| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 65,066 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,662 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,151 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,765 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,878 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,998,950 |
| 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 | 127,159 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 37,984 |
| Landlocked Countries | 0 | - | 4.99 | 427,615 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,699 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,097 |
| 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 | 337,453 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,869 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 171,455 |
| Coldest Countries | 0 | - | 4.97 | 139,860 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.95 | 73,176 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 125,089 |
| Countries with the Most Nobel Prizes | 0 | - | 4.87 | 91,142 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 83,207 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,814,987 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,092 |
| Himalayan Countries | 0 | - | 4.93 | 140,972 |
| Andean Countries | 0 | - | 4.94 | 85,879 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,989 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,602 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,536 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,742 |
| Danube Countries | 0 | - | 4.97 | 72,599 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,857 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,008 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,513 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,987 |
| European Landlocked Countries | 0 | - | 4.99 | 147,810 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,592 |
| Countries with the Most Species | 0 | - | 4.99 | 103,666 |
| 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 | 47,967 |
| 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 | 58,164 |
| Countries in the Alps | 0 | - | 4.87 | 119,034 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,099 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,238 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,087 |
| 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 | 54,029 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,531 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,346 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,972 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,849 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,699 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,952 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,053 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,226 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,764 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,721 |
| 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 | 246,502 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,608 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,636 |
| Largest Countries By Category | 0 | - | 4.97 | 159,154 |
| Countries by Countries | 0 | - | 4.97 | 63,843 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,508 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,457 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,273 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,942 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,143 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,576 |
| Island Countries | 0 | - | 4.99 | 713,152 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,610 |
| Northernmost Countries | 0 | - | 4.99 | 364,786 |
| Countries of South America | 0 | - | 5.00 | 934,793 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,084 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,345 |
| "Land" Countries | 0 | - | 4.98 | 339,146 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,411 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,204 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,296 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,451 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,738 |
| Countries by Oil Consumption | 0 | - | 4.96 | 125,253 |
| Largest Economies in 2050 | 0 | - | 4.88 | 112,109 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,772 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 105,193 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 85,276 |
| Highest Fertility Countries | 0 | - | 4.90 | 27,329 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,619 |
| Countries with Megacities | 0 | - | 4.99 | 268,101 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,267 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,396 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,602 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,504 |
| Countries by Official Language | 0 | - | 4.95 | 196,307 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,057 |
| Countries in their Native Language | 0 | - | 4.99 | 200,019 |
| Independence from Whom | 0 | - | 4.99 | 213,506 |
| Subdivisions by Country | 0 | - | 4.87 | 50,680 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,738 |
| Megadiverse Countries | 0 | - | 4.96 | 149,677 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,202 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,592 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,839 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,270 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,528 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,948 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,364 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,649 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,198 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,297 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,868 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,514 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,526 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,241 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,665 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,002 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,859 |
| World Map Quiz | 0 | - | 4.81 | 65,971 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,113 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,851 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,605 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,281 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,752 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,033 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,604 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,719 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,896 |
| 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 | 130,896 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,457 |
| 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 | 95,186 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,361 |
| 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 | 97,749 |
| Countries that End in N | 0 | - | 4.95 | 172,750 |
| Countries with Five Letters | 0 | - | 4.96 | 284,807 |
| Countries with Six Letters | 0 | - | 4.94 | 215,084 |
| Countries with W | 0 | - | 4.96 | 161,402 |
| Countries with Z | 0 | - | 4.98 | 293,147 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,772 |
| Countries That End in U | 0 | - | 4.95 | 121,447 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,523 |
| Countries that End in O | 0 | - | 4.92 | 160,419 |
| Countries that End in R | 0 | - | 4.87 | 119,311 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,083 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,238 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,456 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,283 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,954 |
| Countries That End in Y | 0 | - | 4.91 | 186,198 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,486 |
| 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 | 185,428 |
| 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 | 167,996 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,940 |
| Countries That End in RIA | 0 | - | 4.93 | 127,190 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,584 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,050 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,446 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,913 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,473 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,947 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,506 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,620 |
| 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 | 117,957 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,671 |
| Countries that End in L | 0 | - | 4.94 | 157,287 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,765 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,390 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,913 |
| 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 | 250,735 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,366 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,561 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,461 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,250 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,353 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,308 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,981 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,890 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,388 |
