| Landlocked Countries | 0 | - | 4.99 | 421,612 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,554,419 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,261 |
| Himalayan Countries | 0 | - | 4.95 | 138,556 |
| Andean Countries | 0 | - | 4.93 | 84,513 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,700 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,694 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,331 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,730 |
| Danube Countries | 0 | - | 4.97 | 71,959 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,961 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,381 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,221 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,698 |
| European Landlocked Countries | 0 | - | 4.99 | 147,087 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,563 |
| Countries with the Most Species | 0 | - | 4.99 | 103,196 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,695 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,560 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,702 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,512 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,193 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,615 |
| Countries in the Alps | 0 | - | 4.87 | 118,147 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,857 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,974 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,618 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,564 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,451 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,918 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,628 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,456 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,155 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,809 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,631 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,493 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,183 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,433 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,484 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,806 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,277 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,148 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,000 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,745 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,992 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,190 |
| Largest Countries By Category | 0 | - | 4.97 | 158,145 |
| Countries by Countries | 0 | - | 4.96 | 63,154 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,635 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,269 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,554 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,640 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,776,032 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,284 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,407 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,972 |
| Island Countries | 0 | - | 4.99 | 710,909 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,399 |
| Northernmost Countries | 0 | - | 4.99 | 361,789 |
| Countries of South America | 0 | - | 5.00 | 926,773 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,205 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,140 |
| "Land" Countries | 0 | - | 4.98 | 337,227 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,790 |
| Countries with Megacities | 0 | - | 4.99 | 264,344 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,650 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,415 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,915 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,484 |
| Countries by Official Language | 0 | - | 4.95 | 195,184 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,269 |
| Countries in their Native Language | 0 | - | 4.99 | 198,977 |
| Independence from Whom | 0 | - | 4.99 | 211,997 |
| Subdivisions by Country | 0 | - | 4.86 | 50,415 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,665 |
| Megadiverse Countries | 0 | - | 4.96 | 134,981 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,015 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,331 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,212 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,091 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,069 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,575 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,411 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,004 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,626 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,126 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,612 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,851 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,180 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,944 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,334 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,473 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,770 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,075 |
| World Map Quiz | 0 | - | 4.81 | 65,035 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,086 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,315 |
| Countries by Founding Story | 0 | - | 4.95 | 77,336 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,010 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,237 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,956 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,105 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,845 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,980 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,265 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,417 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,546 |
| Widest Countries East to West | 0 | - | 4.92 | 129,610 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,440 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,337 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,106 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,743 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,552 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,826 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,361 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,792 |
| Countries with Double Letters | 0 | - | 4.96 | 96,139 |
| Countries that End in N | 0 | - | 4.95 | 171,028 |
| Countries with Five Letters | 0 | - | 4.96 | 282,249 |
| Countries with Six Letters | 0 | - | 4.94 | 213,450 |
| Countries with W | 0 | - | 4.97 | 160,258 |
| Countries with Z | 0 | - | 4.98 | 291,336 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,619 |
| Countries That End in U | 0 | - | 4.95 | 120,812 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,378 |
| Countries that End in O | 0 | - | 4.92 | 159,485 |
| Countries that End in R | 0 | - | 4.87 | 118,946 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,702 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,996 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,635 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,430 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,350 |
| Countries That End in Y | 0 | - | 4.91 | 185,852 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,838 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,807 |
| Countries that End in I | 0 | - | 4.94 | 135,062 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,018 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,791 |
| Countries That End in NIA | 0 | - | 4.92 | 109,745 |
| Countries That End in BIA | 0 | - | 4.93 | 149,155 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,058 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,386 |
| Countries That End in RIA | 0 | - | 4.93 | 126,777 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,976 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,495 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,643 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,043 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,606 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,551 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,985 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,431 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,486 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,393 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,238 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,935 |
| Countries that End in L | 0 | - | 4.94 | 156,793 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,537 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,250 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,995 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,917 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,966 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,674 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,601 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,941 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,494 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,376 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,829 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,078 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,693 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,847 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,596 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,834 |
| One Border Countries | 0 | - | 4.98 | 469,669 |
| Top Producing Countries | 0 | - | 4.63 | 116,253 |
| ISO Country Codes | 0 | - | 4.48 | 91,160 |
| Countries on the Equator | 0 | - | 4.63 | 140,812 |
| Members of the Arab League | 0 | - | 4.77 | 75,634 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,905 |
| Separatist Movements | 0 | - | 4.45 | 45,899 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,243 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,826 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,269 |
| Westernmost Countries | 0 | - | 4.43 | 62,399 |
| Easternmost Countries | 0 | - | 4.75 | 62,962 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,657 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,635 |
| Indochina Countries | 0 | - | 4.74 | 66,189 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,631 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,358 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,981 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,096 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,393 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,696 |
| Countries that are the Source of Refugees | 0 | - | 4.72 | 64,092 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,955 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,448 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,712 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,590 |
| Flyover Countries | 0 | - | 4.69 | 50,815 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,960 |
