| Landlocked Countries Quiz | 0 | - | 4.99 | 396,817 |
| Countries of the World Quiz | 0 | - | 5.00 | 45,446,390 |
| Sahara Desert Countries | 0 | - | 4.98 | 152,554 |
| Himalayan Countries | 0 | - | 4.95 | 128,281 |
| Andean Countries | 0 | - | 4.93 | 72,262 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 59,393 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 117,731 |
| Coffee Producing Countries | 0 | - | 4.84 | 62,769 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 61,854 |
| Danube Countries | 0 | - | 4.97 | 62,514 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 99,152 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 83,527 |
| Countries with the Worst Passports | 0 | - | 4.93 | 78,036 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 142,964 |
| European Landlocked Countries | 0 | - | 4.99 | 143,300 |
| Partially Recognized Countries | 0 | - | 4.98 | 101,333 |
| Countries with the Most Species | 0 | - | 4.99 | 93,722 |
| Countries 197 to 205 | 0 | - | 4.88 | 66,226 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 52,399 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 46,588 |
| Countries that Use the Peso | 0 | - | 4.89 | 57,621 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 71,133 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 55,205 |
| Countries in the Alps | 0 | - | 4.87 | 113,650 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 92,472 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 101,223 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 76,645 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 92,968 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 112,874 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 93,319 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 97,047 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 51,190 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 49,045 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 60,239 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 52,171 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 39,990 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 101,708 |
| Arctic Ocean Countries | 0 | - | 4.95 | 77,185 |
| Countries with the Most Grassland | 0 | - | 4.93 | 75,119 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 112,675 |
| Countries with the Most Climate Zones | 0 | - | 4.94 | 66,084 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 57,920 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.94 | 41,719 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 229,832 |
| World Countries - Blind Typing | 0 | - | 5.00 | 99,981 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 46,293 |
| Largest Countries By Category | 0 | - | 4.97 | 153,687 |
| Countries by Countries | 0 | - | 4.96 | 60,129 |
| Country Flags with the Most White | 0 | - | 4.86 | 134,374 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,233 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 85,621 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,490,109 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,579,614 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 365,393 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 390,343 |
| Island Countries Quiz | 0 | - | 4.99 | 699,213 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,014,748 |
| Northernmost Countries | 0 | - | 4.99 | 347,448 |
| Countries of South America | 0 | - | 5.00 | 886,027 |
| Countries of Oceania | 0 | - | 5.00 | 1,004,392 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,781,687 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 165,293 |
| Countries with Megacities | 0 | - | 4.99 | 225,312 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 191,595 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 108,815 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 130,573 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 76,332 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 308,682 |
| Countries by Official Language | 0 | - | 4.95 | 188,024 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 287,104 |
| Countries in their Native Language | 0 | - | 4.98 | 191,963 |
| Independence from Whom | 0 | - | 4.99 | 204,567 |
| Subdivisions by Country | 0 | - | 4.85 | 49,272 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 126,961 |
| Megadiverse Countries | 0 | - | 4.97 | 132,052 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 125,527 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 53,972 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 123,156 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,135 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.86 | 49,825 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 157,778 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 60,708 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 89,830 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 150,837 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 81,407 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,872 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 71,275 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 105,748 |
| Countries Furthest from the United States | 0 | - | 4.93 | 86,975 |
| Countries with the Highest HDI | 0 | - | 4.95 | 135,432 |
| Straight Shot to the Arctic Circle | 0 | - | 4.87 | 73,189 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 69,599 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,309,716 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 103,012 |
| World Map Quiz | 0 | - | 4.83 | 60,425 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 143,143 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 88,695 |
| Southernmost Countries of the World | 0 | - | 4.99 | 222,099 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 101,432 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 119,094 |
