| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,688 |
| Countries of Africa | 0 | - | 5.00 | 2,531,333 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,348,069 |
| Landlocked Countries | 0 | - | 4.99 | 419,156 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,421 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,218 |
| Countries with Glaciers | 0 | - | 4.97 | 105,335 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,440 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,576 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,898 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,076 |
| Himalayan Countries | 0 | - | 4.95 | 137,509 |
| Andean Countries | 0 | - | 4.95 | 83,982 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,253 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,724 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,873 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,376 |
| Danube Countries | 0 | - | 4.97 | 71,687 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,591 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,080 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,689 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,760 |
| European Landlocked Countries | 0 | - | 4.99 | 146,798 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,163 |
| Countries with the Most Species | 0 | - | 4.99 | 102,933 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,301 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,436 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,597 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,320 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,003 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,378 |
| Countries in the Alps | 0 | - | 4.87 | 117,716 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,155 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,405 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,434 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,019 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,126 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,727 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,302 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,207 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,977 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,571 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,496 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,347 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,947 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,203 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,227 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,227 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,079 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,583 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,556 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,469 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,269 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,012 |
| Largest Countries By Category | 0 | - | 4.97 | 157,669 |
| Countries by Countries | 0 | - | 4.96 | 62,856 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,237 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,168 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,476 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,339 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,167 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,657 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,200 |
| Island Countries | 0 | - | 4.99 | 709,845 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,130 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,260 |
| Northernmost Countries | 0 | - | 4.99 | 360,560 |
| Countries of South America | 0 | - | 5.00 | 923,150 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,387 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,951 |
| "Land" Countries | 0 | - | 4.98 | 335,837 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,569 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,800 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,083 |
| Countries with Megacities | 0 | - | 4.99 | 260,958 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,942 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,023 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,222 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,036 |
| Countries by Official Language | 0 | - | 4.95 | 194,671 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,586 |
| Countries in their Native Language | 0 | - | 4.99 | 198,218 |
| Independence from Whom | 0 | - | 4.99 | 211,363 |
| Subdivisions by Country | 0 | - | 4.86 | 50,294 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,741 |
| Megadiverse Countries | 0 | - | 4.96 | 134,781 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,571 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,192 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,762 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,024 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,728 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,395 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,004 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,854 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,496 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,997 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,031 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,726 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,005 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,790 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,165 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,334 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,249 |
| World Map Quiz | 0 | - | 4.81 | 64,571 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,693 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,051 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,547 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,944 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,664 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,378 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,535 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,690 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,844 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,274 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,302 |
| Widest Countries East to West | 0 | - | 4.92 | 129,393 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,387 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,976 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,998 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,523 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,238 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,568 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,243 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,730 |
| Countries with Double Letters | 0 | - | 4.97 | 95,120 |
| Countries that End in N | 0 | - | 4.95 | 170,050 |
| Countries with Five Letters | 0 | - | 4.96 | 280,417 |
| Countries with Six Letters | 0 | - | 4.94 | 212,522 |
| Countries with W | 0 | - | 4.97 | 159,538 |
| Countries with Z | 0 | - | 4.98 | 289,847 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,774 |
| Countries That End in U | 0 | - | 4.95 | 120,422 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,780 |
| Countries that End in O | 0 | - | 4.92 | 159,210 |
| Countries that End in R | 0 | - | 4.87 | 118,741 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,518 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,363 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,133 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,097 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,683 |
| Countries That End in Y | 0 | - | 4.91 | 185,653 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,252 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,453 |
| Countries that End in I | 0 | - | 4.94 | 134,879 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,110 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,585 |
| Countries That End in NIA | 0 | - | 4.92 | 109,523 |
| Countries That End in BIA | 0 | - | 4.93 | 148,863 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,744 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,075 |
| Countries That End in RIA | 0 | - | 4.93 | 126,548 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,656 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,751 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,259 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,625 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,147 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,339 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,694 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,256 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,148 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,207 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,847 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,558 |
| Countries that End in L | 0 | - | 4.94 | 156,548 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,095 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,157 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,848 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,734 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,790 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,812 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,194 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,647 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,151 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,635 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,599 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,964 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,605 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,678 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,823,357 |
| One Border Countries | 0 | - | 4.98 | 467,786 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,615,833 |
| One Country By Letter By Continent | 0 | - | 5.00 | 123,483 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,574 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,468 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,703 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,291 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,389 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,389 |
| Countries by National Anthem | 0 | - | 4.93 | 71,186 |
| NATO Countries | 0 | - | 4.98 | 279,427 |
| EU Countries Quiz | 0 | - | 4.99 | 273,062 |
| Recently Independent Countries | 0 | - | 4.98 | 159,043 |
| French-Speaking Countries | 0 | - | 4.85 | 270,252 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,771 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,626 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,566 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,083 |
| German-Speaking Countries | 0 | - | 4.91 | 145,366 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,878 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,347 |
