| Landlocked Countries | 0 | - | 4.99 | 419,986 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,421,674 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,471 |
| Himalayan Countries | 0 | - | 4.95 | 137,893 |
| Andean Countries | 0 | - | 4.95 | 84,158 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,375 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,947 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,027 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,477 |
| Danube Countries | 0 | - | 4.97 | 71,771 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,708 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,167 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,861 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,942 |
| European Landlocked Countries | 0 | - | 4.99 | 146,904 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,293 |
| Countries with the Most Species | 0 | - | 4.99 | 103,040 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,444 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,468 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,636 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,400 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,079 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,470 |
| Countries in the Alps | 0 | - | 4.87 | 117,883 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 97,112 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,604 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,505 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,387 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,243 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,801 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,405 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,283 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,042 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,654 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,545 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,387 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,017 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,308 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,310 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,437 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,139 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,643 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,712 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,933 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,526 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,064 |
| Largest Countries By Category | 0 | - | 4.97 | 157,845 |
| Countries by Countries | 0 | - | 4.97 | 62,953 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,383 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,190 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,497 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,450 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,764,295 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,921 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,909 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,949 |
| Island Countries | 0 | - | 4.99 | 710,199 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,303 |
| Northernmost Countries | 0 | - | 4.99 | 361,010 |
| Countries of South America | 0 | - | 5.00 | 924,439 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,276 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,870,324 |
| "Land" Countries | 0 | - | 4.98 | 336,075 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,344 |
| Countries with Megacities | 0 | - | 4.99 | 262,876 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,183 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,159 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,480 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,211 |
| Countries by Official Language | 0 | - | 4.95 | 194,848 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,819 |
| Countries in their Native Language | 0 | - | 4.99 | 198,391 |
| Independence from Whom | 0 | - | 4.99 | 211,606 |
| Subdivisions by Country | 0 | - | 4.86 | 50,339 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,905 |
| Megadiverse Countries | 0 | - | 4.96 | 134,846 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,724 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,235 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,810 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,048 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,852 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,454 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,141 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,907 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,542 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,029 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,259 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,775 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,060 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,842 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,227 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,394 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,378,371 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,523 |
| World Map Quiz | 0 | - | 4.81 | 64,792 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,169 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,153 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,703 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,052 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,773 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,657 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,653 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,793 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,929 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,335 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,397 |
| Widest Countries East to West | 0 | - | 4.92 | 129,459 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,410 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,109 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,042 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,604 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,356 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,661 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,291 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,752 |
| Countries with Double Letters | 0 | - | 4.97 | 95,308 |
| Countries that End in N | 0 | - | 4.95 | 170,333 |
| Countries with Five Letters | 0 | - | 4.96 | 281,145 |
| Countries with Six Letters | 0 | - | 4.94 | 212,749 |
| Countries with W | 0 | - | 4.97 | 159,667 |
| Countries with Z | 0 | - | 4.98 | 290,546 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,932 |
| Countries That End in U | 0 | - | 4.95 | 120,496 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,938 |
| Countries that End in O | 0 | - | 4.92 | 159,269 |
| Countries that End in R | 0 | - | 4.87 | 118,793 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,560 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,547 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,286 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,195 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,793 |
| Countries That End in Y | 0 | - | 4.91 | 185,699 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,474 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,564 |
| Countries that End in I | 0 | - | 4.94 | 134,930 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,670 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,644 |
| Countries That End in NIA | 0 | - | 4.92 | 109,597 |
| Countries That End in BIA | 0 | - | 4.93 | 148,952 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,854 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,177 |
| Countries That End in RIA | 0 | - | 4.93 | 126,613 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,746 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,999 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,373 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,759 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,295 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,396 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,767 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,345 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,255 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,264 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,947 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,676 |
| Countries that End in L | 0 | - | 4.94 | 156,626 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,596 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,179 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,900 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,803 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,858 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,997 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,338 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,761 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,272 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,774 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,669 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,002 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,632 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,743 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,011 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,161 |
| One Border Countries | 0 | - | 4.98 | 468,359 |
| Top Producing Countries | 0 | - | 4.63 | 116,178 |
| ISO Country Codes | 0 | - | 4.45 | 82,404 |
| Countries on the Equator | 0 | - | 4.63 | 140,709 |
| Members of the Arab League | 0 | - | 4.77 | 75,601 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,826 |
| Separatist Movements | 0 | - | 4.44 | 45,858 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,124 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,779 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,205 |
| Westernmost Countries | 0 | - | 4.42 | 62,040 |
| Easternmost Countries | 0 | - | 4.75 | 62,860 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,617 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,496 |
| Indochina Countries | 0 | - | 4.74 | 66,127 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,604 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,294 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,963 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,075 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,358 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,634 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,845 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,891 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,356 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,637 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,521 |
| Flyover Countries | 0 | - | 4.69 | 50,765 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,811 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,495 |