| Countries With the Most Languages | 0 | - | 4.89 | 194,085 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 106,806 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 90,886 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 96,106 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 59,615 |
| Tallest Countries North to South | 0 | - | 4.83 | 117,587 |
| Widest Countries East to West | 0 | - | 4.92 | 126,558 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,677 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 182,582 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 96,511 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 92,057 |
| Largest Countries as a Percent of Continent | 0 | - | 4.98 | 145,081 |
| Countries with the Most Desert | 0 | - | 4.93 | 125,074 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,542 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,067 |
| Countries with Double Letters | 0 | - | 4.97 | 87,853 |
| Countries that End in N | 0 | - | 4.93 | 151,278 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 252,353 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 205,343 |
| Countries with W | 0 | - | 4.97 | 153,878 |
| Countries with Z | 0 | - | 4.98 | 281,418 |
| Countries with Letters Missing | 0 | - | 4.97 | 180,478 |
| Countries That End in U | 0 | - | 4.95 | 116,989 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 104,634 |
| Countries that End in O | 0 | - | 4.92 | 156,411 |
| Countries that End in R | 0 | - | 4.83 | 101,292 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 153,195 |
| Countries Ending in "IA" | 0 | - | 4.99 | 202,231 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 166,358 |
| Countries by Last Two Letters | 0 | - | 4.88 | 132,378 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 138,329 |
| Countries That End in Y | 0 | - | 4.91 | 183,705 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 193,125 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.93 | 148,923 |
| Countries that End in I | 0 | - | 4.92 | 118,512 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 178,917 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 93,769 |
| Countries That End in NIA | 0 | - | 4.92 | 107,322 |
| Countries That End in BIA | 0 | - | 4.92 | 145,516 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 163,323 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 116,510 |
| Countries That End in RIA | 0 | - | 4.92 | 124,285 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 107,851 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 219,994 |
| Divided Country Name Puzzle #2 | 0 | - | 4.98 | 129,684 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 121,799 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 87,544 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 72,548 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 50,274 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 100,369 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 122,053 |
| Countries that are Free from U.S.A. | 0 | - | 4.88 | 47,518 |
| Countries with the Word "And" | 0 | - | 4.98 | 92,016 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 50,187 |
| Countries that End in L | 0 | - | 4.94 | 153,675 |
| "Land" Countries | 0 | - | 4.98 | 303,038 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 200,564 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,422 |
| City to Country Quiz #1 | 0 | - | 4.96 | 153,005 |
| City to Country Quiz #3 | 0 | - | 4.88 | 106,942 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 76,932 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 223,326 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 195,386 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 123,816 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 159,160 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 219,364 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 149,184 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 69,630 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 106,705 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.94 | 85,485 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 60,777 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,403,105 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 369,336 |
| One Border Countries | 0 | - | 4.97 | 451,253 |
| Top Producing Countries | 0 | - | 4.63 | 114,994 |
| Country Codes Quiz | 0 | - | 4.45 | 81,349 |
| Countries on the Equator | 0 | - | 4.69 | 138,859 |
| Members of the Arab League | 0 | - | 4.78 | 75,060 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 68,777 |
| Separatist Movements | 0 | - | 4.44 | 45,041 |
| Countries with the Best Passports | 0 | - | 4.75 | 82,971 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,191 |
| Next Country Alphabetically | 0 | - | 4.70 | 84,513 |
| Westernmost Countries | 0 | - | 4.50 | 49,064 |
| Easternmost Countries | 0 | - | 4.74 | 62,153 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 38,987 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 106,117 |
| Indochina Countries | 0 | - | 4.70 | 65,245 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,241 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 94,990 |
| Highest Foreign Aid Recipients | 0 | - | 4.64 | 43,620 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,595 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,691 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 52,689 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 59,723 |
| Countries 206 to 242 | 0 | - | 4.70 | 33,164 |
| Most Populous Countries By Category | 0 | - | 4.56 | 83,775 |
| Countries with the Most Turkic People | 0 | - | 4.74 | 44,708 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 60,438 |
| Flyover Countries | 0 | - | 4.64 | 49,881 |
