| Countries by Change in Carbon Dioxide Emissions | 0 | - | 4.92 | 48,410 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,322,799 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 352,167 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 32,509 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,042 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,484,601 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 95,328 |
| Most Forested European Countries | 0 | - | 4.82 | 68,941 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.96 | 163,128 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 105,240 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 35,564 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 331,058 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,026 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 206,872 |
| Countries with Glaciers | 0 | - | 4.97 | 96,837 |
| Countries with the Most Forest | 0 | - | 4.89 | 137,940 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,138,291 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 145,160 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 147,460 |
| Coldest Countries | 0 | - | 4.97 | 125,729 |
| Countries by Airline Passengers | 0 | - | 4.91 | 49,550 |
| Countries with the Most Millionaires | 0 | - | 4.85 | 85,378 |
| Countries with the Most Nobel Prizes | 0 | - | 4.86 | 84,228 |
| Countries with the Least Precipitation | 0 | - | 4.89 | 68,539 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,203,598 |
| Members of the Arab League | 0 | - | 4.85 | 65,034 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,261 |
| Himalayan Countries | 0 | - | 4.94 | 107,237 |
| Andean Countries | 0 | - | 4.91 | 59,652 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,733 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,429 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,806 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,625 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,946 |
| Danube Countries | 0 | - | 4.96 | 57,051 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,070 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,157 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,235 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,077 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,366 |
| European Landlocked Countries | 0 | - | 4.99 | 136,728 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,479 |
| Countries with the Most Species | 0 | - | 4.99 | 89,755 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,977 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,912 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,212 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,798 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,728 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,991 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,650 |
| Countries in the Alps | 0 | - | 4.84 | 103,467 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,089 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,682 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,054 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,120 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,623 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,085 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,247 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,573 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,579 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,174 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,929 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,880 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,910 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,293 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,447 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,022 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,727 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,750 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,836 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 200,265 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,487 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,656 |
| Largest Countries By Category | 0 | - | 4.97 | 145,967 |
| Countries by Countries | 0 | - | 4.96 | 55,288 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,142 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,514 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 360,140 |
| Island Countries Quiz | 0 | - | 4.99 | 665,953 |
| Biggest Countries by Area | 0 | - | 5.00 | 942,446 |
| Northernmost Countries | 0 | - | 4.99 | 329,913 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 392,126 |
| Countries of South America | 0 | - | 5.00 | 804,430 |
| Countries of Oceania | 0 | - | 5.00 | 906,630 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,598,130 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,022 |
| Countries with the Most Billionaires | 0 | - | 4.93 | 283,858 |
| Countries that Catch the Most Fish | 0 | - | 4.88 | 102,121 |
| Countries with the Most Exports | 0 | - | 4.96 | 139,351 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 164,096 |
| Countries by Oil Consumption | 0 | - | 4.96 | 112,229 |
| Largest Economies in 2050 | 0 | - | 4.89 | 100,932 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 241,253 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 90,647 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.85 | 67,483 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 128,019 |
| Countries with Megacities | 0 | - | 4.99 | 200,382 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,891 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,233 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 97,379 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,222 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 251,260 |
| Countries by Official Language | 0 | - | 4.96 | 174,479 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,763 |
| Countries in their Native Language | 0 | - | 4.98 | 179,629 |
| Independence from Whom | 0 | - | 4.99 | 187,986 |
| Subdivisions by Country | 0 | - | 4.82 | 46,750 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,891 |
| Megadiverse Countries | 0 | - | 4.96 | 126,274 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,774 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,267 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,678 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,557 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,616 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,059 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,788 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,474 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,722 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,645 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,031 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,681 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,208 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,119 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,759 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,323 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,897 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,127 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,365 |
| Countries With the Most Languages | 0 | - | 4.91 | 176,293 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,351 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,638 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,714 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,733 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,208 |
| Widest Countries East to West | 0 | - | 4.93 | 120,174 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,030 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,020 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,510 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,079 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,290 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,212 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,874 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,682 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,293 |
| Countries with Double Letters | 0 | - | 4.96 | 70,861 |
| Countries that End in N | 0 | - | 4.94 | 135,083 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 232,432 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,598 |
| Countries with W | 0 | - | 4.96 | 124,916 |
| Countries with Z | 0 | - | 4.98 | 261,855 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,887 |
| Countries That End in U | 0 | - | 4.95 | 108,885 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 91,572 |
| Countries that End in O | 0 | - | 4.92 | 148,252 |
| Countries that End in R | 0 | - | 4.85 | 97,091 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,828 |
| Countries Ending in "IA" | 0 | - | 4.99 | 173,165 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,163 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,302 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,249 |
| Countries That End in Y | 0 | - | 4.90 | 162,147 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,321 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 121,943 |
| Countries that End in I | 0 | - | 4.92 | 114,992 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,854 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,093 |
| Countries That End in NIA | 0 | - | 4.93 | 101,506 |
| Countries That End in BIA | 0 | - | 4.91 | 126,932 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,594 |
| Countries Whose Names Start with Saint | 0 | - | 4.89 | 110,570 |
| Countries That End in RIA | 0 | - | 4.90 | 101,604 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,286 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,413 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,995 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,070 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,653 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,435 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,399 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,883 |
| Countries that End in L | 0 | - | 4.95 | 135,432 |
| "Land" Countries | 0 | - | 4.98 | 291,583 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,715 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 77,454 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,971 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,756 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,264 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 210,131 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 169,332 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,352 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,252 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,541 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,833 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,361 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,962 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,960 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,086 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,099,458 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,444,646 |
| One Border Countries | 0 | - | 4.98 | 413,567 |
| Countries with the Most HIV | 0 | - | 4.50 | 42,960 |
