| Landlocked Countries | 0 | - | 4.99 | 416,869 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,179,239 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,028 |
| Himalayan Countries | 0 | - | 4.95 | 136,584 |
| Andean Countries | 0 | - | 4.95 | 83,533 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,788 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,064 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,461 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,053 |
| Danube Countries | 0 | - | 4.97 | 71,452 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,259 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,865 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,195 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,178 |
| European Landlocked Countries | 0 | - | 4.99 | 146,147 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,807 |
| Countries with the Most Species | 0 | - | 4.99 | 101,999 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,934 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,342 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,519 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,177 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,826 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,206 |
| Countries in the Alps | 0 | - | 4.86 | 117,363 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,923 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,941 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,270 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,763 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,851 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,275 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,008 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,004 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,824 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,355 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,373 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,214 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,743 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,018 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,022 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,760 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,911 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,442 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,268 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,111 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,626 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,841 |
| Largest Countries By Category | 0 | - | 4.97 | 157,296 |
| Countries by Countries | 0 | - | 4.96 | 62,612 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,902 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,086 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,411 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,106 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,742,056 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,074 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,896 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,923 |
| Island Countries | 0 | - | 4.99 | 708,893 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,574 |
| Northernmost Countries | 0 | - | 4.99 | 359,468 |
| Countries of South America | 0 | - | 5.00 | 919,944 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,255 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,419 |
| "Land" Countries | 0 | - | 4.98 | 334,686 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,359 |
| Countries with Megacities | 0 | - | 4.99 | 249,110 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,216 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,586 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,544 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,553 |
| Countries by Official Language | 0 | - | 4.95 | 194,054 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,755 |
| Countries in their Native Language | 0 | - | 4.99 | 197,669 |
| Independence from Whom | 0 | - | 4.99 | 210,859 |
| Subdivisions by Country | 0 | - | 4.86 | 50,209 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,374 |
| Megadiverse Countries | 0 | - | 4.96 | 134,558 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,872 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,085 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,640 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,953 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,462 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,237 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,628 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,561 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,383 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,809 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,288 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,588 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,694 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,656 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,870 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,218 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,004 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,622 |
| World Map Quiz | 0 | - | 4.81 | 64,127 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,492 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,720 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,090 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,687 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,417 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,748 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,292 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,482 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,647 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,157 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,653 |
| Widest Countries East to West | 0 | - | 4.92 | 129,154 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,333 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,681 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,931 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,967 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,992 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,375 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,121 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,680 |
| Countries with Double Letters | 0 | - | 4.96 | 94,194 |
| Countries that End in N | 0 | - | 4.95 | 166,949 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,648 |
| Countries with Six Letters | 0 | - | 4.93 | 211,188 |
| Countries with W | 0 | - | 4.97 | 158,868 |
| Countries with Z | 0 | - | 4.98 | 288,845 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,079 |
| Countries That End in U | 0 | - | 4.95 | 119,959 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,200 |
| Countries that End in O | 0 | - | 4.92 | 158,888 |
| Countries that End in R | 0 | - | 4.87 | 118,522 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,298 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,806 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,770 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,831 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,404 |
| Countries That End in Y | 0 | - | 4.90 | 185,449 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,871 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,111 |
| Countries that End in I | 0 | - | 4.94 | 134,682 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,720 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,421 |
| Countries That End in NIA | 0 | - | 4.92 | 109,306 |
| Countries That End in BIA | 0 | - | 4.93 | 148,589 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,443 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,787 |
| Countries That End in RIA | 0 | - | 4.93 | 126,356 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,355 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,125 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,884 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,216 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,812 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,157 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,460 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,966 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,862 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,018 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,539 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,228 |
| Countries that End in L | 0 | - | 4.94 | 156,307 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,974 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,072 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,717 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,578 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,629 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,360 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,824 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,358 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,845 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,280 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,056 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,877 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,299 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,529 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,528 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,222 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,915 |
| One Border Countries | 0 | - | 4.98 | 466,516 |
| Top Producing Countries | 0 | - | 4.63 | 116,046 |
| ISO Country Codes | 0 | - | 4.45 | 82,279 |
| Countries on the Equator | 0 | - | 4.63 | 140,504 |
| Members of the Arab League | 0 | - | 4.77 | 75,535 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,702 |
| Separatist Movements | 0 | - | 4.44 | 45,747 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,839 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,700 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,068 |
| Westernmost Countries | 0 | - | 4.50 | 49,474 |
| Easternmost Countries | 0 | - | 4.75 | 62,744 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,550 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,185 |
| Indochina Countries | 0 | - | 4.74 | 66,038 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,561 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,159 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,921 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,018 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,283 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,534 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,701 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,813 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,169 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,524 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,381 |
| Flyover Countries | 0 | - | 4.68 | 50,664 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,601 |
