| Landlocked Countries | 0 | - | 4.99 | 414,691 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,006,148 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,038 |
| Himalayan Countries | 0 | - | 4.95 | 135,731 |
| Andean Countries | 0 | - | 4.94 | 83,040 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,388 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,464 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,085 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,748 |
| Danube Countries | 0 | - | 4.97 | 71,190 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,914 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,647 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,725 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,625 |
| European Landlocked Countries | 0 | - | 4.99 | 145,885 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,384 |
| Countries with the Most Species | 0 | - | 4.99 | 95,307 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,548 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,241 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,409 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,021 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,663 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,030 |
| Countries in the Alps | 0 | - | 4.86 | 117,003 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,688 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,469 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,114 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,516 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,306 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,096 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,708 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,847 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,611 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,159 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,236 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,106 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,553 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,835 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,836 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,315 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,743 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,314 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,957 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,891 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,033 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,686 |
| Largest Countries By Category | 0 | - | 4.97 | 156,923 |
| Countries by Countries | 0 | - | 4.96 | 62,378 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,560 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,002 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,361 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,869 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,725,496 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,266 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,512 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,388 |
| Island Countries | 0 | - | 4.99 | 708,039 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,913 |
| Northernmost Countries | 0 | - | 4.99 | 358,327 |
| Countries of South America | 0 | - | 5.00 | 916,696 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,743 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,065 |
| "Land" Countries | 0 | - | 4.98 | 333,931 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,722 |
| Countries with Megacities | 0 | - | 4.99 | 247,803 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,592 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,246 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,972 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,194 |
| Countries by Official Language | 0 | - | 4.95 | 192,997 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,450 |
| Countries in their Native Language | 0 | - | 4.99 | 196,856 |
| Independence from Whom | 0 | - | 4.99 | 209,974 |
| Subdivisions by Country | 0 | - | 4.86 | 50,116 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,943 |
| Megadiverse Countries | 0 | - | 4.97 | 133,988 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,020 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,971 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,484 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,889 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,794 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,076 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,230 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,263 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,268 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,770 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,773 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,472 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,570 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,559 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,753 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,083 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,258 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,916 |
| World Map Quiz | 0 | - | 4.81 | 63,690 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,279 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,458 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,630 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,407 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,140 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,120 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,038 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,228 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,425 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,028 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,468 |
| Widest Countries East to West | 0 | - | 4.92 | 128,962 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,261 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,371 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,618 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,793 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,735 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,165 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 74,680 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,628 |
| Countries with Double Letters | 0 | - | 4.97 | 93,591 |
| Countries that End in N | 0 | - | 4.94 | 157,070 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,910 |
| Countries with Six Letters | 0 | - | 4.93 | 210,582 |
| Countries with W | 0 | - | 4.97 | 158,361 |
| Countries with Z | 0 | - | 4.98 | 288,109 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,688 |
| Countries That End in U | 0 | - | 4.95 | 119,588 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,789 |
| Countries that End in O | 0 | - | 4.92 | 158,618 |
| Countries that End in R | 0 | - | 4.87 | 118,340 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,909 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,313 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,477 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,597 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,143 |
| Countries That End in Y | 0 | - | 4.90 | 185,261 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,538 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,830 |
| Countries that End in I | 0 | - | 4.94 | 134,507 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,374 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,265 |
| Countries That End in NIA | 0 | - | 4.92 | 109,081 |
| Countries That End in BIA | 0 | - | 4.92 | 147,807 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,190 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,590 |
| Countries That End in RIA | 0 | - | 4.93 | 126,159 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,124 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,563 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,623 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,983 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,485 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,988 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,222 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,745 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,627 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,861 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,259 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,929 |
| Countries that End in L | 0 | - | 4.94 | 156,117 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,805 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,012 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,590 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,391 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,488 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,763 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,516 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 140,921 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,574 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,927 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,856 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,782 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,225 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,449 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,387 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,905 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,092 |
| One Border Countries | 0 | - | 4.98 | 465,158 |
| Top Producing Countries | 0 | - | 4.63 | 115,957 |
| ISO Country Codes | 0 | - | 4.45 | 82,164 |
| Countries on the Equator | 0 | - | 4.63 | 140,372 |
| Members of the Arab League | 0 | - | 4.77 | 75,495 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,607 |
| Separatist Movements | 0 | - | 4.44 | 45,675 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,679 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,654 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,605 |
| Westernmost Countries | 0 | - | 4.50 | 49,442 |
| Easternmost Countries | 0 | - | 4.75 | 62,701 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,494 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,963 |
| Indochina Countries | 0 | - | 4.74 | 65,969 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,535 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,810 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,889 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,972 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,222 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,451 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,627 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,742 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,039 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,437 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,297 |
| Flyover Countries | 0 | - | 4.67 | 50,593 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,470 |
