| Countries of the World Quiz | 0 | - | 5.00 | 41,837,861 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 335,313 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,181,795 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,235,495 |
| Members of the Arab League | 0 | - | 4.86 | 66,621 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,775 |
| Himalayan Countries | 0 | - | 4.94 | 108,713 |
| Andean Countries | 0 | - | 4.91 | 60,390 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,574 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,983 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,618 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,925 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,366 |
| Danube Countries | 0 | - | 4.96 | 57,289 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,285 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,344 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,843 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,517 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,177 |
| European Landlocked Countries | 0 | - | 4.99 | 137,291 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,927 |
| Countries with the Most Species | 0 | - | 4.99 | 90,090 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,461 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,063 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,355 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,147 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,935 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,169 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 50,006 |
| Countries in the Alps | 0 | - | 4.84 | 103,991 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,564 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,791 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,372 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,479 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,999 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,427 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,652 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,836 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,750 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,493 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,252 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,079 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,067 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,671 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,756 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,327 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,828 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 62,029 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,125 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 203,275 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,702 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,896 |
| Largest Countries By Category | 0 | - | 4.97 | 146,578 |
| Countries by Countries | 0 | - | 4.95 | 55,706 |
| Country Flags with the Most White | 0 | - | 4.91 | 126,698 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,264 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 45,181 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,774 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,508 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 363,309 |
| Island Countries Quiz | 0 | - | 4.99 | 669,413 |
| Biggest Countries by Area | 0 | - | 5.00 | 948,911 |
| Northernmost Countries | 0 | - | 4.99 | 331,203 |
| Countries of South America | 0 | - | 5.00 | 811,560 |
| Countries of Oceania | 0 | - | 5.00 | 915,470 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,614,907 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,306 |
| Countries with Megacities | 0 | - | 4.99 | 202,202 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,666 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,118 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,470 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,062 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,518 |
| Countries by Official Language | 0 | - | 4.96 | 175,444 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,867 |
| Countries in their Native Language | 0 | - | 4.98 | 180,809 |
| Independence from Whom | 0 | - | 4.99 | 189,683 |
| Subdivisions by Country | 0 | - | 4.85 | 46,941 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,852 |
| Megadiverse Countries | 0 | - | 4.96 | 126,892 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 94,112 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,679 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,864 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,486 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,967 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,798 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,103 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,777 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,883 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,215 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,330 |
| Countries Furthest from the United States | 0 | - | 4.94 | 73,018 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,565 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,458 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,090 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,928 |
| World Map Quiz | 0 | - | 4.90 | 51,643 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 118,997 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,836 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,979 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,954 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 110,333 |
| Countries With the Most Languages | 0 | - | 4.90 | 178,090 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,780 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,194 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 88,423 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 55,193 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,690 |
| Widest Countries East to West | 0 | - | 4.93 | 120,658 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,144 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,701 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,904 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,472 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,950 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,761 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,599 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,822 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,444 |
| Countries with Double Letters | 0 | - | 4.96 | 72,455 |
| Countries that End in N | 0 | - | 4.94 | 136,711 |
| Countries with Five Letters Quiz | 0 | - | 4.97 | 234,501 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 191,081 |
| Countries with W | 0 | - | 4.96 | 126,176 |
| Countries with Z | 0 | - | 4.98 | 265,199 |
| Countries with Letters Missing | 0 | - | 4.97 | 170,035 |
| Countries That End in U | 0 | - | 4.95 | 109,751 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,827 |
| Countries that End in O | 0 | - | 4.92 | 148,903 |
| Countries that End in R | 0 | - | 4.85 | 97,485 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,431 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,502 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,903 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,839 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,776 |
| Countries That End in Y | 0 | - | 4.92 | 177,247 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,174 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,671 |
| Countries that End in I | 0 | - | 4.92 | 115,302 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,800 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,482 |
| Countries That End in NIA | 0 | - | 4.92 | 101,923 |
| Countries That End in BIA | 0 | - | 4.91 | 127,444 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,317 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 111,087 |
| Countries That End in RIA | 0 | - | 4.90 | 102,001 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 101,900 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 205,045 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,828 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,981 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,509 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 39,195 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,946 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,293 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,783 |
| Countries with the Word "And" | 0 | - | 4.98 | 85,211 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,647 |
| Countries that End in L | 0 | - | 4.95 | 135,988 |
| "Land" Countries | 0 | - | 4.98 | 292,556 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,429 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,936 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,462 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,138 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,719 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,317 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,185 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,940 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 135,049 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,611 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,687 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,671 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,397 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,340 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,458 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,330,430 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,717 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,121,938 |
| One Border Countries | 0 | - | 4.98 | 416,216 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,476,002 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,580 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,606 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,714 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,343 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,414 |
| Countries by National Anthem | 0 | - | 4.95 | 68,742 |
| NATO Countries Quiz | 0 | - | 4.98 | 242,721 |
| EU Countries Quiz | 0 | - | 4.99 | 231,748 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 146,628 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,581 |
| Countries That Use the Euro | 0 | - | 4.93 | 66,487 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 229,669 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 235,259 |
| German-Speaking Countries | 0 | - | 4.88 | 118,363 |
| Countries with Wild Tigers | 0 | - | 4.95 | 112,500 |
| Countries with Wild Penguins | 0 | - | 4.93 | 91,417 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 135,405 |
| Top Five Countries by Religion | 0 | - | 4.91 | 146,670 |
| Solve the Secret Country #2 | 0 | - | 4.90 | 92,704 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 82,869 |
| Olympic Host Countries | 0 | - | 4.98 | 164,562 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 118,985 |
