| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,697 |
| Countries with Glaciers | 0 | - | 4.97 | 105,362 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,596 |
| Least-Forested Countries | 0 | - | 4.53 | 65,166 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,016 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,371,781 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,619 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,790 |
| Landlocked Countries | 0 | - | 4.99 | 419,450 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,621 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,760,012 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,206 |
| Himalayan Countries | 0 | - | 4.95 | 137,646 |
| Andean Countries | 0 | - | 4.95 | 84,050 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,299 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,793 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,916 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,413 |
| Danube Countries | 0 | - | 4.97 | 71,719 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,636 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,112 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,739 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,816 |
| European Landlocked Countries | 0 | - | 4.99 | 146,831 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,204 |
| Countries with the Most Species | 0 | - | 4.99 | 102,978 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,353 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,442 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,608 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,346 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,019 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,412 |
| Countries in the Alps | 0 | - | 4.87 | 117,767 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,194 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,473 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,452 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,052 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,159 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,751 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,345 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,241 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,002 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,598 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,512 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,362 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,970 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,236 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,253 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,282 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,096 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,598 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,617 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,599 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,358 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,026 |
| Largest Countries By Category | 0 | - | 4.97 | 157,733 |
| Countries by Countries | 0 | - | 4.96 | 62,892 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,282 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,173 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,480 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,377 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,434 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,744 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,387 |
| Island Countries | 0 | - | 4.99 | 709,985 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,606 |
| Northernmost Countries | 0 | - | 4.99 | 360,721 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,601 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,446 |
| Countries of South America | 0 | - | 5.00 | 923,638 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,041 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,174 |
| "Land" Countries | 0 | - | 4.98 | 335,915 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,141 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,892 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,165 |
| Countries with Megacities | 0 | - | 4.99 | 261,850 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,032 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,072 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,318 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,109 |
| Countries by Official Language | 0 | - | 4.95 | 194,743 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,668 |
| Countries in their Native Language | 0 | - | 4.99 | 198,281 |
| Independence from Whom | 0 | - | 4.99 | 211,448 |
| Subdivisions by Country | 0 | - | 4.86 | 50,306 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,801 |
| Megadiverse Countries | 0 | - | 4.96 | 134,804 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,618 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,208 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,778 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,030 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,764 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,415 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,047 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,870 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,514 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,006 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,107 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,745 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,022 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,807 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,182 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,355 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,339 |
| World Map Quiz | 0 | - | 4.81 | 64,680 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,842 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,081 |
| Countries by Founding Story | 0 | - | 4.95 | 77,112 |
| Countries by Road Signs | 0 | - | 4.98 | 53,703 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,619 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,994 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,715 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,491 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,586 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,728 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,872 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,299 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,331 |
| Widest Countries East to West | 0 | - | 4.92 | 129,418 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,397 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,011 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,012 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,559 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,284 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,605 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,257 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,736 |
| Countries with Double Letters | 0 | - | 4.97 | 95,170 |
| Countries that End in N | 0 | - | 4.95 | 170,159 |
| Countries with Five Letters | 0 | - | 4.96 | 280,760 |
| Countries with Six Letters | 0 | - | 4.94 | 212,599 |
| Countries with W | 0 | - | 4.97 | 159,574 |
| Countries with Z | 0 | - | 4.98 | 289,921 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,813 |
| Countries That End in U | 0 | - | 4.95 | 120,435 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,824 |
| Countries that End in O | 0 | - | 4.92 | 159,226 |
| Countries that End in R | 0 | - | 4.87 | 118,753 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,531 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,425 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,168 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,126 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,716 |
| Countries That End in Y | 0 | - | 4.91 | 185,666 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,321 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,486 |
| Countries that End in I | 0 | - | 4.94 | 134,901 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,168 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,603 |
| Countries That End in NIA | 0 | - | 4.92 | 109,542 |
| Countries That End in BIA | 0 | - | 4.93 | 148,887 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,780 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,106 |
| Countries That End in RIA | 0 | - | 4.93 | 126,567 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,687 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,844 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,294 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,675 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,207 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,360 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,720 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,287 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,186 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,226 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,889 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,600 |
| Countries that End in L | 0 | - | 4.94 | 156,576 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,259 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,162 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,864 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,751 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,807 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,880 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,249 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,684 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,187 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,685 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,622 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,972 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,611 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,700 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,061 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,915 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,146 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,824,543 |
| One Border Countries | 0 | - | 4.98 | 467,970 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,617,662 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,425 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,229 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,603 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,536 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,745 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,315 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,435 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,983 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,591 |
| Countries by National Anthem | 0 | - | 4.93 | 71,198 |
| NATO Countries | 0 | - | 4.98 | 279,605 |
| EU Countries Quiz | 0 | - | 4.99 | 273,257 |
