| Landlocked Countries | 0 | - | 4.99 | 417,773 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,251,014 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,425 |
| Himalayan Countries | 0 | - | 4.94 | 136,935 |
| Andean Countries | 0 | - | 4.95 | 83,687 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,945 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,285 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,608 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,196 |
| Danube Countries | 0 | - | 4.97 | 71,536 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,376 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,950 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,421 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,485 |
| European Landlocked Countries | 0 | - | 4.99 | 146,416 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,963 |
| Countries with the Most Species | 0 | - | 4.99 | 102,648 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,095 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,380 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,551 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,231 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,894 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,277 |
| Countries in the Alps | 0 | - | 4.86 | 117,509 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,011 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,141 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,342 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,858 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,957 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,369 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,132 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,090 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,891 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,440 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,422 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,273 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,829 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,103 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,115 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,958 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,979 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,508 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,374 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,726 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,915 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,913 |
| Largest Countries By Category | 0 | - | 4.97 | 157,457 |
| Countries by Countries | 0 | - | 4.96 | 62,727 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,045 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,123 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,444 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,211 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,749,265 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,977 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,286 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,497 |
| Island Countries | 0 | - | 4.99 | 709,291 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,792 |
| Northernmost Countries | 0 | - | 4.99 | 359,961 |
| Countries of South America | 0 | - | 5.00 | 921,405 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,120 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,862,711 |
| "Land" Countries | 0 | - | 4.98 | 335,473 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,642 |
| Countries with Megacities | 0 | - | 4.99 | 249,694 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,479 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,761 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,817 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,733 |
| Countries by Official Language | 0 | - | 4.95 | 194,422 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,241 |
| Countries in their Native Language | 0 | - | 4.99 | 197,986 |
| Independence from Whom | 0 | - | 4.99 | 211,090 |
| Subdivisions by Country | 0 | - | 4.86 | 50,245 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,532 |
| Megadiverse Countries | 0 | - | 4.96 | 134,684 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,108 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,141 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,692 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,983 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,572 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,302 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,794 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,719 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,440 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,869 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,603 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,651 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,804 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,716 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,982 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,274 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,150 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,882 |
| World Map Quiz | 0 | - | 4.81 | 64,323 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,975 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,897 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,285 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,803 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,527 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,022 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,406 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,582 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,738 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,205 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,195 |
| Widest Countries East to West | 0 | - | 4.92 | 129,257 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,356 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,803 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,964 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,430 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,099 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,454 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,181 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,705 |
| Countries with Double Letters | 0 | - | 4.97 | 94,820 |
| Countries that End in N | 0 | - | 4.95 | 169,327 |
| Countries with Five Letters | 0 | - | 4.96 | 277,360 |
| Countries with Six Letters | 0 | - | 4.94 | 212,160 |
| Countries with W | 0 | - | 4.97 | 159,314 |
| Countries with Z | 0 | - | 4.98 | 289,509 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,520 |
| Countries That End in U | 0 | - | 4.95 | 120,299 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,537 |
| Countries that End in O | 0 | - | 4.92 | 159,113 |
| Countries that End in R | 0 | - | 4.87 | 118,664 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,444 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,110 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,974 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,982 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,567 |
| Countries That End in Y | 0 | - | 4.90 | 185,581 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,064 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,279 |
| Countries that End in I | 0 | - | 4.94 | 134,793 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,902 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,509 |
| Countries That End in NIA | 0 | - | 4.92 | 109,427 |
| Countries That End in BIA | 0 | - | 4.93 | 148,732 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,589 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,943 |
| Countries That End in RIA | 0 | - | 4.93 | 126,443 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,525 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,404 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,065 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,408 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,992 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,251 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,582 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,121 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,022 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,131 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,705 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,390 |
| Countries that End in L | 0 | - | 4.94 | 156,454 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,540 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,131 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,783 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,651 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,702 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,529 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,972 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,492 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,951 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,427 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,285 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,901 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,329 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,566 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,586 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,685 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,317 |
| One Border Countries | 0 | - | 4.98 | 467,085 |
| Top Producing Countries | 0 | - | 4.63 | 116,085 |
| ISO Country Codes | 0 | - | 4.45 | 82,313 |
| Countries on the Equator | 0 | - | 4.63 | 140,581 |
| Members of the Arab League | 0 | - | 4.77 | 75,552 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,728 |
| Separatist Movements | 0 | - | 4.44 | 45,777 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,946 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,718 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,104 |
| Westernmost Countries | 0 | - | 4.50 | 49,492 |
| Easternmost Countries | 0 | - | 4.75 | 62,768 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,567 |
| Top 10 Most Famous Island Countries | 0 | - | 4.68 | 108,283 |
| Indochina Countries | 0 | - | 4.74 | 66,068 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,569 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,205 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,940 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,035 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,303 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,565 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,740 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,835 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,213 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,564 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,425 |
| Flyover Countries | 0 | - | 4.68 | 50,693 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,672 |
