| Landlocked Countries | 0 | - | 4.99 | 418,435 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,306,522 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,729 |
| Himalayan Countries | 0 | - | 4.94 | 137,196 |
| Andean Countries | 0 | - | 4.95 | 83,806 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,054 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,456 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,742 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,275 |
| Danube Countries | 0 | - | 4.97 | 71,603 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,471 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,001 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,555 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,622 |
| European Landlocked Countries | 0 | - | 4.99 | 146,714 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,053 |
| Countries with the Most Species | 0 | - | 4.99 | 102,857 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,190 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,410 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,570 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,272 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,942 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,322 |
| Countries in the Alps | 0 | - | 4.87 | 117,612 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,279 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,378 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,932 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,037 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,410 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,220 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,141 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,936 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,512 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,449 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,312 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,888 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,159 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,176 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,092 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,028 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,545 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,462 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,145 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,117 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,960 |
| Largest Countries By Category | 0 | - | 4.97 | 157,559 |
| Countries by Countries | 0 | - | 4.96 | 62,794 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,141 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,147 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,464 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,281 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,347 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,619 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,486 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,887 |
| Island Countries | 0 | - | 4.99 | 709,578 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,623 |
| Northernmost Countries | 0 | - | 4.99 | 360,279 |
| Countries of South America | 0 | - | 5.00 | 922,401 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,322 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,191 |
| "Land" Countries | 0 | - | 4.98 | 335,699 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,884 |
| Countries with Megacities | 0 | - | 4.99 | 256,603 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,752 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,913 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,049 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,914 |
| Countries by Official Language | 0 | - | 4.95 | 194,570 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,438 |
| Countries in their Native Language | 0 | - | 4.99 | 198,118 |
| Independence from Whom | 0 | - | 4.99 | 211,221 |
| Subdivisions by Country | 0 | - | 4.86 | 50,271 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,631 |
| Megadiverse Countries | 0 | - | 4.96 | 134,741 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,477 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,161 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,727 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,005 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,667 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,353 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,906 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,817 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,467 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,970 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,869 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,690 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,963 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,754 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,117 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,305 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,811 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,075 |
| World Map Quiz | 0 | - | 4.81 | 64,443 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,413 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,991 |
| Countries by Founding Story | 0 | - | 4.95 | 77,030 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,422 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,886 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,595 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,234 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,477 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,644 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,794 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,243 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,251 |
| Widest Countries East to West | 0 | - | 4.92 | 129,331 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,375 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,910 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,982 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,485 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,171 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,508 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,219 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,720 |
| Countries with Double Letters | 0 | - | 4.97 | 95,024 |
| Countries that End in N | 0 | - | 4.95 | 169,852 |
| Countries with Five Letters | 0 | - | 4.96 | 279,714 |
| Countries with Six Letters | 0 | - | 4.94 | 212,398 |
| Countries with W | 0 | - | 4.97 | 159,482 |
| Countries with Z | 0 | - | 4.98 | 289,720 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,673 |
| Countries That End in U | 0 | - | 4.95 | 120,383 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,693 |
| Countries that End in O | 0 | - | 4.92 | 159,174 |
| Countries that End in R | 0 | - | 4.87 | 118,719 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,495 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,248 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,065 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,055 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,641 |
| Countries That End in Y | 0 | - | 4.90 | 185,632 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,178 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,376 |
| Countries that End in I | 0 | - | 4.94 | 134,842 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,028 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,554 |
| Countries That End in NIA | 0 | - | 4.92 | 109,492 |
| Countries That End in BIA | 0 | - | 4.93 | 148,808 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,671 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,017 |
| Countries That End in RIA | 0 | - | 4.93 | 126,507 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,593 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,585 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,169 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,513 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,063 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,293 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,646 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,201 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,083 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,176 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,783 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,493 |
| Countries that End in L | 0 | - | 4.94 | 156,522 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,852 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,146 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,815 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,694 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,744 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,708 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,108 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,575 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,063 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,560 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,552 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,936 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,584 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,639 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,720 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,583 |
| One Border Countries | 0 | - | 4.98 | 467,473 |
| Top Producing Countries | 0 | - | 4.63 | 116,111 |
| ISO Country Codes | 0 | - | 4.45 | 82,342 |
| Countries on the Equator | 0 | - | 4.63 | 140,615 |
| Members of the Arab League | 0 | - | 4.77 | 75,567 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,758 |
| Separatist Movements | 0 | - | 4.44 | 45,794 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,009 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,741 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,133 |
| Westernmost Countries | 0 | - | 4.50 | 49,503 |
| Easternmost Countries | 0 | - | 4.75 | 62,779 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,585 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,367 |
| Indochina Countries | 0 | - | 4.74 | 66,083 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,573 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,230 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,947 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,050 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,312 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,582 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,763 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,851 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,253 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,588 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,448 |
| Flyover Countries | 0 | - | 4.68 | 50,714 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,711 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,447 |
