| Landlocked Countries | 0 | - | 4.99 | 420,994 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,499,606 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,980 |
| Himalayan Countries | 0 | - | 4.95 | 138,291 |
| Andean Countries | 0 | - | 4.95 | 84,366 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,588 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,498 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,212 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,623 |
| Danube Countries | 0 | - | 4.97 | 71,898 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,864 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,288 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,084 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,557 |
| European Landlocked Countries | 0 | - | 4.99 | 147,026 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,457 |
| Countries with the Most Species | 0 | - | 4.99 | 103,142 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,603 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,533 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,674 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,468 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,150 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,554 |
| Countries in the Alps | 0 | - | 4.87 | 118,035 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,273 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,823 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,578 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,503 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,377 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,871 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,535 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,393 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,111 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,740 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,585 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,443 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,114 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,383 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,410 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,657 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,209 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,722 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,877 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,437 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,809 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,141 |
| Largest Countries By Category | 0 | - | 4.97 | 158,009 |
| Countries by Countries | 0 | - | 4.96 | 63,077 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,530 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,237 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,529 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,563 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,771,101 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,704 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,210 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,584 |
| Island Countries | 0 | - | 4.99 | 710,634 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,528 |
| Northernmost Countries | 0 | - | 4.99 | 361,485 |
| Countries of South America | 0 | - | 5.00 | 925,787 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,008 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,873,599 |
| "Land" Countries | 0 | - | 4.98 | 336,972 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,617 |
| Countries with Megacities | 0 | - | 4.99 | 263,833 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,470 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,326 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,740 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,365 |
| Countries by Official Language | 0 | - | 4.95 | 195,038 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,098 |
| Countries in their Native Language | 0 | - | 4.99 | 198,542 |
| Independence from Whom | 0 | - | 4.99 | 211,847 |
| Subdivisions by Country | 0 | - | 4.86 | 50,385 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,498 |
| Megadiverse Countries | 0 | - | 4.96 | 134,924 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,902 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,285 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,868 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,073 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,982 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,521 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,321 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,970 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,593 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,049 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,453 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,816 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,129 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,907 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,288 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,437 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,014 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,870 |
| World Map Quiz | 0 | - | 4.81 | 64,943 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,684 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,245 |
| Countries by Founding Story | 0 | - | 4.95 | 77,276 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,879 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,154 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,875 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,918 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,792 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,917 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,211 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,386 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,494 |
| Widest Countries East to West | 0 | - | 4.92 | 129,559 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,425 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,245 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,085 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,681 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,468 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,754 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,332 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,777 |
| Countries with Double Letters | 0 | - | 4.97 | 95,913 |
| Countries that End in N | 0 | - | 4.95 | 170,826 |
| Countries with Five Letters | 0 | - | 4.96 | 281,929 |
| Countries with Six Letters | 0 | - | 4.94 | 213,248 |
| Countries with W | 0 | - | 4.97 | 160,099 |
| Countries with Z | 0 | - | 4.98 | 291,102 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,454 |
| Countries That End in U | 0 | - | 4.95 | 120,719 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,231 |
| Countries that End in O | 0 | - | 4.92 | 159,426 |
| Countries that End in R | 0 | - | 4.87 | 118,895 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,660 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,837 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,521 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,361 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,227 |
| Countries That End in Y | 0 | - | 4.91 | 185,802 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,717 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,717 |
| Countries that End in I | 0 | - | 4.94 | 135,026 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,887 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,748 |
| Countries That End in NIA | 0 | - | 4.92 | 109,692 |
| Countries That End in BIA | 0 | - | 4.93 | 149,086 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,970 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,299 |
| Countries That End in RIA | 0 | - | 4.93 | 126,728 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,888 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,282 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,523 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,925 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,500 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,499 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,912 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,409 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,405 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,350 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,138 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,829 |
| Countries that End in L | 0 | - | 4.94 | 156,740 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,124 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,233 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,946 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,881 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,912 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,539 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,500 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,882 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,404 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,216 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,775 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,040 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,665 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,796 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,537 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,528 |
| One Border Countries | 0 | - | 4.98 | 468,900 |
| Top Producing Countries | 0 | - | 4.63 | 116,224 |
| ISO Country Codes | 0 | - | 4.48 | 90,762 |
| Countries on the Equator | 0 | - | 4.63 | 140,772 |
| Members of the Arab League | 0 | - | 4.77 | 75,620 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,876 |
| Separatist Movements | 0 | - | 4.44 | 45,880 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,190 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,809 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,247 |
| Westernmost Countries | 0 | - | 4.42 | 62,330 |
| Easternmost Countries | 0 | - | 4.75 | 62,885 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,638 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,583 |
| Indochina Countries | 0 | - | 4.74 | 66,159 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,621 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,337 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,973 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,087 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,383 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,676 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,876 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,927 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,409 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,684 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,564 |
| Flyover Countries | 0 | - | 4.69 | 50,796 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,900 |
