| Landlocked Countries | 0 | - | 4.99 | 413,209 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,884,426 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,397 |
| Himalayan Countries | 0 | - | 4.95 | 135,178 |
| Andean Countries | 0 | - | 4.94 | 82,741 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,156 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,091 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,824 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,527 |
| Danube Countries | 0 | - | 4.97 | 71,036 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,702 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,494 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,378 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,298 |
| European Landlocked Countries | 0 | - | 4.99 | 145,707 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,125 |
| Countries with the Most Species | 0 | - | 4.99 | 95,220 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,273 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,190 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,352 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,934 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,545 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,908 |
| Countries in the Alps | 0 | - | 4.87 | 116,757 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,516 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,167 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,979 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,378 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,103 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,963 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,517 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,721 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,968 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,014 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,179 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,016 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,406 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,706 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,715 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,970 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,600 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,227 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,726 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,035 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,495 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,570 |
| Largest Countries By Category | 0 | - | 4.97 | 156,683 |
| Countries by Countries | 0 | - | 4.96 | 62,216 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,310 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,949 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,311 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,717 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,712,934 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,401 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,988 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,437 |
| Island Countries | 0 | - | 4.99 | 707,428 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,900 |
| Northernmost Countries | 0 | - | 4.99 | 357,484 |
| Countries of South America | 0 | - | 5.00 | 914,018 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,447 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,707 |
| "Land" Countries | 0 | - | 4.98 | 333,522 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,973 |
| Countries with Megacities | 0 | - | 4.99 | 246,467 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,889 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,785 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,351 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,739 |
| Countries by Official Language | 0 | - | 4.95 | 192,679 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,002 |
| Countries in their Native Language | 0 | - | 4.99 | 196,546 |
| Independence from Whom | 0 | - | 4.99 | 209,578 |
| Subdivisions by Country | 0 | - | 4.86 | 50,045 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,661 |
| Megadiverse Countries | 0 | - | 4.97 | 133,858 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,721 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,899 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,399 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,589 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,966 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,772 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,110 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,198 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,729 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,476 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,390 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,462 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,482 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,641 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,000 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,149 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,445 |
| World Map Quiz | 0 | - | 4.81 | 63,433 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,437 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,276 |
| Countries by Founding Story | 0 | - | 4.95 | 76,484 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,248 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,927 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,897 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,608 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,816 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,019 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,224 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,909 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,297 |
| Widest Countries East to West | 0 | - | 4.92 | 128,561 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,206 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,153 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,541 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,659 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,577 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,995 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,045 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,557 |
| Countries with Double Letters | 0 | - | 4.97 | 93,295 |
| Countries that End in N | 0 | - | 4.94 | 156,353 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,580 |
| Countries with Six Letters | 0 | - | 4.93 | 210,268 |
| Countries with W | 0 | - | 4.97 | 158,166 |
| Countries with Z | 0 | - | 4.98 | 287,751 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,483 |
| Countries That End in U | 0 | - | 4.95 | 119,482 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,450 |
| Countries that End in O | 0 | - | 4.92 | 158,507 |
| Countries that End in R | 0 | - | 4.87 | 118,240 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,838 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,932 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,248 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,435 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,813 |
| Countries That End in Y | 0 | - | 4.90 | 185,178 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,275 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,603 |
| Countries that End in I | 0 | - | 4.94 | 134,363 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,104 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,168 |
| Countries That End in NIA | 0 | - | 4.92 | 108,961 |
| Countries That End in BIA | 0 | - | 4.92 | 147,657 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,014 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,442 |
| Countries That End in RIA | 0 | - | 4.93 | 126,048 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,963 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,090 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,481 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,857 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,307 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,904 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,074 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,597 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,451 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,794 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,072 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,753 |
| Countries that End in L | 0 | - | 4.94 | 155,681 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,937 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,975 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,486 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,262 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,396 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,617 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,024 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,876 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,122 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,313 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,474 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,592 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,157 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,406 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,283 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,249 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,424 |
| One Border Countries | 0 | - | 4.98 | 464,006 |
| Top Producing Countries | 0 | - | 4.63 | 115,884 |
| ISO Country Codes | 0 | - | 4.45 | 82,105 |
| Countries on the Equator | 0 | - | 4.63 | 140,274 |
| Members of the Arab League | 0 | - | 4.77 | 75,455 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,549 |
| Separatist Movements | 0 | - | 4.44 | 45,618 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,554 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,628 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,537 |
| Westernmost Countries | 0 | - | 4.50 | 49,414 |
| Easternmost Countries | 0 | - | 4.75 | 62,675 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,452 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,827 |
| Indochina Countries | 0 | - | 4.74 | 65,907 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,517 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,749 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,869 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,950 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,171 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,393 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,561 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,711 |
| Most Populous Countries By Category | 0 | - | 4.55 | 84,959 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,389 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,226 |
| Flyover Countries | 0 | - | 4.64 | 50,536 |
