| Landlocked Countries | 0 | - | 4.99 | 421,523 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,546,551 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,218 |
| Himalayan Countries | 0 | - | 4.95 | 138,516 |
| Andean Countries | 0 | - | 4.93 | 84,494 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,676 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,666 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,306 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,717 |
| Danube Countries | 0 | - | 4.97 | 71,948 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,947 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,368 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,201 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,668 |
| European Landlocked Countries | 0 | - | 4.99 | 147,077 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,546 |
| Countries with the Most Species | 0 | - | 4.99 | 103,186 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,685 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,556 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,697 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,507 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,187 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,606 |
| Countries in the Alps | 0 | - | 4.87 | 118,135 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,768 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,954 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,612 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,552 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,438 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,909 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,616 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,451 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,152 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,801 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,620 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,485 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,178 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,425 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,476 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,781 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,269 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 62,815 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,984 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,709 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,961 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,179 |
| Largest Countries By Category | 0 | - | 4.97 | 158,126 |
| Countries by Countries | 0 | - | 4.96 | 63,141 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,622 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,264 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,552 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,632 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,775,427 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,200 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,378 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,932 |
| Island Countries | 0 | - | 4.99 | 710,877 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,270 |
| Northernmost Countries | 0 | - | 4.99 | 361,754 |
| Countries of South America | 0 | - | 5.00 | 926,692 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,042 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,875,780 |
| "Land" Countries | 0 | - | 4.98 | 337,184 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,771 |
| Countries with Megacities | 0 | - | 4.99 | 264,279 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,624 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,405 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,892 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,469 |
| Countries by Official Language | 0 | - | 4.95 | 195,165 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,245 |
| Countries in their Native Language | 0 | - | 4.99 | 198,962 |
| Independence from Whom | 0 | - | 4.99 | 211,976 |
| Subdivisions by Country | 0 | - | 4.86 | 50,405 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,646 |
| Megadiverse Countries | 0 | - | 4.96 | 134,973 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,000 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,325 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,109 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,091 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,055 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,568 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,399 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,000 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,622 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,114 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,596 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,848 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,175 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,935 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,323 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,467 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,524 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,039 |
| World Map Quiz | 0 | - | 4.81 | 65,030 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,028 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,303 |
| Countries by Founding Story | 0 | - | 4.95 | 77,326 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,998 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,222 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,950 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,084 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,837 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,968 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,261 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,412 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,534 |
| Widest Countries East to West | 0 | - | 4.92 | 129,603 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,438 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,329 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,104 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,733 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,544 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,814 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,356 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,790 |
| Countries with Double Letters | 0 | - | 4.96 | 96,115 |
| Countries that End in N | 0 | - | 4.95 | 170,998 |
| Countries with Five Letters | 0 | - | 4.96 | 282,211 |
| Countries with Six Letters | 0 | - | 4.94 | 213,426 |
| Countries with W | 0 | - | 4.97 | 160,235 |
| Countries with Z | 0 | - | 4.98 | 291,306 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,597 |
| Countries That End in U | 0 | - | 4.95 | 120,793 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,358 |
| Countries that End in O | 0 | - | 4.92 | 159,473 |
| Countries that End in R | 0 | - | 4.87 | 118,937 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,695 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,968 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,624 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,418 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,344 |
| Countries That End in Y | 0 | - | 4.91 | 185,842 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,828 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,789 |
| Countries that End in I | 0 | - | 4.94 | 135,054 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,003 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,783 |
| Countries That End in NIA | 0 | - | 4.92 | 109,734 |
| Countries That End in BIA | 0 | - | 4.93 | 149,144 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,049 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,377 |
| Countries That End in RIA | 0 | - | 4.93 | 126,771 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,967 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,463 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,635 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,025 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,592 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,544 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,975 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,428 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,472 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,388 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,222 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,920 |
| Countries that End in L | 0 | - | 4.94 | 156,782 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,478 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,247 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,989 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,911 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,957 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,662 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,587 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,936 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,482 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,367 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,826 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,072 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,691 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,842 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,413 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,794 |
| One Border Countries | 0 | - | 4.98 | 469,612 |
| Top Producing Countries | 0 | - | 4.63 | 116,247 |
| ISO Country Codes | 0 | - | 4.48 | 91,113 |
| Countries on the Equator | 0 | - | 4.63 | 140,808 |
| Members of the Arab League | 0 | - | 4.77 | 75,630 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,898 |
| Separatist Movements | 0 | - | 4.45 | 45,898 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,240 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,825 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,262 |
| Westernmost Countries | 0 | - | 4.43 | 62,392 |
| Easternmost Countries | 0 | - | 4.75 | 62,950 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,654 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,626 |
| Indochina Countries | 0 | - | 4.74 | 66,185 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,627 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,357 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,980 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,093 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,390 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,692 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 63,756 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,948 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,443 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,710 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,587 |
| Flyover Countries | 0 | - | 4.69 | 50,813 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,951 |
