| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,750 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,256 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,987 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,660 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,153 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,587,438 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,758 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,838 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 125,914 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,862 |
| Landlocked Countries | 0 | - | 4.99 | 422,037 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,874 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,228 |
| Countries with Glaciers | 0 | - | 4.97 | 105,551 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,682 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,923 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,192 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,353 |
| Coldest Countries | 0 | - | 4.97 | 138,706 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 72,604 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 123,961 |
| Countries with the Most Nobel Prizes | 0 | - | 4.86 | 90,640 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,823 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,779,198 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,491 |
| Himalayan Countries | 0 | - | 4.94 | 138,758 |
| Andean Countries | 0 | - | 4.93 | 84,623 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,825 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,844 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,445 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,818 |
| Danube Countries | 0 | - | 4.97 | 72,018 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,017 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,428 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,324 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,802 |
| European Landlocked Countries | 0 | - | 4.99 | 147,149 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,656 |
| Countries with the Most Species | 0 | - | 4.99 | 103,246 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,777 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,598 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,725 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,545 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,235 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,666 |
| Countries in the Alps | 0 | - | 4.87 | 118,218 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,164 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,047 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,657 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,599 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,520 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,948 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,682 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,497 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,183 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,856 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,662 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,530 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,237 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,479 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,531 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,923 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,315 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,861 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,085 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,969 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,134 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,237 |
| Largest Countries By Category | 0 | - | 4.97 | 158,222 |
| Countries by Countries | 0 | - | 4.96 | 63,233 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,697 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,289 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,679 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,614 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,514 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,310 |
| Island Countries | 0 | - | 4.99 | 711,068 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,942 |
| Northernmost Countries | 0 | - | 4.99 | 361,986 |
| Countries of South America | 0 | - | 5.00 | 927,423 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,024 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,480 |
| "Land" Countries | 0 | - | 4.98 | 337,354 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,907 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,805 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,651 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,637 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,968 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,524 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,597 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,549 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,518 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,711 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,911 |
| Countries with Megacities | 0 | - | 4.99 | 264,595 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,748 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,473 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,012 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,546 |
| Countries by Official Language | 0 | - | 4.95 | 195,263 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,386 |
| Countries in their Native Language | 0 | - | 4.99 | 199,052 |
| Independence from Whom | 0 | - | 4.99 | 212,111 |
| Subdivisions by Country | 0 | - | 4.86 | 50,432 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,740 |
| Megadiverse Countries | 0 | - | 4.96 | 135,016 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,102 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,364 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,238 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,108 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,146 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,601 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,477 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,033 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,662 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,147 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,679 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,885 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,206 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,967 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,352 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,499 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,195 |
| World Map Quiz | 0 | - | 4.81 | 65,094 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,315 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,353 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,106 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,282 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,000 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,204 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,897 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,017 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,305 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,441 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,580 |
| Widest Countries East to West | 0 | - | 4.92 | 129,652 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,459 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,387 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,123 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,769 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,604 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,876 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,375 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,797 |
| Countries with Double Letters | 0 | - | 4.96 | 96,240 |
| Countries that End in N | 0 | - | 4.95 | 171,125 |
| Countries with Five Letters | 0 | - | 4.96 | 282,473 |
| Countries with Six Letters | 0 | - | 4.94 | 213,549 |
| Countries with W | 0 | - | 4.97 | 160,325 |
| Countries with Z | 0 | - | 4.98 | 291,449 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,699 |
| Countries That End in U | 0 | - | 4.95 | 120,853 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,460 |
| Countries that End in O | 0 | - | 4.92 | 159,508 |
| Countries that End in R | 0 | - | 4.87 | 118,968 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,730 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,088 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,693 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,471 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,399 |
| Countries That End in Y | 0 | - | 4.91 | 185,872 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,914 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,855 |
| Countries that End in I | 0 | - | 4.94 | 135,089 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,102 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,822 |
| Countries That End in NIA | 0 | - | 4.92 | 109,786 |
| Countries That End in BIA | 0 | - | 4.93 | 149,199 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,117 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,425 |
| Countries That End in RIA | 0 | - | 4.93 | 126,805 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,019 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,605 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,698 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,117 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,668 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,575 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,026 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,443 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,524 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,419 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,279 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,978 |
| Countries that End in L | 0 | - | 4.94 | 156,839 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,759 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,262 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,021 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,953 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,995 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,745 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,647 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,988 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,538 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,436 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,854 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,099 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,705 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,871 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,834,936 |
| One Border Countries | 0 | - | 4.98 | 469,903 |
