| Landlocked Countries Quiz | 0 | - | 4.99 | 335,125 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,821,989 |
| Members of the Arab League | 0 | - | 4.86 | 66,564 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,719 |
| Himalayan Countries | 0 | - | 4.94 | 108,659 |
| Andean Countries | 0 | - | 4.91 | 60,356 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,532 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,953 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,583 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,907 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,347 |
| Danube Countries | 0 | - | 4.96 | 57,272 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,274 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,336 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,824 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,503 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,153 |
| European Landlocked Countries | 0 | - | 4.99 | 137,282 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,906 |
| Countries with the Most Species | 0 | - | 4.99 | 90,083 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,447 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,059 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,347 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,136 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,928 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,163 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,996 |
| Countries in the Alps | 0 | - | 4.84 | 103,973 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,540 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,745 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,356 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,463 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,985 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,417 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,635 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,828 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,741 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,476 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,242 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,072 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,059 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,651 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,744 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,312 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,781 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 62,015 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,114 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 203,149 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,648 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,885 |
| Largest Countries By Category | 0 | - | 4.97 | 146,558 |
| Countries by Countries | 0 | - | 4.95 | 55,695 |
| Country Flags with the Most White | 0 | - | 4.90 | 126,666 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,258 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,745 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,179,717 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,234,178 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,439 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 363,164 |
| Island Countries Quiz | 0 | - | 4.99 | 669,260 |
| Biggest Countries by Area | 0 | - | 5.00 | 948,632 |
| Northernmost Countries | 0 | - | 4.99 | 331,155 |
| Countries of South America | 0 | - | 5.00 | 811,228 |
| Countries of Oceania | 0 | - | 5.00 | 915,103 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,614,242 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,254 |
| Countries with Megacities | 0 | - | 4.99 | 202,132 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,621 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,088 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,426 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,024 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,423 |
| Countries by Official Language | 0 | - | 4.96 | 175,407 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,776 |
| Countries in their Native Language | 0 | - | 4.98 | 180,778 |
| Independence from Whom | 0 | - | 4.99 | 189,608 |
| Subdivisions by Country | 0 | - | 4.85 | 46,934 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,802 |
| Megadiverse Countries | 0 | - | 4.96 | 126,879 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 94,086 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,654 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,854 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,451 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,949 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,772 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,095 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,766 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,878 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,174 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,320 |
| Countries Furthest from the United States | 0 | - | 4.94 | 73,004 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,548 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,450 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,076 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,847 |
| World Map Quiz | 0 | - | 4.90 | 51,613 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 118,897 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,816 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,936 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,925 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 110,299 |
| Countries With the Most Languages | 0 | - | 4.90 | 178,010 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,753 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,172 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 88,392 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 55,170 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,665 |
| Widest Countries East to West | 0 | - | 4.93 | 120,634 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,139 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,668 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,886 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,465 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,927 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,737 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,566 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,820 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,440 |
| Countries with Double Letters | 0 | - | 4.96 | 72,244 |
| Countries that End in N | 0 | - | 4.94 | 136,529 |
| Countries with Five Letters Quiz | 0 | - | 4.97 | 234,299 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 190,936 |
| Countries with W | 0 | - | 4.96 | 126,041 |
| Countries with Z | 0 | - | 4.98 | 265,069 |
| Countries with Letters Missing | 0 | - | 4.97 | 169,921 |
| Countries That End in U | 0 | - | 4.95 | 109,644 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,673 |
| Countries that End in O | 0 | - | 4.92 | 148,836 |
| Countries that End in R | 0 | - | 4.85 | 97,430 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,390 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,422 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,847 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,799 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,743 |
| Countries That End in Y | 0 | - | 4.92 | 176,411 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,132 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,486 |
| Countries that End in I | 0 | - | 4.92 | 115,278 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,760 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,458 |
| Countries That End in NIA | 0 | - | 4.92 | 101,896 |
| Countries That End in BIA | 0 | - | 4.91 | 127,409 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,281 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 111,065 |
| Countries That End in RIA | 0 | - | 4.90 | 101,971 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 101,863 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 204,820 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,732 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,900 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,449 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,987 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,922 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,266 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,758 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,608 |
| Countries that End in L | 0 | - | 4.95 | 135,959 |
| "Land" Countries | 0 | - | 4.98 | 292,495 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,388 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,927 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,436 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,123 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,693 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,268 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,152 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,916 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 135,022 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,569 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,653 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,656 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,384 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,325 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,440 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,330,106 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,651 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,120,873 |
| One Border Countries | 0 | - | 4.98 | 416,115 |
| Top-Producing Countries | 0 | - | 4.71 | 100,823 |
| Country Codes Quiz | 0 | - | 4.45 | 78,347 |
| Countries on the Equator | 0 | - | 4.78 | 135,244 |
| Separatist Movements | 0 | - | 4.45 | 43,180 |
| Prime Meridian Countries | 0 | - | 4.64 | 52,183 |
| Next Country Alphabetically | 0 | - | 4.75 | 80,964 |
| Westernmost Countries | 0 | - | 4.50 | 47,918 |
| Easternmost Countries | 0 | - | 4.76 | 60,824 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 37,541 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 100,429 |
| Indochina Countries | 0 | - | 4.72 | 63,361 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,387 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 92,167 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,728 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,505 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.75 | 46,349 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,342 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 57,164 |
| Most Populous Countries By Category | 0 | - | 4.57 | 62,156 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,644 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,768 |
| Flyover Countries | 0 | - | 4.65 | 47,952 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,840 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,939 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 43,183 |
