| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,563 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,011,411 |
| Landlocked Countries | 0 | - | 4.99 | 414,768 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,345 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 44,964 |
| Countries with Glaciers | 0 | - | 4.97 | 104,739 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,724 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,303 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,726,057 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,946 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,799 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,297 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,060 |
| Himalayan Countries | 0 | - | 4.95 | 135,768 |
| Andean Countries | 0 | - | 4.94 | 83,057 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,399 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,478 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,096 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,757 |
| Danube Countries | 0 | - | 4.97 | 71,198 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,927 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,657 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,742 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,648 |
| European Landlocked Countries | 0 | - | 4.99 | 145,894 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,406 |
| Countries with the Most Species | 0 | - | 4.99 | 95,310 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,557 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,241 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,411 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,025 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,667 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,036 |
| Countries in the Alps | 0 | - | 4.86 | 117,018 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,697 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,475 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,118 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,525 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,312 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,100 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,719 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,854 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,630 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,165 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,241 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,109 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,563 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,845 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,843 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,327 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,752 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,325 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,964 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,916 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,050 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,688 |
| Largest Countries By Category | 0 | - | 4.97 | 156,935 |
| Countries by Countries | 0 | - | 4.96 | 62,388 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,569 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,002 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,879 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 77,400 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,778 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,142 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,341 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,537 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,429 |
| Island Countries | 0 | - | 4.99 | 708,068 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,411 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,995 |
| Northernmost Countries | 0 | - | 4.99 | 358,375 |
| Countries of South America | 0 | - | 5.00 | 916,810 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,910 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,311 |
| "Land" Countries | 0 | - | 4.98 | 333,950 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,855 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,024 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,134 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,741 |
| Countries with Megacities | 0 | - | 4.99 | 247,843 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,609 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,258 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,997 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,208 |
| Countries by Official Language | 0 | - | 4.95 | 193,024 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,471 |
| Countries in their Native Language | 0 | - | 4.99 | 196,872 |
| Independence from Whom | 0 | - | 4.99 | 209,991 |
| Subdivisions by Country | 0 | - | 4.86 | 50,118 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,950 |
| Megadiverse Countries | 0 | - | 4.97 | 133,999 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,033 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,977 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,486 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,889 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,803 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,081 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,245 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,299 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,270 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,773 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,790 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,476 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,576 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,562 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,756 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,087 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,934 |
| World Map Quiz | 0 | - | 4.81 | 63,700 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,333 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,471 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,652 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,421 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,152 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,138 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,050 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,238 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,441 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,034 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,483 |
| Widest Countries East to West | 0 | - | 4.92 | 128,971 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,266 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,386 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,621 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,803 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,750 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,168 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 75,189 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,629 |
| Countries with Double Letters | 0 | - | 4.97 | 93,602 |
| Countries that End in N | 0 | - | 4.94 | 157,076 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,923 |
| Countries with Six Letters | 0 | - | 4.93 | 210,596 |
| Countries with W | 0 | - | 4.97 | 158,369 |
| Countries with Z | 0 | - | 4.98 | 288,132 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,700 |
| Countries That End in U | 0 | - | 4.95 | 119,590 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,800 |
| Countries that End in O | 0 | - | 4.92 | 158,624 |
| Countries that End in R | 0 | - | 4.87 | 118,347 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,910 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,324 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,486 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,604 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,149 |
| Countries That End in Y | 0 | - | 4.90 | 185,263 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,549 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,836 |
| Countries that End in I | 0 | - | 4.94 | 134,512 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,390 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,268 |
| Countries That End in NIA | 0 | - | 4.92 | 109,087 |
| Countries That End in BIA | 0 | - | 4.92 | 147,817 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,201 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,593 |
| Countries That End in RIA | 0 | - | 4.93 | 126,164 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,131 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,583 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,630 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,990 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,495 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,995 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,233 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,753 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,632 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,868 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,275 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,941 |
| Countries that End in L | 0 | - | 4.94 | 156,126 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,847 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,016 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,594 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,403 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,495 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,796 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,534 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,086 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,582 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,941 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,863 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,785 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,227 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,449 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,392 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,805,570 |
| One Border Countries | 0 | - | 4.98 | 465,235 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,593,991 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,092 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,364 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,089 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,586 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,870 |
| Majority Muslim Countries | 0 | - | 4.98 | 370,167 |
| Countries by National Anthem | 0 | - | 4.92 | 71,063 |
| NATO Countries | 0 | - | 4.98 | 276,883 |
| EU Countries Quiz | 0 | - | 4.99 | 270,617 |
| Recently Independent Countries | 0 | - | 4.98 | 158,127 |
| French-Speaking Countries | 0 | - | 4.85 | 269,137 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,424 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,372 |
