| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 65,066 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,689 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,159 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,765 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,880 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,999,960 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 110,056 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,344 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 127,161 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 37,984 |
| Landlocked Countries | 0 | - | 4.99 | 427,622 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,705 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,099 |
| Countries with Glaciers | 0 | - | 4.97 | 105,915 |
| Countries with the Most Forest | 0 | - | 4.88 | 148,326 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,457 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,871 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 171,456 |
| Coldest Countries | 0 | - | 4.97 | 139,879 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.95 | 73,177 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 125,092 |
| Countries with the Most Nobel Prizes | 0 | - | 4.87 | 91,144 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 83,213 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,060 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,098 |
| Himalayan Countries | 0 | - | 4.93 | 140,981 |
| Andean Countries | 0 | - | 4.94 | 85,884 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,991 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,605 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,536 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,745 |
| Danube Countries | 0 | - | 4.97 | 72,602 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,861 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,008 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,516 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,987 |
| European Landlocked Countries | 0 | - | 4.99 | 147,811 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,593 |
| Countries with the Most Species | 0 | - | 4.99 | 103,667 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,694 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,827 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,968 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,949 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,702 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,166 |
| Countries in the Alps | 0 | - | 4.87 | 119,035 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,102 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,240 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,089 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,212 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,179 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,419 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,633 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,030 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,532 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,346 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,973 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,849 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,700 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,954 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,056 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,231 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,765 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,728 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,884 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,516 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,611 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,636 |
| Largest Countries By Category | 0 | - | 4.97 | 159,155 |
| Countries by Countries | 0 | - | 4.97 | 63,844 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,510 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,457 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,274 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,955 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,143 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,588 |
| Island Countries | 0 | - | 4.99 | 713,156 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,629 |
| Northernmost Countries | 0 | - | 4.99 | 364,788 |
| Countries of South America | 0 | - | 5.00 | 934,800 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,132 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,381 |
| "Land" Countries | 0 | - | 4.98 | 339,148 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,412 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,233 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,297 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,452 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,742 |
| Countries by Oil Consumption | 0 | - | 4.96 | 125,261 |
| Largest Economies in 2050 | 0 | - | 4.88 | 112,109 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,777 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 105,197 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 85,278 |
| Highest Fertility Countries | 0 | - | 4.90 | 27,331 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,621 |
| Countries with Megacities | 0 | - | 4.99 | 268,112 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,272 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,397 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,606 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,507 |
| Countries by Official Language | 0 | - | 4.95 | 196,311 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,061 |
| Countries in their Native Language | 0 | - | 4.99 | 200,022 |
| Independence from Whom | 0 | - | 4.99 | 213,513 |
| Subdivisions by Country | 0 | - | 4.87 | 50,681 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,742 |
| Megadiverse Countries | 0 | - | 4.96 | 149,692 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,203 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,593 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,839 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,271 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,531 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,949 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,368 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,649 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,199 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,297 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,870 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,515 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,527 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,241 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,666 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,004 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,861 |
| World Map Quiz | 0 | - | 4.81 | 65,973 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,121 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,852 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,608 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,283 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,753 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,035 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,608 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,720 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,897 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,783 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,004 |
| Widest Countries East to West | 0 | - | 4.92 | 130,898 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,459 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,583 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,189 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,388 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,646 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,933 |
| Countries with Double Letters | 0 | - | 4.96 | 97,750 |
| Countries that End in N | 0 | - | 4.95 | 172,754 |
| Countries with Five Letters | 0 | - | 4.96 | 284,810 |
| Countries with Six Letters | 0 | - | 4.94 | 215,086 |
| Countries with W | 0 | - | 4.96 | 161,407 |
| Countries with Z | 0 | - | 4.98 | 293,148 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,777 |
| Countries That End in U | 0 | - | 4.95 | 121,448 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,530 |
| Countries that End in O | 0 | - | 4.92 | 160,420 |
| Countries that End in R | 0 | - | 4.87 | 119,311 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,084 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,241 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,486 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,289 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,957 |
| Countries That End in Y | 0 | - | 4.91 | 186,198 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,491 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,471 |
| Countries that End in I | 0 | - | 4.94 | 135,458 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,432 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,176 |
| Countries That End in NIA | 0 | - | 4.92 | 110,189 |
| Countries That End in BIA | 0 | - | 4.93 | 149,785 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,998 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,940 |
| Countries That End in RIA | 0 | - | 4.93 | 127,192 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,586 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,054 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,446 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,915 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,475 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,949 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,508 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,621 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,103 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,760 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,958 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,671 |
| Countries that End in L | 0 | - | 4.94 | 157,288 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,776 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,390 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,914 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,180 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,566 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,738 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,372 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,562 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,464 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,251 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,354 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,308 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,982 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,891 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,388 |
