| Spanish-Speaking Countries | 0 | - | 4.95 | 356,508 |
| Countries by Official Language | 0 | - | 4.95 | 181,840 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 278,780 |
| Countries in their Native Language | 0 | - | 4.98 | 186,802 |
| Countries With the Most English Speakers | 0 | - | 4.90 | 117,037 |
| French-Speaking Countries | 0 | - | 4.84 | 253,203 |
| German-Speaking Countries | 0 | - | 4.88 | 120,376 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,598,677 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 373,085 |
| English Speaking Countries | 0 | - | 4.68 | 347,449 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,331,165 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,403,933 |
| Spanish to English Country Names | 0 | - | 4.84 | 24,945 |
| Sahara Desert Countries | 0 | - | 4.98 | 141,107 |
| Himalayan Countries | 0 | - | 4.95 | 118,279 |
| Andean Countries | 0 | - | 4.92 | 66,222 |
| Countries with the Oldest Median Age | 0 | - | 4.83 | 67,322 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 54,963 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,134 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,026 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 57,726 |
| Danube Countries | 0 | - | 4.97 | 59,775 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,448 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 80,845 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,062 |
| Countries with the Worst Passports | 0 | - | 4.91 | 60,076 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 134,123 |
| European Landlocked Countries | 0 | - | 4.99 | 139,730 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,184 |
| Countries with the Most Species | 0 | - | 4.99 | 91,634 |
| Countries 197 to 205 | 0 | - | 4.87 | 61,684 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,249 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,382 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,663 |
| Countries that Use the Peso | 0 | - | 4.83 | 48,829 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,267 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,691 |
| Countries in the Alps | 0 | - | 4.86 | 108,533 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,604 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 95,693 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,564 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,470 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,311 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,025 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 93,895 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 48,994 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,323 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 57,883 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,064 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,669 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 38,534 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,300 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,018 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,632 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 106,854 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,082 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,020 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 217,601 |
| World Countries - Blind Typing | 0 | - | 5.00 | 82,504 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 44,378 |
| Largest Countries By Category | 0 | - | 4.97 | 149,924 |
| Countries by Countries | 0 | - | 4.96 | 57,691 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,115 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,303 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,002 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 82,776 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.96 | 121,043 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 377,356 |
| Island Countries Quiz | 0 | - | 4.99 | 685,194 |
| Biggest Countries by Area | 0 | - | 5.00 | 978,867 |
| Northernmost Countries | 0 | - | 4.99 | 339,763 |
| Countries of South America | 0 | - | 5.00 | 847,677 |
| Countries of Oceania | 0 | - | 5.00 | 958,230 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,696,079 |
| Top World Languages | 0 | - | 4.91 | 756,925 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.68 | 107,950 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,223,478 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 155,067 |
| Countries with Megacities | 0 | - | 4.99 | 213,754 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,020 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 104,768 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 105,233 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 71,469 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 265,828 |
| Independence from Whom | 0 | - | 4.99 | 197,283 |
| Subdivisions by Country | 0 | - | 4.86 | 48,127 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 121,773 |
| Megadiverse Countries | 0 | - | 4.96 | 129,762 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,112 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,061 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 153,828 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,760 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 84,807 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,257 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,532 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,076 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 64,475 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,106 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,260 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,612 |
| Straight Shot to the Arctic Circle | 0 | - | 4.90 | 71,496 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 67,897 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 95,366 |
| World Map Quiz | 0 | - | 4.88 | 56,132 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 130,708 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,674 |
| Countries by Founding Story | 0 | - | 4.94 | 71,722 |
| Countries by Road Signs | 0 | - | 4.98 | 48,687 |
| Southernmost Countries of the World | 0 | - | 4.99 | 216,438 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,190 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 114,816 |
| Countries With the Most Languages | 0 | - | 4.88 | 186,558 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,737 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,395 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,109 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,604 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,718 |
| Widest Countries East to West | 0 | - | 4.93 | 123,633 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,911 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,205 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,007 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,476 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 123,941 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,447 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,739 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,287 |
| Countries with Double Letters | 0 | - | 4.96 | 79,749 |
| Countries that End in N | 0 | - | 4.93 | 144,022 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 242,808 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,213 |
| Countries with W | 0 | - | 4.97 | 131,707 |
| Countries with Z | 0 | - | 4.98 | 273,285 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,035 |
| Countries That End in U | 0 | - | 4.95 | 113,141 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 98,508 |
| Countries that End in O | 0 | - | 4.92 | 152,852 |
| Countries that End in R | 0 | - | 4.84 | 99,351 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 150,987 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,042 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,137 |
| Countries by Last Two Letters | 0 | - | 4.89 | 120,918 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,445 |
| Countries That End in Y | 0 | - | 4.91 | 181,103 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 187,534 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,384 |
| Countries that End in I | 0 | - | 4.92 | 116,928 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,009 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,423 |
| Countries That End in NIA | 0 | - | 4.92 | 104,430 |
| Countries That End in BIA | 0 | - | 4.92 | 141,446 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 159,951 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 113,854 |
| Countries That End in RIA | 0 | - | 4.89 | 104,781 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 104,928 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 212,698 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 125,917 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 117,565 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 83,582 |
| Countries With One Word and Three A's | 0 | - | 4.93 | 47,737 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 96,803 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 118,915 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,647 |
| Countries with the Word "And" | 0 | - | 4.98 | 88,751 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,498 |
| Countries that End in L | 0 | - | 4.94 | 150,874 |
| "Land" Countries | 0 | - | 4.98 | 298,226 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 195,622 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,701 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,094 |
| City to Country Quiz #3 | 0 | - | 4.86 | 102,996 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,742 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 217,532 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,109 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 121,362 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,331 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,124 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,055 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,361 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,342 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,526 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,229 |
| Places in their Native Language #1 | 0 | - | 4.84 | 229,538 |
| Places in their Native Language #2 | 0 | - | 4.89 | 118,117 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,368,417 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 361,817 |
| One Border Countries | 0 | - | 4.97 | 426,916 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,591,169 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 80,760 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 255,186 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 114,610 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 106,926 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 86,871 |
| Countries by Population Range - Tile Select | 0 | - | 4.85 | 54,063 |
| Capitals in their Native Languages | 0 | - | 4.94 | 129,477 |
| Countries by National Anthem | 0 | - | 4.94 | 69,562 |
| NATO Countries Quiz | 0 | - | 4.98 | 254,865 |
| EU Countries Quiz | 0 | - | 4.99 | 239,644 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 150,675 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 80,079 |
| Countries That Use the Euro | 0 | - | 4.92 | 73,248 |
