| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,221 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,570 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,499 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,453 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,074 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,831 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,897,847 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,533 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,941 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 123,807 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.61 | 37,671 |
| Landlocked Countries | 0 | - | 4.99 | 413,349 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,165 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,412 |
| Countries with Glaciers | 0 | - | 4.97 | 104,637 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,609 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,755 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,079 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,052 |
| Coldest Countries | 0 | - | 4.97 | 137,202 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 71,567 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,027 |
| Countries with the Most Nobel Prizes | 0 | - | 4.87 | 89,905 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,338 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,256 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,466 |
| Himalayan Countries | 0 | - | 4.95 | 135,252 |
| Andean Countries | 0 | - | 4.94 | 82,773 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,183 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,125 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,851 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,559 |
| Danube Countries | 0 | - | 4.97 | 71,057 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,719 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,512 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,411 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,335 |
| European Landlocked Countries | 0 | - | 4.99 | 145,722 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,158 |
| Countries with the Most Species | 0 | - | 4.99 | 95,229 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,298 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,192 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,358 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,946 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,554 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,924 |
| Countries in the Alps | 0 | - | 4.86 | 116,777 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,529 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,200 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,989 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,397 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,121 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,975 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,538 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,729 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,147 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,029 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,185 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,026 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,423 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,715 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,728 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,009 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,617 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,240 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,741 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,126 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,553 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,578 |
| Largest Countries By Category | 0 | - | 4.97 | 156,710 |
| Countries by Countries | 0 | - | 4.96 | 62,234 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,335 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,954 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,729 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,532 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,032 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,670 |
| Island Countries | 0 | - | 4.99 | 707,512 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,120 |
| Northernmost Countries | 0 | - | 4.99 | 357,574 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,125 |
| Countries of South America | 0 | - | 5.00 | 914,257 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,875 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,367 |
| "Land" Countries | 0 | - | 4.98 | 333,567 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,564 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,566 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,459 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,122 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,454 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,527 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,619 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,993 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,910 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,687 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,025 |
| Countries with Megacities | 0 | - | 4.99 | 246,587 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,953 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,820 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,390 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,767 |
| Countries by Official Language | 0 | - | 4.95 | 192,714 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,048 |
| Countries in their Native Language | 0 | - | 4.99 | 196,576 |
| Independence from Whom | 0 | - | 4.99 | 209,618 |
| Subdivisions by Country | 0 | - | 4.86 | 50,053 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,696 |
| Megadiverse Countries | 0 | - | 4.97 | 133,869 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,750 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,906 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,409 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,619 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,982 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,874 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,123 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,204 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,734 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,511 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,401 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,477 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,486 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,649 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,008 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,511 |
| World Map Quiz | 0 | - | 4.81 | 63,464 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,295 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,282 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,953 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,911 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,656 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,826 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,031 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,243 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,927 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,316 |
| Widest Countries East to West | 0 | - | 4.92 | 128,581 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,212 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,174 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,555 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,672 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,603 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,017 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,047 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,570 |
| Countries with Double Letters | 0 | - | 4.97 | 93,326 |
| Countries that End in N | 0 | - | 4.94 | 156,428 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,616 |
| Countries with Six Letters | 0 | - | 4.93 | 210,294 |
| Countries with W | 0 | - | 4.97 | 158,186 |
| Countries with Z | 0 | - | 4.98 | 287,800 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,509 |
| Countries That End in U | 0 | - | 4.95 | 119,492 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,485 |
| Countries that End in O | 0 | - | 4.92 | 158,530 |
| Countries that End in R | 0 | - | 4.87 | 118,251 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,848 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,960 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,285 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,462 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,976 |
| Countries That End in Y | 0 | - | 4.90 | 185,184 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,320 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,636 |
| Countries that End in I | 0 | - | 4.94 | 134,385 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,132 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,176 |
| Countries That End in NIA | 0 | - | 4.92 | 108,977 |
| Countries That End in BIA | 0 | - | 4.92 | 147,682 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,028 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,454 |
| Countries That End in RIA | 0 | - | 4.93 | 126,060 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,977 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,127 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,492 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,870 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,329 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,915 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,090 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,619 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,469 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,804 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,776 |
| Countries that End in L | 0 | - | 4.94 | 155,696 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,023 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,977 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,497 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,271 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,407 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,734 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,046 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,891 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,144 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,335 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,491 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,599 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,163 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,413 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,301 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,799,970 |
