| Landlocked Countries | 0 | - | 4.99 | 415,389 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,059,914 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,310 |
| Himalayan Countries | 0 | - | 4.95 | 135,985 |
| Andean Countries | 0 | - | 4.94 | 83,173 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,497 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,634 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,186 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,833 |
| Danube Countries | 0 | - | 4.97 | 71,269 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,002 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,714 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,872 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,819 |
| European Landlocked Countries | 0 | - | 4.99 | 145,967 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,524 |
| Countries with the Most Species | 0 | - | 4.99 | 95,348 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,653 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,270 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,441 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,068 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,718 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,076 |
| Countries in the Alps | 0 | - | 4.86 | 117,126 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,762 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,599 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,162 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,592 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,380 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,142 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,803 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,900 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,696 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,208 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,274 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,141 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,621 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,880 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,892 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,464 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,801 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,350 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,036 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,286 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,202 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,733 |
| Largest Countries By Category | 0 | - | 4.97 | 157,032 |
| Countries by Countries | 0 | - | 4.96 | 62,446 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,676 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,027 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,377 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,948 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,731,133 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,852 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,807 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,809 |
| Island Countries | 0 | - | 4.99 | 708,334 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,749 |
| Northernmost Countries | 0 | - | 4.99 | 358,709 |
| Countries of South America | 0 | - | 5.00 | 917,858 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,262 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,442 |
| "Land" Countries | 0 | - | 4.98 | 334,106 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,913 |
| Countries with Megacities | 0 | - | 4.99 | 248,209 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,806 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,359 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,189 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,300 |
| Countries by Official Language | 0 | - | 4.95 | 193,192 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,731 |
| Countries in their Native Language | 0 | - | 4.99 | 197,029 |
| Independence from Whom | 0 | - | 4.99 | 210,168 |
| Subdivisions by Country | 0 | - | 4.86 | 50,150 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,067 |
| Megadiverse Countries | 0 | - | 4.96 | 134,453 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,192 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,014 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,547 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,907 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,883 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,129 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,332 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,451 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,304 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,787 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,930 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,521 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,624 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,585 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,797 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,124 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,148 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,145 |
| World Map Quiz | 0 | - | 4.81 | 63,800 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,661 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,586 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,788 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,523 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,248 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,351 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,115 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,317 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,507 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,080 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,532 |
| Widest Countries East to West | 0 | - | 4.92 | 129,029 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,286 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,490 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,657 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,867 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,834 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,234 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,701 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,643 |
| Countries with Double Letters | 0 | - | 4.96 | 93,700 |
| Countries that End in N | 0 | - | 4.94 | 157,155 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,049 |
| Countries with Six Letters | 0 | - | 4.93 | 210,726 |
| Countries with W | 0 | - | 4.97 | 158,429 |
| Countries with Z | 0 | - | 4.98 | 288,263 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,773 |
| Countries That End in U | 0 | - | 4.95 | 119,620 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,890 |
| Countries that End in O | 0 | - | 4.92 | 158,663 |
| Countries that End in R | 0 | - | 4.87 | 118,380 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,938 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,430 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,570 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,659 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,207 |
| Countries That End in Y | 0 | - | 4.90 | 185,293 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,631 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,908 |
| Countries that End in I | 0 | - | 4.94 | 134,547 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,485 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,305 |
| Countries That End in NIA | 0 | - | 4.92 | 109,127 |
| Countries That End in BIA | 0 | - | 4.92 | 147,859 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,271 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,637 |
| Countries That End in RIA | 0 | - | 4.93 | 126,203 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,189 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,749 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,695 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,044 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,594 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,031 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,289 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,806 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,695 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,902 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,354 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,002 |
| Countries that End in L | 0 | - | 4.94 | 156,164 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,190 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,023 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,629 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,464 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,534 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,004 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,644 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,777 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,665 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,047 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,932 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,822 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,245 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,469 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,426 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,979 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,395 |
| One Border Countries | 0 | - | 4.98 | 465,727 |
| Top Producing Countries | 0 | - | 4.63 | 115,982 |
| ISO Country Codes | 0 | - | 4.45 | 82,217 |
| Countries on the Equator | 0 | - | 4.63 | 140,411 |
| Members of the Arab League | 0 | - | 4.77 | 75,509 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,638 |
| Separatist Movements | 0 | - | 4.44 | 45,706 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,734 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,674 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,007 |
| Westernmost Countries | 0 | - | 4.50 | 49,455 |
| Easternmost Countries | 0 | - | 4.75 | 62,715 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,517 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,037 |
| Indochina Countries | 0 | - | 4.74 | 65,989 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,547 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,840 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,900 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,983 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,241 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,477 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,649 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,767 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,070 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,470 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,320 |
| Flyover Countries | 0 | - | 4.68 | 50,617 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,513 |
