| Landlocked Countries | 0 | - | 4.99 | 414,421 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,986,394 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,930 |
| Himalayan Countries | 0 | - | 4.95 | 135,639 |
| Andean Countries | 0 | - | 4.94 | 82,989 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,345 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,397 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,045 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,716 |
| Danube Countries | 0 | - | 4.97 | 71,159 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,872 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,621 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,658 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,561 |
| European Landlocked Countries | 0 | - | 4.99 | 145,861 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,330 |
| Countries with the Most Species | 0 | - | 4.99 | 95,289 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,479 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,228 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,396 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,006 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,644 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,011 |
| Countries in the Alps | 0 | - | 4.86 | 116,954 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,659 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,422 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,082 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,491 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,269 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,073 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,672 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,825 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,563 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,130 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,225 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,089 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,518 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,812 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,816 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,239 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,724 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,302 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,877 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,739 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,935 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,674 |
| Largest Countries By Category | 0 | - | 4.97 | 156,890 |
| Countries by Countries | 0 | - | 4.96 | 62,341 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,528 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,994 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,354 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,843 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,723,383 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,946 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,420 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,233 |
| Island Countries | 0 | - | 4.99 | 707,925 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,562 |
| Northernmost Countries | 0 | - | 4.99 | 358,157 |
| Countries of South America | 0 | - | 5.00 | 916,165 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,285 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,173 |
| "Land" Countries | 0 | - | 4.98 | 333,868 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,642 |
| Countries with Megacities | 0 | - | 4.99 | 247,612 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,488 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,212 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,896 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,140 |
| Countries by Official Language | 0 | - | 4.95 | 192,948 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,371 |
| Countries in their Native Language | 0 | - | 4.99 | 196,799 |
| Independence from Whom | 0 | - | 4.99 | 209,905 |
| Subdivisions by Country | 0 | - | 4.86 | 50,104 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,900 |
| Megadiverse Countries | 0 | - | 4.97 | 133,965 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,959 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,957 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,468 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,877 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,768 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,056 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,190 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,222 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,253 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,761 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,742 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,456 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,557 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,541 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,731 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,064 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,607 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,822 |
| World Map Quiz | 0 | - | 4.81 | 63,658 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,148 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,416 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,566 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,351 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,081 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,022 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,997 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,180 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,384 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,006 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,430 |
| Widest Countries East to West | 0 | - | 4.92 | 128,934 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,252 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,339 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,606 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,757 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,704 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,136 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 73,082 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,618 |
| Countries with Double Letters | 0 | - | 4.96 | 93,549 |
| Countries that End in N | 0 | - | 4.94 | 157,033 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,855 |
| Countries with Six Letters | 0 | - | 4.93 | 210,529 |
| Countries with W | 0 | - | 4.97 | 158,333 |
| Countries with Z | 0 | - | 4.98 | 288,060 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,653 |
| Countries That End in U | 0 | - | 4.95 | 119,579 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,734 |
| Countries that End in O | 0 | - | 4.92 | 158,611 |
| Countries that End in R | 0 | - | 4.87 | 118,327 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,895 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,262 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,451 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,571 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,117 |
| Countries That End in Y | 0 | - | 4.90 | 185,250 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,497 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,797 |
| Countries that End in I | 0 | - | 4.94 | 134,487 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,332 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,249 |
| Countries That End in NIA | 0 | - | 4.92 | 109,066 |
| Countries That End in BIA | 0 | - | 4.92 | 147,779 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,162 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,570 |
| Countries That End in RIA | 0 | - | 4.93 | 126,142 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,099 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,506 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,599 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,968 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,455 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,970 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,199 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,721 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,591 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,852 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,234 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,905 |
| Countries that End in L | 0 | - | 4.94 | 156,094 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,672 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,005 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,564 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,363 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,473 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,637 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,448 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 139,613 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,492 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,841 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,804 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,758 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,208 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,439 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,372 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,429 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,981 |
| One Border Countries | 0 | - | 4.98 | 464,957 |
| Top Producing Countries | 0 | - | 4.63 | 115,951 |
| ISO Country Codes | 0 | - | 4.45 | 82,155 |
| Countries on the Equator | 0 | - | 4.63 | 140,355 |
| Members of the Arab League | 0 | - | 4.77 | 75,488 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,595 |
| Separatist Movements | 0 | - | 4.44 | 45,660 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,657 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,645 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,589 |
| Westernmost Countries | 0 | - | 4.50 | 49,436 |
| Easternmost Countries | 0 | - | 4.75 | 62,693 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,485 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,943 |
| Indochina Countries | 0 | - | 4.74 | 65,957 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,531 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,798 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,887 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,966 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,214 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,443 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,619 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,739 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,028 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,430 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,290 |
| Flyover Countries | 0 | - | 4.67 | 50,581 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,455 |
