| Landlocked Countries | 0 | - | 4.99 | 418,844 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,327,754 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,963 |
| Himalayan Countries | 0 | - | 4.94 | 137,386 |
| Andean Countries | 0 | - | 4.95 | 83,914 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,212 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,625 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,820 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,340 |
| Danube Countries | 0 | - | 4.97 | 71,648 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,534 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,046 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,628 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,710 |
| European Landlocked Countries | 0 | - | 4.99 | 146,765 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,120 |
| Countries with the Most Species | 0 | - | 4.99 | 102,899 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,254 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,429 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,584 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,294 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,978 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,356 |
| Countries in the Alps | 0 | - | 4.87 | 117,678 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,121 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,352 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,404 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,972 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,082 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,474 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,271 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,177 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,962 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,546 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,472 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,334 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,916 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,179 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,201 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,156 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,056 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,565 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,506 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,318 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,202 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,991 |
| Largest Countries By Category | 0 | - | 4.97 | 157,620 |
| Countries by Countries | 0 | - | 4.96 | 62,829 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,195 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,157 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,466 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,314 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,756,231 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,889 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,572 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,048 |
| Island Countries | 0 | - | 4.99 | 709,708 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,947 |
| Northernmost Countries | 0 | - | 4.99 | 360,417 |
| Countries of South America | 0 | - | 5.00 | 922,779 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,855 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,055 |
| "Land" Countries | 0 | - | 4.98 | 335,775 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,994 |
| Countries with Megacities | 0 | - | 4.99 | 259,233 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,861 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,976 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,150 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,978 |
| Countries by Official Language | 0 | - | 4.95 | 194,625 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,504 |
| Countries in their Native Language | 0 | - | 4.99 | 198,166 |
| Independence from Whom | 0 | - | 4.99 | 211,282 |
| Subdivisions by Country | 0 | - | 4.86 | 50,284 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,686 |
| Megadiverse Countries | 0 | - | 4.96 | 134,756 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,532 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,180 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,747 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,014 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,699 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,377 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,963 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,838 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,476 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,986 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,932 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,708 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,988 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,769 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,145 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,319 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,506 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,161 |
| World Map Quiz | 0 | - | 4.81 | 64,502 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,555 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,024 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,482 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,919 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,630 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,308 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,512 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,666 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,820 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,255 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,275 |
| Widest Countries East to West | 0 | - | 4.92 | 129,362 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,380 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,950 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,988 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,504 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,210 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,536 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,228 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,724 |
| Countries with Double Letters | 0 | - | 4.97 | 95,072 |
| Countries that End in N | 0 | - | 4.95 | 169,966 |
| Countries with Five Letters | 0 | - | 4.96 | 280,099 |
| Countries with Six Letters | 0 | - | 4.94 | 212,456 |
| Countries with W | 0 | - | 4.97 | 159,512 |
| Countries with Z | 0 | - | 4.98 | 289,780 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,724 |
| Countries That End in U | 0 | - | 4.95 | 120,405 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,736 |
| Countries that End in O | 0 | - | 4.92 | 159,190 |
| Countries that End in R | 0 | - | 4.87 | 118,727 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,506 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,313 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,094 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,072 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,657 |
| Countries That End in Y | 0 | - | 4.90 | 185,645 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,218 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,410 |
| Countries that End in I | 0 | - | 4.94 | 134,859 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,061 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,571 |
| Countries That End in NIA | 0 | - | 4.92 | 109,510 |
| Countries That End in BIA | 0 | - | 4.93 | 148,836 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,700 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,049 |
| Countries That End in RIA | 0 | - | 4.93 | 126,528 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,612 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,662 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,212 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,566 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,100 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,316 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,679 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,229 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,112 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,188 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,813 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,527 |
| Countries that End in L | 0 | - | 4.94 | 156,536 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,963 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,152 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,830 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,717 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,773 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,762 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,156 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,609 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,116 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,602 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,578 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,949 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,595 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,656 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,138 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,698 |
| One Border Countries | 0 | - | 4.98 | 467,630 |
| Top Producing Countries | 0 | - | 4.63 | 116,129 |
| ISO Country Codes | 0 | - | 4.45 | 82,350 |
| Countries on the Equator | 0 | - | 4.63 | 140,626 |
| Members of the Arab League | 0 | - | 4.77 | 75,574 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,773 |
| Separatist Movements | 0 | - | 4.44 | 45,815 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,036 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,748 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,144 |
| Westernmost Countries | 0 | - | 4.45 | 58,967 |
| Easternmost Countries | 0 | - | 4.75 | 62,817 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,591 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,400 |
| Indochina Countries | 0 | - | 4.74 | 66,097 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,583 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,243 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,950 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,054 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,323 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,595 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,787 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,858 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,273 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,597 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,460 |
| Flyover Countries | 0 | - | 4.68 | 50,725 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,729 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,453 |
