| Landlocked Countries | 0 | - | 4.99 | 421,920 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,578,717 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,408 |
| Himalayan Countries | 0 | - | 4.94 | 138,692 |
| Andean Countries | 0 | - | 4.93 | 84,592 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,787 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,796 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,410 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,797 |
| Danube Countries | 0 | - | 4.97 | 72,001 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,008 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,420 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,292 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,772 |
| European Landlocked Countries | 0 | - | 4.99 | 147,138 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,629 |
| Countries with the Most Species | 0 | - | 4.99 | 103,240 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,753 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,590 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,721 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,539 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,222 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,656 |
| Countries in the Alps | 0 | - | 4.87 | 118,196 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,081 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,025 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,639 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,593 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,504 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,945 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,669 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,487 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,176 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,840 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,650 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,521 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,218 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,463 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,515 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,893 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,304 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,716 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,064 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,903 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,084 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,224 |
| Largest Countries By Category | 0 | - | 4.97 | 158,200 |
| Countries by Countries | 0 | - | 4.96 | 63,219 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,676 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,284 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,565 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,673 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,256 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,538 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,486 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,178 |
| Island Countries | 0 | - | 4.99 | 711,027 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,799 |
| Northernmost Countries | 0 | - | 4.99 | 361,941 |
| Countries of South America | 0 | - | 5.00 | 927,272 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,761 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,109 |
| "Land" Countries | 0 | - | 4.98 | 337,319 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,873 |
| Countries with Megacities | 0 | - | 4.99 | 264,513 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,727 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,460 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,984 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,534 |
| Countries by Official Language | 0 | - | 4.95 | 195,235 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,360 |
| Countries in their Native Language | 0 | - | 4.99 | 199,032 |
| Independence from Whom | 0 | - | 4.99 | 212,075 |
| Subdivisions by Country | 0 | - | 4.86 | 50,430 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,718 |
| Megadiverse Countries | 0 | - | 4.96 | 135,006 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,075 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,346 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,233 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,097 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,133 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,593 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,460 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,030 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,652 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,145 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,660 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,877 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,199 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,961 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,344 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,494 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,563 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,166 |
| World Map Quiz | 0 | - | 4.81 | 65,077 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,261 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,344 |
| Countries by Founding Story | 0 | - | 4.95 | 77,361 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,083 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,272 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,992 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,174 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,881 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,004 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,295 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,435 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,567 |
| Widest Countries East to West | 0 | - | 4.92 | 129,634 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,451 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,367 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,117 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,764 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,593 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,864 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,371 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,796 |
| Countries with Double Letters | 0 | - | 4.96 | 96,221 |
| Countries that End in N | 0 | - | 4.95 | 171,096 |
| Countries with Five Letters | 0 | - | 4.96 | 282,415 |
| Countries with Six Letters | 0 | - | 4.94 | 213,523 |
| Countries with W | 0 | - | 4.97 | 160,310 |
| Countries with Z | 0 | - | 4.98 | 291,422 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,681 |
| Countries That End in U | 0 | - | 4.95 | 120,844 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,444 |
| Countries that End in O | 0 | - | 4.92 | 159,503 |
| Countries that End in R | 0 | - | 4.87 | 118,962 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,724 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,064 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,683 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,465 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,386 |
| Countries That End in Y | 0 | - | 4.91 | 185,865 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,899 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,842 |
| Countries that End in I | 0 | - | 4.94 | 135,085 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,083 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,816 |
| Countries That End in NIA | 0 | - | 4.92 | 109,778 |
| Countries That End in BIA | 0 | - | 4.93 | 149,187 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,110 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,415 |
| Countries That End in RIA | 0 | - | 4.93 | 126,800 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,010 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,570 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,684 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,095 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,659 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,567 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,010 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,439 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,514 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,407 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,269 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,969 |
| Countries that End in L | 0 | - | 4.94 | 156,831 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,691 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,260 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,012 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,944 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,989 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,726 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,632 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,981 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,523 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,415 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,849 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,095 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,703 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,867 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,097 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,956 |
| One Border Countries | 0 | - | 4.98 | 469,849 |
| Top Producing Countries | 0 | - | 4.63 | 116,260 |
| ISO Country Codes | 0 | - | 4.48 | 91,255 |
| Countries on the Equator | 0 | - | 4.63 | 140,828 |
| Members of the Arab League | 0 | - | 4.77 | 75,642 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,911 |
| Separatist Movements | 0 | - | 4.45 | 45,910 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,280 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,831 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,283 |
| Westernmost Countries | 0 | - | 4.43 | 62,416 |
| Easternmost Countries | 0 | - | 4.75 | 62,974 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,664 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,672 |
| Indochina Countries | 0 | - | 4.74 | 66,206 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,643 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,367 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,982 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,102 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,404 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,708 |
| Countries that are the Source of Refugees | 0 | - | 4.72 | 65,154 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,959 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,465 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,724 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,606 |
| Flyover Countries | 0 | - | 4.69 | 50,833 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,998 |
