| Landlocked Countries | 0 | - | 4.99 | 413,274 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,890,196 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,426 |
| Himalayan Countries | 0 | - | 4.95 | 135,209 |
| Andean Countries | 0 | - | 4.94 | 82,756 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,166 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,106 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,831 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,543 |
| Danube Countries | 0 | - | 4.97 | 71,044 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,707 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,498 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,392 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,317 |
| European Landlocked Countries | 0 | - | 4.99 | 145,714 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,140 |
| Countries with the Most Species | 0 | - | 4.99 | 95,222 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,285 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,191 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,356 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,938 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,548 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,918 |
| Countries in the Alps | 0 | - | 4.87 | 116,764 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,524 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,181 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,982 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,387 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,111 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,966 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,527 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,725 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,057 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,018 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,182 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,021 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,414 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,712 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,719 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,991 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,608 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,235 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,731 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,071 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,524 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,574 |
| Largest Countries By Category | 0 | - | 4.97 | 156,691 |
| Countries by Countries | 0 | - | 4.96 | 62,223 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,321 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,951 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,315 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,721 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,713,486 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,454 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,003 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,546 |
| Island Countries | 0 | - | 4.99 | 707,466 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,010 |
| Northernmost Countries | 0 | - | 4.99 | 357,531 |
| Countries of South America | 0 | - | 5.00 | 914,103 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,649 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,984 |
| "Land" Countries | 0 | - | 4.98 | 333,545 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,988 |
| Countries with Megacities | 0 | - | 4.99 | 246,500 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,908 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,791 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,363 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,752 |
| Countries by Official Language | 0 | - | 4.95 | 192,697 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,021 |
| Countries in their Native Language | 0 | - | 4.99 | 196,555 |
| Independence from Whom | 0 | - | 4.99 | 209,590 |
| Subdivisions by Country | 0 | - | 4.86 | 50,049 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,675 |
| Megadiverse Countries | 0 | - | 4.97 | 133,864 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,731 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,903 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,404 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,600 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,970 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,829 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,115 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,200 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,731 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,494 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,395 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,470 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,484 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,645 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,003 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,336 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,470 |
| World Map Quiz | 0 | - | 4.81 | 63,444 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,473 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,284 |
| Countries by Founding Story | 0 | - | 4.95 | 76,489 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,269 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,936 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,902 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,630 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,821 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,026 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,234 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,920 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,301 |
| Widest Countries East to West | 0 | - | 4.92 | 128,569 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,209 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,162 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,546 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,666 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,587 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,002 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,045 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,565 |
| Countries with Double Letters | 0 | - | 4.97 | 93,305 |
| Countries that End in N | 0 | - | 4.94 | 156,366 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,596 |
| Countries with Six Letters | 0 | - | 4.93 | 210,281 |
| Countries with W | 0 | - | 4.97 | 158,175 |
| Countries with Z | 0 | - | 4.98 | 287,781 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,496 |
| Countries That End in U | 0 | - | 4.95 | 119,488 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,467 |
| Countries that End in O | 0 | - | 4.92 | 158,520 |
| Countries that End in R | 0 | - | 4.87 | 118,245 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,842 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,946 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,267 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,451 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,906 |
| Countries That End in Y | 0 | - | 4.90 | 185,181 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,295 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,618 |
| Countries that End in I | 0 | - | 4.94 | 134,373 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,119 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,175 |
| Countries That End in NIA | 0 | - | 4.92 | 108,968 |
| Countries That End in BIA | 0 | - | 4.92 | 147,670 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,023 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,445 |
| Countries That End in RIA | 0 | - | 4.93 | 126,052 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,969 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,113 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,485 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,861 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,318 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,908 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,083 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,609 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,460 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,800 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,084 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,766 |
| Countries that End in L | 0 | - | 4.94 | 155,688 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,975 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,975 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,493 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,265 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,404 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,670 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,032 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,886 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,131 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,322 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,481 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,593 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,158 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,407 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,289 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,414 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,451 |
| One Border Countries | 0 | - | 4.98 | 464,092 |
| Top Producing Countries | 0 | - | 4.63 | 115,893 |
| ISO Country Codes | 0 | - | 4.45 | 82,109 |
| Countries on the Equator | 0 | - | 4.63 | 140,277 |
| Members of the Arab League | 0 | - | 4.77 | 75,456 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,550 |
| Separatist Movements | 0 | - | 4.44 | 45,621 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,559 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,629 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,540 |
| Westernmost Countries | 0 | - | 4.50 | 49,416 |
| Easternmost Countries | 0 | - | 4.75 | 62,675 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,453 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,832 |
| Indochina Countries | 0 | - | 4.74 | 65,908 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,517 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,753 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,871 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,951 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,174 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,396 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,566 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,711 |
| Most Populous Countries By Category | 0 | - | 4.55 | 84,961 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,389 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,231 |
| Flyover Countries | 0 | - | 4.64 | 50,542 |
