| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 110,047 |
| Countries with Glaciers | 0 | - | 4.97 | 105,865 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 65,021 |
| Least-Forested Countries | 0 | - | 4.53 | 65,450 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,392 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,947,613 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,815 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 37,972 |
| Landlocked Countries | 0 | - | 4.99 | 426,969 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,937 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,374 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,783 |
| Himalayan Countries | 0 | - | 4.93 | 140,702 |
| Andean Countries | 0 | - | 4.94 | 85,738 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,865 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,408 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,419 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,644 |
| Danube Countries | 0 | - | 4.97 | 72,519 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,745 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,942 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,383 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,836 |
| European Landlocked Countries | 0 | - | 4.99 | 147,707 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,486 |
| Countries with the Most Species | 0 | - | 4.99 | 103,628 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,585 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,803 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,939 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,904 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,659 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,106 |
| Countries in the Alps | 0 | - | 4.87 | 118,928 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,919 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,066 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,040 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,142 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,093 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,362 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,545 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,972 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,497 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,288 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,939 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,817 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,653 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,901 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,997 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,088 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,700 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,197 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,804 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,174 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,410 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,593 |
| Largest Countries By Category | 0 | - | 4.97 | 159,036 |
| Countries by Countries | 0 | - | 4.97 | 63,783 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,390 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,440 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,699 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,514 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,198 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,327 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,974 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,183 |
| Island Countries | 0 | - | 4.99 | 712,891 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,825 |
| Northernmost Countries | 0 | - | 4.99 | 364,463 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,751 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,906 |
| Countries of South America | 0 | - | 5.00 | 933,873 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,922 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,054 |
| "Land" Countries | 0 | - | 4.98 | 338,875 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,199 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,211 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,425 |
| Countries with Megacities | 0 | - | 4.99 | 267,679 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,072 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,288 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,414 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,399 |
| Countries by Official Language | 0 | - | 4.95 | 196,165 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,866 |
| Countries in their Native Language | 0 | - | 4.99 | 199,910 |
| Independence from Whom | 0 | - | 4.99 | 213,335 |
| Subdivisions by Country | 0 | - | 4.87 | 50,653 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,617 |
| Megadiverse Countries | 0 | - | 4.96 | 148,087 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,085 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,569 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,777 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,248 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,419 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,911 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,244 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,607 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,144 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,708 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,464 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,488 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,199 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,619 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,944 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,646 |
| World Map Quiz | 0 | - | 4.81 | 65,882 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,737 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,779 |
| Countries by Founding Story | 0 | - | 4.95 | 77,892 |
| Countries by Road Signs | 0 | - | 4.98 | 54,424 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,444 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,200 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,669 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,846 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,527 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,632 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,828 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,750 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,908 |
| Widest Countries East to West | 0 | - | 4.92 | 130,809 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,624 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,357 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,547 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,131 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,073 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,586 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,526 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,916 |
| Countries with Double Letters | 0 | - | 4.96 | 97,521 |
| Countries that End in N | 0 | - | 4.95 | 172,546 |
| Countries with Five Letters | 0 | - | 4.96 | 284,517 |
| Countries with Six Letters | 0 | - | 4.94 | 214,867 |
| Countries with W | 0 | - | 4.96 | 161,248 |
| Countries with Z | 0 | - | 4.98 | 292,896 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,607 |
| Countries That End in U | 0 | - | 4.95 | 121,355 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,362 |
| Countries that End in O | 0 | - | 4.92 | 160,346 |
| Countries that End in R | 0 | - | 4.87 | 119,260 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,041 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,086 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 184,220 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,120 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,606 |
| Countries That End in Y | 0 | - | 4.91 | 186,157 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,126 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,383 |
| Countries that End in I | 0 | - | 4.94 | 135,400 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,158 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,123 |
| Countries That End in NIA | 0 | - | 4.92 | 110,139 |
| Countries That End in BIA | 0 | - | 4.93 | 149,700 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,898 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,870 |
| Countries That End in RIA | 0 | - | 4.93 | 127,122 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,514 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,874 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,338 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,801 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,353 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,896 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,421 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,585 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,021 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,716 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,869 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,563 |
| Countries that End in L | 0 | - | 4.94 | 157,221 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,440 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,372 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,858 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,141 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,525 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,607 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,271 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,506 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,387 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,148 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,301 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,286 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,965 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,870 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,335 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,593 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,854 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,204 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,851,949 |
| One Border Countries | 0 | - | 4.98 | 472,415 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,658,086 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,549 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,596 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,741 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,431 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,458 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,786 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,972 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,332 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,694 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,223 |
