| Landlocked Countries | 0 | - | 4.99 | 414,933 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,023,753 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,116 |
| Himalayan Countries | 0 | - | 4.95 | 135,822 |
| Andean Countries | 0 | - | 4.94 | 83,096 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,420 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,526 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,121 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,776 |
| Danube Countries | 0 | - | 4.97 | 71,218 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,945 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,669 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,773 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,688 |
| European Landlocked Countries | 0 | - | 4.99 | 145,917 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,438 |
| Countries with the Most Species | 0 | - | 4.99 | 95,317 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,582 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,249 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,422 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,036 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,686 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,049 |
| Countries in the Alps | 0 | - | 4.86 | 117,045 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,715 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,507 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,133 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,545 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,332 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,111 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,743 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,866 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,652 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,174 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,255 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,116 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,578 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,852 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,862 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,359 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,761 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,332 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,973 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,023 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,077 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,699 |
| Largest Countries By Category | 0 | - | 4.97 | 156,964 |
| Countries by Countries | 0 | - | 4.96 | 62,402 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,593 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,008 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,369 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,903 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,727,387 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,474 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,583 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,522 |
| Island Countries | 0 | - | 4.99 | 708,132 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,223 |
| Northernmost Countries | 0 | - | 4.99 | 358,477 |
| Countries of South America | 0 | - | 5.00 | 917,085 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,240 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,840 |
| "Land" Countries | 0 | - | 4.98 | 333,997 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,785 |
| Countries with Megacities | 0 | - | 4.99 | 247,940 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,667 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,283 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,049 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,238 |
| Countries by Official Language | 0 | - | 4.95 | 193,056 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,537 |
| Countries in their Native Language | 0 | - | 4.99 | 196,906 |
| Independence from Whom | 0 | - | 4.99 | 210,038 |
| Subdivisions by Country | 0 | - | 4.86 | 50,121 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,989 |
| Megadiverse Countries | 0 | - | 4.97 | 134,014 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,069 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,986 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,498 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,894 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,826 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,095 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,270 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,345 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,275 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,775 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,825 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,485 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,590 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,570 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,763 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,105 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,869 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,987 |
| World Map Quiz | 0 | - | 4.81 | 63,713 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,416 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,511 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,698 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,453 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,190 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,196 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,067 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,271 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,463 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,042 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,499 |
| Widest Countries East to West | 0 | - | 4.92 | 128,990 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,276 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,421 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,633 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,829 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,773 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,187 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,075 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,632 |
| Countries with Double Letters | 0 | - | 4.97 | 93,631 |
| Countries that End in N | 0 | - | 4.94 | 157,094 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,960 |
| Countries with Six Letters | 0 | - | 4.93 | 210,622 |
| Countries with W | 0 | - | 4.97 | 158,388 |
| Countries with Z | 0 | - | 4.98 | 288,167 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,715 |
| Countries That End in U | 0 | - | 4.95 | 119,595 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,828 |
| Countries that End in O | 0 | - | 4.92 | 158,633 |
| Countries that End in R | 0 | - | 4.87 | 118,355 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,917 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,355 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,501 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,615 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,162 |
| Countries That End in Y | 0 | - | 4.90 | 185,272 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,567 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,860 |
| Countries that End in I | 0 | - | 4.94 | 134,521 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,408 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,280 |
| Countries That End in NIA | 0 | - | 4.92 | 109,095 |
| Countries That End in BIA | 0 | - | 4.92 | 147,829 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,216 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,610 |
| Countries That End in RIA | 0 | - | 4.93 | 126,181 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,144 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,623 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,642 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,998 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,519 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,008 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,256 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,766 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,653 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,877 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,300 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,957 |
| Countries that End in L | 0 | - | 4.94 | 156,138 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,931 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,017 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,605 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,421 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,502 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,841 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,576 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,366 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,605 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,964 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,883 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,795 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,229 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,452 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,400 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,310 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,195 |
| One Border Countries | 0 | - | 4.98 | 465,363 |
| Top Producing Countries | 0 | - | 4.63 | 115,969 |
| ISO Country Codes | 0 | - | 4.45 | 82,171 |
| Countries on the Equator | 0 | - | 4.63 | 140,383 |
| Members of the Arab League | 0 | - | 4.77 | 75,497 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,615 |
| Separatist Movements | 0 | - | 4.44 | 45,688 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,694 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,662 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,612 |
| Westernmost Countries | 0 | - | 4.50 | 49,444 |
| Easternmost Countries | 0 | - | 4.75 | 62,706 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,504 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,994 |
| Indochina Countries | 0 | - | 4.74 | 65,975 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,538 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,819 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,892 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,975 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,230 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,458 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,637 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,752 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,050 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,448 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,307 |
| Flyover Countries | 0 | - | 4.67 | 50,599 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,485 |
