| Landlocked Countries | 0 | - | 4.99 | 419,234 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,354,766 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,120 |
| Himalayan Countries | 0 | - | 4.95 | 137,542 |
| Andean Countries | 0 | - | 4.95 | 83,999 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,266 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,741 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,887 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,390 |
| Danube Countries | 0 | - | 4.97 | 71,699 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,608 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,092 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,705 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,778 |
| European Landlocked Countries | 0 | - | 4.99 | 146,809 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,170 |
| Countries with the Most Species | 0 | - | 4.99 | 102,945 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,316 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,437 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,598 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,328 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,005 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,391 |
| Countries in the Alps | 0 | - | 4.87 | 117,737 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,167 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,427 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,439 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,025 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,138 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,737 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,313 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,217 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,981 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,580 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,502 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,351 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,954 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,211 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,236 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,248 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,084 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,584 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,561 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,513 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,294 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,015 |
| Largest Countries By Category | 0 | - | 4.97 | 157,684 |
| Countries by Countries | 0 | - | 4.96 | 62,865 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,252 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,171 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,479 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,353 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,758,606 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,248 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,682 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,258 |
| Island Countries | 0 | - | 4.99 | 709,884 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,378 |
| Northernmost Countries | 0 | - | 4.99 | 360,610 |
| Countries of South America | 0 | - | 5.00 | 923,267 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,635 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,243 |
| "Land" Countries | 0 | - | 4.98 | 335,863 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,115 |
| Countries with Megacities | 0 | - | 4.99 | 261,240 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,971 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,043 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,250 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,062 |
| Countries by Official Language | 0 | - | 4.95 | 194,687 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,605 |
| Countries in their Native Language | 0 | - | 4.99 | 198,239 |
| Independence from Whom | 0 | - | 4.99 | 211,386 |
| Subdivisions by Country | 0 | - | 4.86 | 50,299 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,763 |
| Megadiverse Countries | 0 | - | 4.96 | 134,789 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,582 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,201 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,765 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,027 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,737 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,398 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,017 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,861 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,506 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,999 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,045 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,731 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,008 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,794 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,168 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,337 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,343 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,275 |
| World Map Quiz | 0 | - | 4.81 | 64,631 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,730 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,063 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,564 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,961 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,680 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,412 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,550 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,706 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,857 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,286 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,314 |
| Widest Countries East to West | 0 | - | 4.92 | 129,398 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,388 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,986 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,003 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,535 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,253 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,576 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,247 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,732 |
| Countries with Double Letters | 0 | - | 4.97 | 95,140 |
| Countries that End in N | 0 | - | 4.95 | 170,085 |
| Countries with Five Letters | 0 | - | 4.96 | 280,514 |
| Countries with Six Letters | 0 | - | 4.94 | 212,540 |
| Countries with W | 0 | - | 4.97 | 159,547 |
| Countries with Z | 0 | - | 4.98 | 289,878 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,793 |
| Countries That End in U | 0 | - | 4.95 | 120,425 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,795 |
| Countries that End in O | 0 | - | 4.92 | 159,216 |
| Countries that End in R | 0 | - | 4.87 | 118,748 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,524 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,385 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,146 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,103 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,694 |
| Countries That End in Y | 0 | - | 4.91 | 185,657 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,274 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,462 |
| Countries that End in I | 0 | - | 4.94 | 134,883 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,124 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,588 |
| Countries That End in NIA | 0 | - | 4.92 | 109,532 |
| Countries That End in BIA | 0 | - | 4.93 | 148,869 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,753 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,090 |
| Countries That End in RIA | 0 | - | 4.93 | 126,558 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,662 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,771 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,272 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,638 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,165 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,343 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,702 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,266 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,160 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,213 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,862 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,569 |
| Countries that End in L | 0 | - | 4.94 | 156,557 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,141 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,159 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,856 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,736 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,795 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,836 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,217 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,661 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,162 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,647 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,603 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,964 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,609 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,688 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,725 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,835 |
| One Border Countries | 0 | - | 4.98 | 467,843 |
| Top Producing Countries | 0 | - | 4.63 | 116,143 |
| ISO Country Codes | 0 | - | 4.45 | 82,363 |
| Countries on the Equator | 0 | - | 4.63 | 140,651 |
| Members of the Arab League | 0 | - | 4.77 | 75,582 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,792 |
| Separatist Movements | 0 | - | 4.44 | 45,822 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,066 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,762 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,163 |
| Westernmost Countries | 0 | - | 4.42 | 60,967 |
| Easternmost Countries | 0 | - | 4.75 | 62,834 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,595 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,436 |
| Indochina Countries | 0 | - | 4.74 | 66,106 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,590 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,258 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,955 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,059 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,331 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,606 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,800 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,866 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,292 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,613 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,477 |
| Flyover Countries | 0 | - | 4.68 | 50,740 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,745 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,459 |
