520 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,044 |
| Indochina Countries | 0 | - | 4.74 | 65,990 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,548 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,844 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,901 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,985 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,241 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,482 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,652 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,770 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,075 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,472 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,321 |
| Flyover Countries | 0 | - | 4.68 | 50,619 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,516 |
