| Landlocked Countries | 0 | - | 4.99 | 422,620 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,633,302 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,840 |
| Himalayan Countries | 0 | - | 4.95 | 139,022 |
| Andean Countries | 0 | - | 4.93 | 84,792 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,020 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,096 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,609 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,924 |
| Danube Countries | 0 | - | 4.97 | 72,096 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,127 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,497 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,449 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,934 |
| European Landlocked Countries | 0 | - | 4.99 | 147,230 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,765 |
| Countries with the Most Species | 0 | - | 4.99 | 103,306 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,884 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,631 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,748 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,597 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,317 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,742 |
| Countries in the Alps | 0 | - | 4.87 | 118,311 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,517 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,180 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,720 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,673 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,585 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,998 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,750 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,568 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,226 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,920 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,691 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,572 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,296 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,539 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,604 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,058 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,367 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,483 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,201 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,284 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,320 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,282 |
| Largest Countries By Category | 0 | - | 4.97 | 158,341 |
| Countries by Countries | 0 | - | 4.96 | 63,315 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,773 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,310 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,581 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,749 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,783,256 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,165 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,694 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,720 |
| Island Countries | 0 | - | 4.99 | 711,262 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,663 |
| Northernmost Countries | 0 | - | 4.99 | 362,273 |
| Countries of South America | 0 | - | 5.00 | 928,243 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,084 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,253 |
| "Land" Countries | 0 | - | 4.98 | 337,528 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,085 |
| Countries with Megacities | 0 | - | 4.99 | 265,006 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,905 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,581 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,166 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,653 |
| Countries by Official Language | 0 | - | 4.95 | 195,371 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,544 |
| Countries in their Native Language | 0 | - | 4.99 | 199,160 |
| Independence from Whom | 0 | - | 4.99 | 212,248 |
| Subdivisions by Country | 0 | - | 4.87 | 50,460 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,843 |
| Megadiverse Countries | 0 | - | 4.96 | 135,065 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,201 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,390 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,270 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,129 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,211 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,637 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,557 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,160 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,692 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,168 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,815 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,930 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,241 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,999 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,393 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,524 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,274 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,391 |
| World Map Quiz | 0 | - | 4.81 | 65,182 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,611 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,411 |
| Countries by Founding Story | 0 | - | 4.95 | 77,425 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,216 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,350 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,056 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,410 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,958 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,068 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,350 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,478 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,615 |
| Widest Countries East to West | 0 | - | 4.92 | 129,715 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,471 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,456 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,143 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,811 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,643 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,930 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,396 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,813 |
| Countries with Double Letters | 0 | - | 4.96 | 96,378 |
| Countries that End in N | 0 | - | 4.95 | 171,267 |
| Countries with Five Letters | 0 | - | 4.96 | 282,749 |
| Countries with Six Letters | 0 | - | 4.94 | 213,703 |
| Countries with W | 0 | - | 4.97 | 160,438 |
| Countries with Z | 0 | - | 4.98 | 291,614 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,801 |
| Countries That End in U | 0 | - | 4.95 | 120,899 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,555 |
| Countries that End in O | 0 | - | 4.92 | 159,555 |
| Countries that End in R | 0 | - | 4.87 | 119,003 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,764 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,230 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,759 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,529 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,453 |
| Countries That End in Y | 0 | - | 4.91 | 185,911 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,007 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,930 |
| Countries that End in I | 0 | - | 4.94 | 135,134 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,183 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,852 |
| Countries That End in NIA | 0 | - | 4.92 | 109,831 |
| Countries That End in BIA | 0 | - | 4.93 | 149,267 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,168 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,479 |
| Countries That End in RIA | 0 | - | 4.93 | 126,853 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,073 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,779 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,783 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,214 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,767 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,612 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,076 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,461 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,583 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,459 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,355 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,052 |
| Countries that End in L | 0 | - | 4.94 | 156,886 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,066 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,284 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,065 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,994 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,040 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,871 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,737 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,194 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,900 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,546 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,920 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,127 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,723 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,904 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,191 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,226 |
| One Border Countries | 0 | - | 4.98 | 470,219 |
| Top Producing Countries | 0 | - | 4.63 | 116,280 |
| ISO Country Codes | 0 | - | 4.49 | 91,402 |
| Countries on the Equator | 0 | - | 4.63 | 141,041 |
| Members of the Arab League | 0 | - | 4.77 | 75,656 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,943 |
| Separatist Movements | 0 | - | 4.45 | 45,921 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,329 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,847 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,308 |
| Westernmost Countries | 0 | - | 4.43 | 62,456 |
| Easternmost Countries | 0 | - | 4.75 | 62,993 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,688 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,730 |
| Indochina Countries | 0 | - | 4.74 | 66,237 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,652 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,394 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,991 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,122 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,430 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,740 |
| Countries that are the Source of Refugees | 0 | - | 4.80 | 73,304 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,981 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,501 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,751 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,642 |
| Flyover Countries | 0 | - | 4.69 | 50,870 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 74,057 |
