| Landlocked Countries | 0 | - | 4.99 | 418,683 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,318,509 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,878 |
| Himalayan Countries | 0 | - | 4.94 | 137,312 |
| Andean Countries | 0 | - | 4.95 | 83,874 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,158 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,564 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,793 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,315 |
| Danube Countries | 0 | - | 4.97 | 71,624 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,510 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,029 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,594 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,674 |
| European Landlocked Countries | 0 | - | 4.99 | 146,741 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,096 |
| Countries with the Most Species | 0 | - | 4.99 | 102,883 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,227 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,425 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,579 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,286 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,962 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,343 |
| Countries in the Alps | 0 | - | 4.87 | 117,643 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,105 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,320 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,392 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,958 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,059 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,428 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,249 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,162 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,948 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,529 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,462 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,324 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,903 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,174 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,187 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,134 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,045 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,558 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,488 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,261 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,165 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,980 |
| Largest Countries By Category | 0 | - | 4.97 | 157,594 |
| Countries by Countries | 0 | - | 4.96 | 62,816 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,171 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,153 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,465 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,300 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,385 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,771 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,538 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,972 |
| Island Countries | 0 | - | 4.99 | 709,645 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,805 |
| Northernmost Countries | 0 | - | 4.99 | 360,370 |
| Countries of South America | 0 | - | 5.00 | 922,596 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,623 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,638 |
| "Land" Countries | 0 | - | 4.98 | 335,743 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,948 |
| Countries with Megacities | 0 | - | 4.99 | 258,097 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,822 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,946 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,104 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,954 |
| Countries by Official Language | 0 | - | 4.95 | 194,598 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,471 |
| Countries in their Native Language | 0 | - | 4.99 | 198,141 |
| Independence from Whom | 0 | - | 4.99 | 211,254 |
| Subdivisions by Country | 0 | - | 4.86 | 50,276 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,656 |
| Megadiverse Countries | 0 | - | 4.96 | 134,750 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,517 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,173 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,736 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,679 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,361 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,941 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,828 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,470 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,979 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,901 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,701 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,975 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,758 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,134 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,309 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,197 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,131 |
| World Map Quiz | 0 | - | 4.81 | 64,487 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,506 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,010 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,460 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,903 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,615 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,276 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,495 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,653 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,806 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,248 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,265 |
| Widest Countries East to West | 0 | - | 4.92 | 129,346 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,377 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,933 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,985 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,499 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,191 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,524 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,224 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,724 |
| Countries with Double Letters | 0 | - | 4.97 | 95,050 |
| Countries that End in N | 0 | - | 4.95 | 169,912 |
| Countries with Five Letters | 0 | - | 4.96 | 279,911 |
| Countries with Six Letters | 0 | - | 4.94 | 212,431 |
| Countries with W | 0 | - | 4.97 | 159,497 |
| Countries with Z | 0 | - | 4.98 | 289,755 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,699 |
| Countries That End in U | 0 | - | 4.95 | 120,398 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,722 |
| Countries that End in O | 0 | - | 4.92 | 159,182 |
| Countries that End in R | 0 | - | 4.87 | 118,727 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,501 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,280 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,079 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,065 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,651 |
| Countries That End in Y | 0 | - | 4.90 | 185,639 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,194 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,396 |
| Countries that End in I | 0 | - | 4.94 | 134,852 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,044 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,565 |
| Countries That End in NIA | 0 | - | 4.92 | 109,499 |
| Countries That End in BIA | 0 | - | 4.93 | 148,824 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,685 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,027 |
| Countries That End in RIA | 0 | - | 4.93 | 126,518 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,603 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,631 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,193 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,535 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,087 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,299 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,658 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,215 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,099 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,184 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,802 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,512 |
| Countries that End in L | 0 | - | 4.94 | 156,529 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,912 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,152 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,825 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,701 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,753 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,738 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,132 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,590 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,089 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,583 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,565 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,941 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,589 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,646 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,972 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,635 |
| One Border Countries | 0 | - | 4.98 | 467,554 |
| Top Producing Countries | 0 | - | 4.63 | 116,123 |
| ISO Country Codes | 0 | - | 4.45 | 82,345 |
| Countries on the Equator | 0 | - | 4.63 | 140,619 |
| Members of the Arab League | 0 | - | 4.77 | 75,572 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,768 |
| Separatist Movements | 0 | - | 4.44 | 45,807 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,021 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,745 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,138 |
| Westernmost Countries | 0 | - | 4.50 | 56,659 |
| Easternmost Countries | 0 | - | 4.75 | 62,807 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,588 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,384 |
| Indochina Countries | 0 | - | 4.74 | 66,091 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,577 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,237 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,950 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,052 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,319 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,589 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,778 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,854 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,262 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,593 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,455 |
| Flyover Countries | 0 | - | 4.68 | 50,718 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,721 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,450 |
