| Landlocked Countries | 0 | - | 4.99 | 423,007 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,663,292 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,018 |
| Himalayan Countries | 0 | - | 4.95 | 139,180 |
| Andean Countries | 0 | - | 4.93 | 84,873 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,090 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,230 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,675 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,979 |
| Danube Countries | 0 | - | 4.97 | 72,133 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,185 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,540 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,528 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,038 |
| European Landlocked Countries | 0 | - | 4.99 | 147,274 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,835 |
| Countries with the Most Species | 0 | - | 4.99 | 103,345 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,961 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,647 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,766 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,618 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,365 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,783 |
| Countries in the Alps | 0 | - | 4.87 | 118,361 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,754 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,282 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,755 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,715 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,633 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,043 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,815 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,608 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,249 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,953 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,720 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,589 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,323 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,564 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,635 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,157 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,400 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,741 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,245 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,503 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,421 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,309 |
| Largest Countries By Category | 0 | - | 4.97 | 158,395 |
| Countries by Countries | 0 | - | 4.96 | 63,359 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,842 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,324 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,592 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,792 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,785,852 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,503 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,838 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,985 |
| Island Countries | 0 | - | 4.99 | 711,417 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,149 |
| Northernmost Countries | 0 | - | 4.99 | 362,481 |
| Countries of South America | 0 | - | 5.00 | 928,775 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,706 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,499 |
| "Land" Countries | 0 | - | 4.98 | 337,632 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,196 |
| Countries with Megacities | 0 | - | 4.99 | 265,291 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,020 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,635 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,276 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,709 |
| Countries by Official Language | 0 | - | 4.95 | 195,466 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,669 |
| Countries in their Native Language | 0 | - | 4.99 | 199,240 |
| Independence from Whom | 0 | - | 4.99 | 212,329 |
| Subdivisions by Country | 0 | - | 4.87 | 50,483 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,908 |
| Megadiverse Countries | 0 | - | 4.96 | 135,093 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,272 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,413 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,293 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,140 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,266 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,660 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,614 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,415 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,708 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,181 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,899 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,949 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,268 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,012 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,424 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,549 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,207 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,526 |
| World Map Quiz | 0 | - | 4.81 | 65,247 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,823 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,453 |
| Countries by Founding Story | 0 | - | 4.95 | 77,457 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,306 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,401 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,114 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,560 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,011 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,121 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,399 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,495 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,650 |
| Widest Countries East to West | 0 | - | 4.92 | 129,749 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,480 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,511 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,324 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,839 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,697 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,970 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,410 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,821 |
| Countries with Double Letters | 0 | - | 4.96 | 96,473 |
| Countries that End in N | 0 | - | 4.95 | 171,359 |
| Countries with Five Letters | 0 | - | 4.96 | 282,904 |
| Countries with Six Letters | 0 | - | 4.94 | 213,808 |
| Countries with W | 0 | - | 4.96 | 160,499 |
| Countries with Z | 0 | - | 4.98 | 291,723 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,857 |
| Countries That End in U | 0 | - | 4.95 | 120,941 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,636 |
| Countries that End in O | 0 | - | 4.92 | 159,592 |
| Countries that End in R | 0 | - | 4.87 | 119,025 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,787 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,310 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,810 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,580 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,486 |
| Countries That End in Y | 0 | - | 4.91 | 185,942 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,056 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,985 |
| Countries that End in I | 0 | - | 4.94 | 135,170 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,246 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,877 |
| Countries That End in NIA | 0 | - | 4.92 | 109,856 |
| Countries That End in BIA | 0 | - | 4.93 | 149,305 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,213 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,524 |
| Countries That End in RIA | 0 | - | 4.93 | 126,879 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,113 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,883 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,844 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,277 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,821 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,638 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,109 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,467 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,626 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,485 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,405 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,095 |
| Countries that End in L | 0 | - | 4.94 | 156,921 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,261 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,288 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,092 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,022 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,064 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,942 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,802 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,227 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,946 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,603 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,967 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,139 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,735 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,003 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,857 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,380 |
| One Border Countries | 0 | - | 4.98 | 470,455 |
| Top Producing Countries | 0 | - | 4.63 | 116,299 |
| ISO Country Codes | 0 | - | 4.49 | 91,448 |
| Countries on the Equator | 0 | - | 4.63 | 141,060 |
| Members of the Arab League | 0 | - | 4.77 | 75,660 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,966 |
| Separatist Movements | 0 | - | 4.45 | 45,940 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,357 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,856 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,324 |
| Westernmost Countries | 0 | - | 4.43 | 62,482 |
| Easternmost Countries | 0 | - | 4.75 | 63,009 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,700 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,768 |
| Indochina Countries | 0 | - | 4.74 | 66,255 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,657 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,406 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,994 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,130 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,439 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,760 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 74,044 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,003 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,524 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,761 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,658 |
| Flyover Countries | 0 | - | 4.69 | 50,895 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 74,079 |
