| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,973 |
| North Sea Countries | 0 | - | 4.92 | 87,296 |
| Black Sea Countries | 0 | - | 4.87 | 60,571 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,304 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,403 |
| Countries With No Rivers | 0 | - | 4.96 | 76,692 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,174 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,746 |
| Countries with Fjords | 0 | - | 4.94 | 100,760 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,340 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,616 |
| Megadiverse Countries | 0 | - | 4.96 | 134,747 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,030 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,595 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,477 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,717 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,315,586 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,222 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,788 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,831 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,360 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,325 |
| Landlocked Countries | 0 | - | 4.99 | 418,621 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,482 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,325 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,116 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,874 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,832 |
| Himalayan Countries | 0 | - | 4.94 | 137,282 |
| Andean Countries | 0 | - | 4.95 | 83,860 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,136 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,539 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,786 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,306 |
| Danube Countries | 0 | - | 4.97 | 71,618 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,507 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,022 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,587 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,658 |
| European Landlocked Countries | 0 | - | 4.99 | 146,737 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,091 |
| Countries with the Most Species | 0 | - | 4.99 | 102,874 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,222 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,422 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,576 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,282 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,962 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,340 |
| Countries in the Alps | 0 | - | 4.87 | 117,635 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,103 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,314 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,387 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,956 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,056 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,425 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,246 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,158 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,945 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,525 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,458 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,323 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,897 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,171 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,183 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,129 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,044 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,554 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,483 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,238 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,154 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,975 |
| Largest Countries By Category | 0 | - | 4.97 | 157,584 |
| Countries by Countries | 0 | - | 4.96 | 62,814 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,163 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,149 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,464 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,298 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,735 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,515 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,954 |
| Island Countries | 0 | - | 4.99 | 709,624 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,758 |
| Northernmost Countries | 0 | - | 4.99 | 360,358 |
| Countries of South America | 0 | - | 5.00 | 922,556 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,554 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,554 |
| "Land" Countries | 0 | - | 4.98 | 335,732 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,108 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,006 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,647 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,643 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,935 |
| Countries with Megacities | 0 | - | 4.99 | 257,739 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,803 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,937 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,083 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,946 |
| Biggest City by River | 0 | - | 4.41 | 52,818 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,489 |
| Countries by Official Language | 0 | - | 4.95 | 194,586 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,466 |
| Countries in their Native Language | 0 | - | 4.99 | 198,135 |
| Independence from Whom | 0 | - | 4.99 | 211,247 |
| Subdivisions by Country | 0 | - | 4.86 | 50,274 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,651 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,511 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,170 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,735 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,675 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,360 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,932 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,826 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,468 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,975 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,896 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,699 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,971 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,758 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,124 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,309 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,121 |
| World Map Quiz | 0 | - | 4.81 | 64,474 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,492 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,006 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,447 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,898 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,609 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,268 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,490 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,652 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,804 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,248 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,257 |
| Widest Countries East to West | 0 | - | 4.92 | 129,341 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,376 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,927 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,983 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,492 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,184 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,520 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,222 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,723 |
| Landforms by Country | 0 | - | 4.52 | 51,958 |
| Countries with Double Letters | 0 | - | 4.97 | 95,043 |
| Countries that End in N | 0 | - | 4.95 | 169,901 |
| Countries with Five Letters | 0 | - | 4.96 | 279,868 |
| Countries with Six Letters | 0 | - | 4.94 | 212,422 |
| Countries with W | 0 | - | 4.97 | 159,494 |
| Countries with Z | 0 | - | 4.98 | 289,741 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,692 |
| Countries That End in U | 0 | - | 4.95 | 120,394 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,712 |
| Countries that End in O | 0 | - | 4.92 | 159,180 |
| Countries that End in R | 0 | - | 4.87 | 118,723 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,501 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,270 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,075 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,064 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,647 |
| Countries That End in Y | 0 | - | 4.90 | 185,637 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,188 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,394 |
| Countries that End in I | 0 | - | 4.94 | 134,851 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,041 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,562 |
| Countries That End in NIA | 0 | - | 4.92 | 109,499 |
| Countries That End in BIA | 0 | - | 4.93 | 148,822 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,681 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,025 |
| Countries That End in RIA | 0 | - | 4.93 | 126,514 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,600 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,615 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,186 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,532 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,084 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,296 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,656 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,212 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,097 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,183 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,797 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,508 |
| Countries that End in L | 0 | - | 4.94 | 156,527 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,895 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,150 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,821 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,699 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,753 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,733 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,131 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,588 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,080 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,577 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,561 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,941 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,587 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,643 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,026 |
| African Great Lakes | 0 | - | 4.82 | 66,015 |
