| Landlocked Countries Quiz | 0 | - | 4.99 | 382,546 |
| Countries of the World Quiz | 0 | - | 5.00 | 44,318,250 |
| Sahara Desert Countries | 0 | - | 4.97 | 145,458 |
| Himalayan Countries | 0 | - | 4.95 | 122,125 |
| Andean Countries | 0 | - | 4.92 | 68,624 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 56,615 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 112,991 |
| Coffee Producing Countries | 0 | - | 4.83 | 59,847 |
| Countries with Shrinking Populations | 0 | - | 4.92 | 59,242 |
| Danube Countries | 0 | - | 4.97 | 60,808 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 96,819 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 81,857 |
| Countries with the Best Passports | 0 | - | 4.81 | 80,441 |
| Countries with the Worst Passports | 0 | - | 4.92 | 64,730 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 138,124 |
| European Landlocked Countries | 0 | - | 4.99 | 140,984 |
| Partially Recognized Countries | 0 | - | 4.98 | 98,034 |
| Countries with the Most Species | 0 | - | 4.99 | 92,316 |
| Countries 197 to 205 | 0 | - | 4.87 | 63,430 |
| Tropic of Cancer Countries | 0 | - | 4.95 | 46,678 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,775 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 52,559 |
| Countries that Use the Peso | 0 | - | 4.88 | 56,327 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,931 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 53,621 |
| Countries in the Alps | 0 | - | 4.86 | 110,408 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 90,687 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 97,758 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 75,368 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 83,709 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 110,608 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,928 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,978 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,822 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,947 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,763 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 72,712 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 51,242 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 39,086 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 100,143 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,823 |
| Countries with the Most Grassland | 0 | - | 4.93 | 73,495 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 108,947 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,784 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,709 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 221,984 |
| World Countries - Blind Typing | 0 | - | 5.00 | 95,049 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 45,080 |
| Largest Countries By Category | 0 | - | 4.97 | 151,335 |
| Countries by Countries | 0 | - | 4.96 | 58,445 |
| Country Flags with the Most White | 0 | - | 4.87 | 132,063 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,656 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 83,924 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,405,960 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,474,599 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 360,176 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 382,319 |
| Island Countries Quiz | 0 | - | 4.99 | 690,782 |
| Biggest Countries by Area | 0 | - | 5.00 | 989,768 |
| Northernmost Countries | 0 | - | 4.99 | 342,729 |
| Countries of South America | 0 | - | 5.00 | 862,978 |
| Countries of Oceania | 0 | - | 5.00 | 975,707 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,731,008 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 158,919 |
| Countries with Megacities | 0 | - | 4.99 | 218,144 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 186,776 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 106,268 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 126,704 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 73,264 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 269,982 |
| Countries by Official Language | 0 | - | 4.95 | 184,126 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 282,131 |
| Countries in their Native Language | 0 | - | 4.98 | 188,908 |
| Independence from Whom | 0 | - | 4.99 | 199,904 |
| Subdivisions by Country | 0 | - | 4.86 | 48,530 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 123,776 |
| Megadiverse Countries | 0 | - | 4.96 | 130,510 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 122,193 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 121,803 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 49,333 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 155,484 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 59,493 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 86,842 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 149,247 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 80,445 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,423 |
| Countries by Sports League Revenue | 0 | - | 4.93 | 67,520 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,876 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,983 |
| Countries with the Highest HDI | 0 | - | 4.95 | 134,224 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 72,179 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,644 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,257,817 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 98,233 |
| World Map Quiz | 0 | - | 4.88 | 57,713 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 135,151 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 86,767 |
| Southernmost Countries of the World | 0 | - | 4.99 | 218,664 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 98,794 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 116,626 |
| Countries With the Most Languages | 0 | - | 4.89 | 189,352 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 92,561 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 88,628 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 93,630 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 58,389 |
| Tallest Countries North to South | 0 | - | 4.85 | 115,649 |
| Widest Countries East to West | 0 | - | 4.92 | 124,792 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,204 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 179,991 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,470 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 90,312 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 125,471 |
| Countries with the Most Desert | 0 | - | 4.93 | 123,383 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,040 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,564 |
| Countries with Double Letters | 0 | - | 4.96 | 82,396 |
| Countries that End in N | 0 | - | 4.93 | 146,306 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 246,281 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 200,702 |
| Countries with W | 0 | - | 4.97 | 149,462 |
| Countries with Z | 0 | - | 4.98 | 276,215 |
| Countries with Letters Missing | 0 | - | 4.97 | 176,631 |
| Countries That End in U | 0 | - | 4.95 | 114,430 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 100,708 |
| Countries that End in O | 0 | - | 4.91 | 154,516 |
| Countries that End in R | 0 | - | 4.84 | 100,012 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,994 |
| Countries Ending in "IA" | 0 | - | 4.99 | 198,281 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 163,446 |
| Countries by Last Two Letters | 0 | - | 4.87 | 121,924 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 135,689 |
| Countries That End in Y | 0 | - | 4.91 | 182,187 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 189,376 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 127,613 |
| Countries that End in I | 0 | - | 4.92 | 117,502 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 158,515 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 92,268 |
| Countries That End in NIA | 0 | - | 4.92 | 105,188 |
| Countries That End in BIA | 0 | - | 4.92 | 142,835 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 161,356 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,855 |
| Countries That End in RIA | 0 | - | 4.89 | 105,547 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 105,995 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 215,501 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 127,374 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 119,221 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 85,059 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 71,265 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 48,685 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 98,194 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 120,090 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 46,324 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 47,867 |
| Countries that End in L | 0 | - | 4.94 | 151,880 |
| "Land" Countries | 0 | - | 4.98 | 299,782 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 197,690 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,959 |
| City to Country Quiz #1 | 0 | - | 4.96 | 150,632 |
| City to Country Quiz #3 | 0 | - | 4.87 | 104,789 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 75,661 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 219,334 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 192,486 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 122,135 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 140,926 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 216,034 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.97 | 147,239 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,751 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.82 | 106,004 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,883 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,824 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,381,765 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 364,862 |
| One Border Countries | 0 | - | 4.98 | 445,174 |
| Top-Producing Countries | 0 | - | 4.69 | 102,613 |
| Country Codes Quiz | 0 | - | 4.45 | 80,673 |
| Countries on the Equator | 0 | - | 4.74 | 137,527 |
| Members of the Arab League | 0 | - | 4.78 | 74,691 |
| Countries with the Oldest Median Age | 0 | - | 4.79 | 68,085 |
| Separatist Movements | 0 | - | 4.46 | 44,515 |
| Prime Meridian Countries | 0 | - | 4.69 | 58,842 |
| Next Country Alphabetically | 0 | - | 4.71 | 83,683 |
| Westernmost Countries | 0 | - | 4.49 | 48,769 |
| Easternmost Countries | 0 | - | 4.70 | 61,786 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 38,595 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 104,360 |
| Indochina Countries | 0 | - | 4.70 | 64,705 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,037 |
| Countries With the Most Conflict Deaths | 0 | - | 4.65 | 94,201 |
| Highest Foreign Aid Recipients | 0 | - | 4.64 | 43,387 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,325 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 47,312 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 52,036 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 59,041 |
| Countries 206 to 242 | 0 | - | 4.73 | 32,615 |
| Most Populous Countries By Category | 0 | - | 4.54 | 64,004 |
| Countries with the Most Turkic People | 0 | - | 4.74 | 44,143 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.75 | 59,753 |
| Flyover Countries | 0 | - | 4.64 | 49,356 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 70,766 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 38,945 |
