| Landlocked Countries | 0 | - | 4.99 | 414,183 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,965,580 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,814 |
| Himalayan Countries | 0 | - | 4.95 | 135,543 |
| Andean Countries | 0 | - | 4.94 | 82,937 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,299 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,334 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,999 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,671 |
| Danube Countries | 0 | - | 4.97 | 71,129 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,832 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,595 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,600 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,513 |
| European Landlocked Countries | 0 | - | 4.99 | 145,827 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,291 |
| Countries with the Most Species | 0 | - | 4.99 | 95,278 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,434 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,216 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,386 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,988 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,615 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,995 |
| Countries in the Alps | 0 | - | 4.86 | 116,917 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,632 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,360 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,058 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,470 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,240 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,050 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,642 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,808 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,503 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,112 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,214 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,074 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,492 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,801 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,790 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,185 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,701 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,287 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,851 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,593 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,864 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,635 |
| Largest Countries By Category | 0 | - | 4.97 | 156,854 |
| Countries by Countries | 0 | - | 4.96 | 62,315 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,498 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,980 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,347 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,824 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,721,575 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,709 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,341 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,145 |
| Island Countries | 0 | - | 4.99 | 707,830 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,233 |
| Northernmost Countries | 0 | - | 4.99 | 358,024 |
| Countries of South America | 0 | - | 5.00 | 915,791 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,802 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,351 |
| "Land" Countries | 0 | - | 4.98 | 333,794 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,563 |
| Countries with Megacities | 0 | - | 4.99 | 247,450 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,405 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,164 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,817 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,079 |
| Countries by Official Language | 0 | - | 4.95 | 192,895 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,298 |
| Countries in their Native Language | 0 | - | 4.99 | 196,748 |
| Independence from Whom | 0 | - | 4.99 | 209,844 |
| Subdivisions by Country | 0 | - | 4.86 | 50,094 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,865 |
| Megadiverse Countries | 0 | - | 4.97 | 133,950 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,923 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,947 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,457 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,871 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,737 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,040 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,151 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,202 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,241 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,757 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,708 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,449 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,537 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,529 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,719 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,050 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,922 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,737 |
| World Map Quiz | 0 | - | 4.81 | 63,613 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,006 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,397 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,471 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,224 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,007 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,928 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,920 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,114 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,328 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,978 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,374 |
| Widest Countries East to West | 0 | - | 4.92 | 128,660 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,223 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,300 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,594 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,730 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,682 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,105 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,064 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,600 |
| Countries with Double Letters | 0 | - | 4.96 | 93,485 |
| Countries that End in N | 0 | - | 4.94 | 156,974 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,789 |
| Countries with Six Letters | 0 | - | 4.93 | 210,456 |
| Countries with W | 0 | - | 4.97 | 158,294 |
| Countries with Z | 0 | - | 4.98 | 288,002 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,617 |
| Countries That End in U | 0 | - | 4.95 | 119,548 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,684 |
| Countries that End in O | 0 | - | 4.92 | 158,590 |
| Countries that End in R | 0 | - | 4.87 | 118,303 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,880 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,194 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,411 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,550 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,089 |
| Countries That End in Y | 0 | - | 4.90 | 185,234 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,466 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,768 |
| Countries that End in I | 0 | - | 4.94 | 134,465 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,296 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,236 |
| Countries That End in NIA | 0 | - | 4.92 | 109,053 |
| Countries That End in BIA | 0 | - | 4.92 | 147,764 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,139 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,543 |
| Countries That End in RIA | 0 | - | 4.93 | 126,122 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,068 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,297 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,559 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,939 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,430 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,959 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,178 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,703 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,566 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,839 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,214 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,876 |
| Countries that End in L | 0 | - | 4.94 | 155,793 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,559 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,998 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,554 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,348 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,464 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,510 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,348 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 137,033 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,420 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,726 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,735 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,723 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,185 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,436 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,355 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,046 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,894 |
| One Border Countries | 0 | - | 4.98 | 464,809 |
| Top Producing Countries | 0 | - | 4.63 | 115,944 |
| ISO Country Codes | 0 | - | 4.45 | 82,146 |
| Countries on the Equator | 0 | - | 4.63 | 140,344 |
| Members of the Arab League | 0 | - | 4.77 | 75,482 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,592 |
| Separatist Movements | 0 | - | 4.44 | 45,654 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,639 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,645 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,579 |
| Westernmost Countries | 0 | - | 4.50 | 49,433 |
| Easternmost Countries | 0 | - | 4.75 | 62,688 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,479 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,923 |
| Indochina Countries | 0 | - | 4.74 | 65,952 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,531 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,789 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,884 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,962 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,205 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,431 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,609 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,732 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,014 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,419 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,280 |
| Flyover Countries | 0 | - | 4.67 | 50,578 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,442 |
