| Countries by Change in Carbon Dioxide Emissions | 0 | - | 4.92 | 48,540 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,328,439 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,268 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 32,631 |
| Worst Plastic Polluting Countries | 0 | - | 4.55 | 61,116 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,542 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,746,305 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 95,439 |
| Most Forested European Countries | 0 | - | 4.82 | 69,284 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.96 | 163,489 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 106,046 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 35,690 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 334,199 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,758 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,737 |
| Countries with Glaciers | 0 | - | 4.97 | 97,409 |
| Countries with the Most Forest | 0 | - | 4.89 | 138,594 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,169,556 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,634 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,311 |
| Coldest Countries | 0 | - | 4.97 | 126,279 |
| Countries by Airline Passengers | 0 | - | 4.91 | 49,755 |
| Countries with the Most Millionaires | 0 | - | 4.85 | 86,189 |
| Countries with the Most Nobel Prizes | 0 | - | 4.86 | 84,528 |
| Countries with the Least Precipitation | 0 | - | 4.89 | 68,774 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,227,281 |
| Members of the Arab League | 0 | - | 4.86 | 66,239 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,447 |
| Himalayan Countries | 0 | - | 4.94 | 108,388 |
| Andean Countries | 0 | - | 4.91 | 60,169 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,358 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,833 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,444 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,840 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,255 |
| Danube Countries | 0 | - | 4.96 | 57,225 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,234 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,293 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,694 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,396 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,008 |
| European Landlocked Countries | 0 | - | 4.99 | 137,039 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,804 |
| Countries with the Most Species | 0 | - | 4.99 | 89,855 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,335 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,020 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,314 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,057 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,881 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,118 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,918 |
| Countries in the Alps | 0 | - | 4.84 | 103,848 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,429 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,496 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,276 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,373 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,897 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,336 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,545 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,773 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,691 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,409 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,170 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,029 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,029 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,579 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,665 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,238 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,544 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,958 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,033 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 202,474 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,367 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,829 |
| Largest Countries By Category | 0 | - | 4.97 | 146,425 |
| Countries by Countries | 0 | - | 4.95 | 55,595 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,611 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 344,968 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 362,526 |
| Island Countries Quiz | 0 | - | 4.99 | 668,503 |
| Biggest Countries by Area | 0 | - | 5.00 | 947,197 |
| Northernmost Countries | 0 | - | 4.99 | 330,860 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 393,045 |
| Countries of South America | 0 | - | 5.00 | 809,637 |
| Countries of Oceania | 0 | - | 5.00 | 913,265 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,610,555 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,508 |
| Countries with the Most Billionaires | 0 | - | 4.93 | 285,118 |
| Countries that Catch the Most Fish | 0 | - | 4.88 | 102,754 |
| Countries with the Most Exports | 0 | - | 4.96 | 140,487 |
| Top Crude Oil Producing Countries | 0 | - | 4.90 | 174,301 |
| Countries by Oil Consumption | 0 | - | 4.96 | 112,685 |
| Largest Economies in 2050 | 0 | - | 4.89 | 101,447 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 242,190 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 91,503 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.86 | 68,026 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 128,977 |
| Countries with Megacities | 0 | - | 4.99 | 201,759 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,295 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,925 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,195 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,823 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 252,912 |
| Countries by Official Language | 0 | - | 4.96 | 175,195 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,144 |
| Countries in their Native Language | 0 | - | 4.98 | 180,511 |
| Independence from Whom | 0 | - | 4.99 | 189,306 |
| Subdivisions by Country | 0 | - | 4.84 | 46,885 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,592 |
| Megadiverse Countries | 0 | - | 4.96 | 126,778 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 93,859 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,571 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,804 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,302 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,879 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,604 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,022 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,701 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,846 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,045 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,247 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,926 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,454 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,391 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,008 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,695 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,682 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,781 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 109,922 |
| Countries With the Most Languages | 0 | - | 4.90 | 177,634 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,668 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,031 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 88,240 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 55,061 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,538 |
| Widest Countries East to West | 0 | - | 4.93 | 120,516 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,114 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,502 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,811 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,399 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,614 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,619 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,451 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,792 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,403 |
| Countries with Double Letters | 0 | - | 4.96 | 71,754 |
| Countries that End in N | 0 | - | 4.94 | 135,921 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 233,772 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 190,470 |
| Countries with W | 0 | - | 4.96 | 125,603 |
| Countries with Z | 0 | - | 4.98 | 264,564 |
| Countries with Letters Missing | 0 | - | 4.97 | 169,646 |
| Countries That End in U | 0 | - | 4.95 | 109,312 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,316 |
| Countries that End in O | 0 | - | 4.92 | 148,619 |
| Countries that End in R | 0 | - | 4.85 | 97,293 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,072 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,089 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,662 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,667 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,603 |
| Countries That End in Y | 0 | - | 4.90 | 162,389 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,934 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,343 |
| Countries that End in I | 0 | - | 4.92 | 115,192 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,592 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,365 |
| Countries That End in NIA | 0 | - | 4.92 | 101,788 |
| Countries That End in BIA | 0 | - | 4.91 | 127,263 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,105 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 110,939 |
| Countries That End in RIA | 0 | - | 4.90 | 101,867 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,711 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 204,478 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,566 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,690 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,239 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,874 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,804 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,663 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,455 |
| Countries that End in L | 0 | - | 4.95 | 135,811 |
| "Land" Countries | 0 | - | 4.98 | 292,247 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,231 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,866 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,323 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,042 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,583 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,016 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 170,866 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,771 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,871 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,336 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,530 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,604 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,283 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,248 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,354 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,115,916 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,467,760 |
