| Landlocked Countries | 0 | - | 4.99 | 413,321 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,895,549 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,453 |
| Himalayan Countries | 0 | - | 4.95 | 135,241 |
| Andean Countries | 0 | - | 4.94 | 82,766 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,179 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,119 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,849 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,555 |
| Danube Countries | 0 | - | 4.97 | 71,051 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,717 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,506 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,405 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,332 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,150 |
| Countries with the Most Species | 0 | - | 4.99 | 95,228 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,293 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,192 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,357 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,941 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,553 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,922 |
| Countries in the Alps | 0 | - | 4.86 | 116,772 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,527 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,195 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,986 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,393 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,117 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,972 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,536 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,727 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,138 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,024 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,185 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,025 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,420 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,714 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,725 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,004 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,616 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,240 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,737 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,111 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,544 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,577 |
| Largest Countries By Category | 0 | - | 4.97 | 156,704 |
| Countries by Countries | 0 | - | 4.96 | 62,232 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,331 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,953 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,318 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,726 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,036 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,494 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,025 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,645 |
| Island Countries | 0 | - | 4.99 | 707,497 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,082 |
| Northernmost Countries | 0 | - | 4.99 | 357,558 |
| Countries of South America | 0 | - | 5.00 | 914,214 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,810 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,241 |
| "Land" Countries | 0 | - | 4.98 | 333,560 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,004 |
| Countries with Megacities | 0 | - | 4.99 | 246,547 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,926 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,807 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,375 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,761 |
| Countries by Official Language | 0 | - | 4.95 | 192,708 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,041 |
| Countries in their Native Language | 0 | - | 4.99 | 196,568 |
| Independence from Whom | 0 | - | 4.99 | 209,609 |
| Subdivisions by Country | 0 | - | 4.86 | 50,052 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,692 |
| Megadiverse Countries | 0 | - | 4.97 | 133,867 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,740 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,904 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,408 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,613 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,981 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,857 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,122 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,204 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,734 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,509 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,400 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,476 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,486 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,646 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,005 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,501 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,506 |
| World Map Quiz | 0 | - | 4.81 | 63,460 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,493 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,293 |
| Countries by Founding Story | 0 | - | 4.95 | 76,499 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,275 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,947 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,909 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,651 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,824 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,030 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,241 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,925 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,313 |
| Widest Countries East to West | 0 | - | 4.92 | 128,580 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,210 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,169 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,554 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,670 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,598 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,014 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,046 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,569 |
| Countries with Double Letters | 0 | - | 4.97 | 93,315 |
| Countries that End in N | 0 | - | 4.94 | 156,381 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,607 |
| Countries with Six Letters | 0 | - | 4.93 | 210,284 |
| Countries with W | 0 | - | 4.97 | 158,179 |
| Countries with Z | 0 | - | 4.98 | 287,794 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,502 |
| Countries That End in U | 0 | - | 4.95 | 119,490 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,482 |
| Countries that End in O | 0 | - | 4.92 | 158,526 |
| Countries that End in R | 0 | - | 4.87 | 118,249 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,847 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,954 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,284 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,458 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,974 |
| Countries That End in Y | 0 | - | 4.90 | 185,184 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,316 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,630 |
| Countries that End in I | 0 | - | 4.94 | 134,381 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,130 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,175 |
| Countries That End in NIA | 0 | - | 4.92 | 108,975 |
| Countries That End in BIA | 0 | - | 4.92 | 147,676 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,026 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,451 |
| Countries That End in RIA | 0 | - | 4.93 | 126,055 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,975 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,125 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,487 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,869 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,327 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,914 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,089 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,615 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,466 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,804 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,091 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,776 |
| Countries that End in L | 0 | - | 4.94 | 155,696 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,007 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,977 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,496 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,269 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,407 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,715 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,039 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,890 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,142 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,333 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,487 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,597 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,161 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,411 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,297 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,516 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,484 |
| One Border Countries | 0 | - | 4.98 | 464,154 |
| Top Producing Countries | 0 | - | 4.63 | 115,895 |
| ISO Country Codes | 0 | - | 4.45 | 82,111 |
| Countries on the Equator | 0 | - | 4.61 | 140,282 |
| Members of the Arab League | 0 | - | 4.77 | 75,458 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,553 |
| Separatist Movements | 0 | - | 4.44 | 45,622 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,562 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,631 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,540 |
| Westernmost Countries | 0 | - | 4.50 | 49,417 |
| Easternmost Countries | 0 | - | 4.75 | 62,676 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,454 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,835 |
| Indochina Countries | 0 | - | 4.74 | 65,908 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,517 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,755 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,873 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,952 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,178 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,396 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,568 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,711 |
| Most Populous Countries By Category | 0 | - | 4.55 | 84,963 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,390 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,234 |
| Flyover Countries | 0 | - | 4.64 | 50,544 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,381 |
