| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,823 |
| Countries with Glaciers | 0 | - | 4.97 | 105,745 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,909 |
| Least-Forested Countries | 0 | - | 4.53 | 65,392 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,307 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,814,461 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,766 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 37,934 |
| Landlocked Countries | 0 | - | 4.99 | 424,881 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,859 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,786 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,819 |
| Himalayan Countries | 0 | - | 4.93 | 139,903 |
| Andean Countries | 0 | - | 4.94 | 85,254 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,422 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,757 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,988 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,293 |
| Danube Countries | 0 | - | 4.97 | 72,300 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,457 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,744 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,927 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,428 |
| European Landlocked Countries | 0 | - | 4.99 | 147,501 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,148 |
| Countries with the Most Species | 0 | - | 4.99 | 103,509 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,290 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,725 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,838 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,774 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,508 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,938 |
| Countries in the Alps | 0 | - | 4.87 | 118,653 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,427 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,684 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,905 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,933 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,859 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,170 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,295 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,796 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,360 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,098 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,809 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,684 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,481 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,714 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,809 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,604 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,547 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,638 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,536 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,360 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,930 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,458 |
| Largest Countries By Category | 0 | - | 4.97 | 158,728 |
| Countries by Countries | 0 | - | 4.96 | 63,548 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,155 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,375 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,651 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,020 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,770 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,434 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,220 |
| Island Countries | 0 | - | 4.99 | 712,235 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,747 |
| Northernmost Countries | 0 | - | 4.99 | 363,608 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,717 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,793 |
| Countries of South America | 0 | - | 5.00 | 931,472 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,847 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,539 |
| "Land" Countries | 0 | - | 4.98 | 338,185 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,187 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,720 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,930 |
| Countries with Megacities | 0 | - | 4.99 | 266,669 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,635 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,990 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,939 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,100 |
| Countries by Official Language | 0 | - | 4.95 | 195,848 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,424 |
| Countries in their Native Language | 0 | - | 4.99 | 199,620 |
| Independence from Whom | 0 | - | 4.99 | 212,875 |
| Subdivisions by Country | 0 | - | 4.87 | 50,581 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,303 |
| Megadiverse Countries | 0 | - | 4.96 | 135,220 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,832 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,499 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,406 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,200 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,497 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,791 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,001 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,526 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,789 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,233 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,334 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,332 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,401 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,115 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,543 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,657 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,137 |
| World Map Quiz | 0 | - | 4.81 | 65,563 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,839 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,626 |
| Countries by Founding Story | 0 | - | 4.95 | 77,726 |
| Countries by Road Signs | 0 | - | 4.98 | 54,289 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,078 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,987 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,471 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,351 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,327 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,452 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,655 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,640 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,432 |
| Widest Countries East to West | 0 | - | 4.92 | 130,368 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,159 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,484 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,003 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,900 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,398 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,475 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,874 |
| Countries with Double Letters | 0 | - | 4.96 | 96,902 |
| Countries that End in N | 0 | - | 4.94 | 171,783 |
| Countries with Five Letters | 0 | - | 4.96 | 283,537 |
| Countries with Six Letters | 0 | - | 4.94 | 214,258 |
| Countries with W | 0 | - | 4.96 | 160,819 |
| Countries with Z | 0 | - | 4.98 | 292,248 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,174 |
| Countries That End in U | 0 | - | 4.95 | 121,112 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,980 |
| Countries that End in O | 0 | - | 4.92 | 159,764 |
| Countries that End in R | 0 | - | 4.87 | 119,132 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,889 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,690 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,057 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,757 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,687 |
| Countries That End in Y | 0 | - | 4.91 | 186,047 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,353 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,184 |
| Countries that End in I | 0 | - | 4.94 | 135,267 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,517 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,006 |
| Countries That End in NIA | 0 | - | 4.92 | 109,994 |
| Countries That End in BIA | 0 | - | 4.93 | 149,514 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,437 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,704 |
| Countries That End in RIA | 0 | - | 4.93 | 127,014 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,310 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,405 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,078 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,519 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,093 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,763 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,268 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,520 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,827 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,608 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,632 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,322 |
| Countries that End in L | 0 | - | 4.94 | 157,066 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,678 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,330 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,271 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,830 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,376 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,305 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,062 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,380 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,181 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,881 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,150 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,211 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,803 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,189 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,895 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,168 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,186 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,845,734 |
| One Border Countries | 0 | - | 4.98 | 471,558 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,648,917 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,526 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,522 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,663 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,256 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,870 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,567 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,842 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,125 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,522 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,217 |
| Countries by National Anthem | 0 | - | 4.92 | 71,391 |
| NATO Countries | 0 | - | 4.98 | 283,037 |
