| Landlocked Countries | 0 | - | 4.99 | 413,406 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,902,568 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,493 |
| Himalayan Countries | 0 | - | 4.95 | 135,278 |
| Andean Countries | 0 | - | 4.94 | 82,788 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,193 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,140 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,857 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,566 |
| Danube Countries | 0 | - | 4.97 | 71,061 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,730 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,516 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,421 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,349 |
| European Landlocked Countries | 0 | - | 4.99 | 145,730 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,169 |
| Countries with the Most Species | 0 | - | 4.99 | 95,234 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,308 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,193 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,358 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,947 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,561 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,935 |
| Countries in the Alps | 0 | - | 4.86 | 116,787 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,534 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,218 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,991 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,403 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,131 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,977 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,550 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,735 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,177 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,032 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,189 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,030 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,429 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,721 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,735 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,016 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,619 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,245 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,749 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,168 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,593 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,589 |
| Largest Countries By Category | 0 | - | 4.97 | 156,718 |
| Countries by Countries | 0 | - | 4.96 | 62,239 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,347 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,957 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,323 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,738 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,796 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,614 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,052 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,730 |
| Island Countries | 0 | - | 4.99 | 707,538 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,203 |
| Northernmost Countries | 0 | - | 4.99 | 357,617 |
| Countries of South America | 0 | - | 5.00 | 914,362 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,049 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,572 |
| "Land" Countries | 0 | - | 4.98 | 333,588 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,067 |
| Countries with Megacities | 0 | - | 4.99 | 246,659 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,996 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,849 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,422 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,783 |
| Countries by Official Language | 0 | - | 4.95 | 192,727 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,063 |
| Countries in their Native Language | 0 | - | 4.99 | 196,593 |
| Independence from Whom | 0 | - | 4.99 | 209,629 |
| Subdivisions by Country | 0 | - | 4.86 | 50,058 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,708 |
| Megadiverse Countries | 0 | - | 4.97 | 133,881 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,754 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,910 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,413 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,853 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,625 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,986 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,881 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,129 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,208 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,736 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,524 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,403 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,479 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,490 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,651 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,011 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,708 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,527 |
| World Map Quiz | 0 | - | 4.81 | 63,471 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,550 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,308 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,303 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,964 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,923 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,684 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,832 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,038 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,253 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,931 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,322 |
| Widest Countries East to West | 0 | - | 4.92 | 128,591 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,215 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,181 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,558 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,676 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,609 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,023 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,048 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,571 |
| Countries with Double Letters | 0 | - | 4.97 | 93,346 |
| Countries that End in N | 0 | - | 4.94 | 156,525 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,634 |
| Countries with Six Letters | 0 | - | 4.93 | 210,308 |
| Countries with W | 0 | - | 4.97 | 158,199 |
| Countries with Z | 0 | - | 4.98 | 287,824 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,518 |
| Countries That End in U | 0 | - | 4.95 | 119,498 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,499 |
| Countries that End in O | 0 | - | 4.92 | 158,534 |
| Countries that End in R | 0 | - | 4.87 | 118,257 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,850 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,975 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,297 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,466 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,982 |
| Countries That End in Y | 0 | - | 4.90 | 185,189 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,335 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,645 |
| Countries that End in I | 0 | - | 4.94 | 134,397 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,144 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,180 |
| Countries That End in NIA | 0 | - | 4.92 | 108,987 |
| Countries That End in BIA | 0 | - | 4.92 | 147,689 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,039 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,467 |
| Countries That End in RIA | 0 | - | 4.93 | 126,063 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,982 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,142 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,498 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,875 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,335 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,916 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,096 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,625 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,478 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,805 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,107 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,783 |
| Countries that End in L | 0 | - | 4.94 | 155,704 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,066 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,981 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,499 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,277 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,412 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,794 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,052 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,898 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,153 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,343 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,499 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,603 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,164 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,414 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,304 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,697 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,533 |
| One Border Countries | 0 | - | 4.98 | 464,249 |
| Top Producing Countries | 0 | - | 4.63 | 115,896 |
| ISO Country Codes | 0 | - | 4.45 | 82,113 |
| Countries on the Equator | 0 | - | 4.61 | 140,287 |
| Members of the Arab League | 0 | - | 4.77 | 75,464 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,559 |
| Separatist Movements | 0 | - | 4.44 | 45,624 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,570 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,633 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,543 |
| Westernmost Countries | 0 | - | 4.50 | 49,420 |
| Easternmost Countries | 0 | - | 4.75 | 62,677 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,459 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,845 |
| Indochina Countries | 0 | - | 4.74 | 65,913 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,521 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,759 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,874 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,953 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,180 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,398 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,570 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,714 |
| Most Populous Countries By Category | 0 | - | 4.55 | 84,966 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,391 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,241 |
| Flyover Countries | 0 | - | 4.64 | 50,548 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,385 |
