| Landlocked Countries | 0 | - | 4.99 | 413,195 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,882,942 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,394 |
| Himalayan Countries | 0 | - | 4.95 | 135,171 |
| Andean Countries | 0 | - | 4.94 | 82,739 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,155 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,085 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,824 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,522 |
| Danube Countries | 0 | - | 4.97 | 71,035 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,700 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,491 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,372 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,296 |
| European Landlocked Countries | 0 | - | 4.99 | 145,705 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,123 |
| Countries with the Most Species | 0 | - | 4.99 | 95,218 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,271 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,190 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,352 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,931 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,542 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,907 |
| Countries in the Alps | 0 | - | 4.87 | 116,754 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,516 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,165 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,978 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,374 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,102 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,961 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,517 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,720 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,938 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,010 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,179 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,016 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,402 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,706 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,714 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,967 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,598 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,224 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,724 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,029 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,484 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,569 |
| Largest Countries By Category | 0 | - | 4.97 | 156,681 |
| Countries by Countries | 0 | - | 4.96 | 62,216 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,307 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,949 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,311 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,713 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,712,780 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,382 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,981 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,412 |
| Island Countries | 0 | - | 4.99 | 707,419 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,879 |
| Northernmost Countries | 0 | - | 4.99 | 357,471 |
| Countries of South America | 0 | - | 5.00 | 913,989 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,372 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,643 |
| "Land" Countries | 0 | - | 4.98 | 333,520 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,968 |
| Countries with Megacities | 0 | - | 4.99 | 246,458 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,884 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,781 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,347 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,738 |
| Countries by Official Language | 0 | - | 4.95 | 192,676 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,997 |
| Countries in their Native Language | 0 | - | 4.99 | 196,542 |
| Independence from Whom | 0 | - | 4.99 | 209,574 |
| Subdivisions by Country | 0 | - | 4.86 | 50,044 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,658 |
| Megadiverse Countries | 0 | - | 4.97 | 133,855 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,716 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,899 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,399 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,588 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,966 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,702 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,107 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,198 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,729 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,469 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,389 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,461 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,480 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,640 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,999 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,073 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,437 |
| World Map Quiz | 0 | - | 4.81 | 63,430 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,427 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,274 |
| Countries by Founding Story | 0 | - | 4.95 | 76,480 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,241 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,925 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,892 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,602 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,811 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,017 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,220 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,908 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,294 |
| Widest Countries East to West | 0 | - | 4.92 | 128,561 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,205 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,151 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,540 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,657 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,572 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,990 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,043 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,557 |
| Countries with Double Letters | 0 | - | 4.97 | 93,290 |
| Countries that End in N | 0 | - | 4.94 | 156,351 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,578 |
| Countries with Six Letters | 0 | - | 4.93 | 210,265 |
| Countries with W | 0 | - | 4.97 | 158,161 |
| Countries with Z | 0 | - | 4.98 | 287,743 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,480 |
| Countries That End in U | 0 | - | 4.95 | 119,480 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,446 |
| Countries that End in O | 0 | - | 4.92 | 158,507 |
| Countries that End in R | 0 | - | 4.87 | 118,240 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,836 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,930 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,246 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,432 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,799 |
| Countries That End in Y | 0 | - | 4.90 | 185,177 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,273 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,603 |
| Countries that End in I | 0 | - | 4.94 | 134,361 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,102 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,165 |
| Countries That End in NIA | 0 | - | 4.92 | 108,961 |
| Countries That End in BIA | 0 | - | 4.92 | 147,654 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,014 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,441 |
| Countries That End in RIA | 0 | - | 4.93 | 126,047 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,961 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,085 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,477 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,857 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,303 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,903 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,073 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,596 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,449 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,794 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,069 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,748 |
| Countries that End in L | 0 | - | 4.94 | 155,681 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,927 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,974 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,484 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,261 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,396 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,606 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,021 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,874 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,119 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,309 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,472 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,592 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,157 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,405 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,280 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,219 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,416 |
| One Border Countries | 0 | - | 4.98 | 463,981 |
| Top Producing Countries | 0 | - | 4.63 | 115,884 |
| ISO Country Codes | 0 | - | 4.45 | 82,104 |
| Countries on the Equator | 0 | - | 4.63 | 140,273 |
| Members of the Arab League | 0 | - | 4.77 | 75,455 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,549 |
| Separatist Movements | 0 | - | 4.44 | 45,618 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,553 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,628 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,537 |
| Westernmost Countries | 0 | - | 4.50 | 49,414 |
| Easternmost Countries | 0 | - | 4.75 | 62,675 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,451 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,826 |
| Indochina Countries | 0 | - | 4.74 | 65,905 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,517 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,747 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,869 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,950 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,171 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,393 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,558 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,709 |
| Most Populous Countries By Category | 0 | - | 4.55 | 84,958 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,388 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,224 |
| Flyover Countries | 0 | - | 4.64 | 50,536 |
