| Landlocked Countries | 0 | - | 4.99 | 417,102 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,199,135 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,148 |
| Himalayan Countries | 0 | - | 4.95 | 136,703 |
| Andean Countries | 0 | - | 4.95 | 83,575 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,839 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,124 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,501 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,098 |
| Danube Countries | 0 | - | 4.97 | 71,477 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,285 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,886 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,265 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,254 |
| European Landlocked Countries | 0 | - | 4.99 | 146,177 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,840 |
| Countries with the Most Species | 0 | - | 4.99 | 102,282 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,974 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,351 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,532 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,199 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,845 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,221 |
| Countries in the Alps | 0 | - | 4.86 | 117,402 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,945 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,013 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,289 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,787 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,882 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,302 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,041 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,025 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,850 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,385 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,387 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,223 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,772 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,035 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,044 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,808 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,927 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,456 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,289 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,261 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,702 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,862 |
| Largest Countries By Category | 0 | - | 4.97 | 157,339 |
| Countries by Countries | 0 | - | 4.96 | 62,650 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,936 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,096 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,415 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,136 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,744,011 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,353 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,022 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,107 |
| Island Countries | 0 | - | 4.99 | 709,016 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,887 |
| Northernmost Countries | 0 | - | 4.99 | 359,620 |
| Countries of South America | 0 | - | 5.00 | 920,323 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,818 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,286 |
| "Land" Countries | 0 | - | 4.98 | 334,957 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,445 |
| Countries with Megacities | 0 | - | 4.99 | 249,327 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,301 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,640 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,620 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,618 |
| Countries by Official Language | 0 | - | 4.95 | 194,165 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,972 |
| Countries in their Native Language | 0 | - | 4.99 | 197,774 |
| Independence from Whom | 0 | - | 4.99 | 210,923 |
| Subdivisions by Country | 0 | - | 4.86 | 50,218 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,425 |
| Megadiverse Countries | 0 | - | 4.96 | 134,585 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,947 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,099 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,652 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,959 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,501 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,259 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,674 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,580 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,395 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,817 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,416 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,604 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,705 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,672 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,883 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,239 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,603 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,701 |
| World Map Quiz | 0 | - | 4.81 | 64,189 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,636 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,753 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,140 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,723 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,450 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,828 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,322 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,507 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,670 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,171 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,881 |
| Widest Countries East to West | 0 | - | 4.92 | 129,196 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,337 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,715 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,942 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,986 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,025 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,399 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,138 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,685 |
| Countries with Double Letters | 0 | - | 4.96 | 94,387 |
| Countries that End in N | 0 | - | 4.95 | 168,162 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 267,001 |
| Countries with Six Letters | 0 | - | 4.93 | 211,523 |
| Countries with W | 0 | - | 4.97 | 159,009 |
| Countries with Z | 0 | - | 4.98 | 289,061 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,217 |
| Countries That End in U | 0 | - | 4.95 | 120,084 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,287 |
| Countries that End in O | 0 | - | 4.92 | 158,957 |
| Countries that End in R | 0 | - | 4.87 | 118,565 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,358 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,882 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,820 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,873 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,458 |
| Countries That End in Y | 0 | - | 4.90 | 185,483 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,933 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,162 |
| Countries that End in I | 0 | - | 4.94 | 134,710 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,765 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,443 |
| Countries That End in NIA | 0 | - | 4.92 | 109,331 |
| Countries That End in BIA | 0 | - | 4.93 | 148,626 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,478 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,825 |
| Countries That End in RIA | 0 | - | 4.93 | 126,379 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,395 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,197 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,926 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,261 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,877 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,183 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,493 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,014 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,896 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,060 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,588 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,283 |
| Countries that End in L | 0 | - | 4.94 | 156,340 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,142 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,092 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,733 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,595 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,653 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,402 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,867 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,410 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,877 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,325 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,083 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,886 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,313 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,539 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,542 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,634 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,034 |
| One Border Countries | 0 | - | 4.98 | 466,691 |
| Top Producing Countries | 0 | - | 4.63 | 116,059 |
| ISO Country Codes | 0 | - | 4.45 | 82,287 |
| Countries on the Equator | 0 | - | 4.63 | 140,534 |
| Members of the Arab League | 0 | - | 4.77 | 75,542 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,704 |
| Separatist Movements | 0 | - | 4.44 | 45,750 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,870 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,703 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,078 |
| Westernmost Countries | 0 | - | 4.50 | 49,479 |
| Easternmost Countries | 0 | - | 4.75 | 62,749 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,551 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,213 |
| Indochina Countries | 0 | - | 4.74 | 66,045 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,566 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,170 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,925 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,022 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,293 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,539 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,713 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,819 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,178 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,537 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,392 |
| Flyover Countries | 0 | - | 4.68 | 50,667 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,623 |
