| Countries with Double Letters | 0 | - | 4.96 | 67,230 |
| Countries that End in N | 0 | - | 4.94 | 131,690 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 228,397 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,949 |
| Countries with W | 0 | - | 4.97 | 121,922 |
| Countries with Z | 0 | - | 4.98 | 243,098 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,814 |
| Countries That End in U | 0 | - | 4.94 | 107,129 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,548 |
| Countries that End in O | 0 | - | 4.92 | 146,527 |
| Countries that End in R | 0 | - | 4.86 | 96,203 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,953 |
| Countries Ending in "IA" | 0 | - | 4.99 | 170,202 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,029 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,704 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,644 |
| Countries That End in Y | 0 | - | 4.90 | 161,133 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,830 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,985 |
| Countries that End in I | 0 | - | 4.92 | 114,222 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,621 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,913 |
| Countries That End in NIA | 0 | - | 4.93 | 100,417 |
| Countries That End in BIA | 0 | - | 4.91 | 125,486 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,526 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,164 |
| Countries That End in RIA | 0 | - | 4.89 | 100,549 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,861 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 199,063 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,838 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 109,655 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,550 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,660 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,066 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,464 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,942 |
| Countries that End in L | 0 | - | 4.95 | 133,494 |
| "Land" Countries | 0 | - | 4.98 | 288,122 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,955 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,092 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,319 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 318,501 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,541,702 |
| Countries with Four Letters | 0 | - | 4.99 | 374,614 |
| Countries on the Equator | 0 | - | 4.83 | 133,096 |
| Members of the Arab League | 0 | - | 4.82 | 59,657 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,400 |
| Himalayan Countries | 0 | - | 4.95 | 102,759 |
| Andean Countries | 0 | - | 4.90 | 57,108 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,956 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,645 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,991 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,618 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,815 |
| Danube Countries | 0 | - | 4.97 | 56,399 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,437 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,632 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,494 |
| Countries with the Worst Passports | 0 | - | 4.87 | 48,884 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,506 |
| European Landlocked Countries | 0 | - | 4.99 | 114,889 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,851 |
| Countries with the Most Species | 0 | - | 4.99 | 89,111 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,925 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,479 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,847 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,831 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,165 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,498 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,759 |
| Countries in the Alps | 0 | - | 4.83 | 101,966 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,771 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,996 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,192 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,817 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,453 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,144 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,147 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,822 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,103 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,239 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,986 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,369 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,453 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,057 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,565 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,058 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,832 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,008 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,019 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 193,387 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,637 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,008 |
| Largest Countries By Category | 0 | - | 4.96 | 144,042 |
| Countries by Countries | 0 | - | 4.96 | 54,186 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,028,015 |
| Country Flags with the Most White | 0 | - | 4.90 | 107,838 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,429 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,500 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 116,032 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 178,480 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,941 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 352,367 |
| Island Countries Quiz | 0 | - | 4.99 | 639,428 |
| Biggest Countries by Area | 0 | - | 5.00 | 926,156 |
| Northernmost Countries | 0 | - | 4.99 | 325,610 |
| Countries of South America | 0 | - | 5.00 | 785,115 |
| Countries of Oceania | 0 | - | 5.00 | 883,940 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,115,879 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,555,178 |
| Countries with J | 0 | - | 4.56 | 170,049 |
| Add A Letter - Make a Country | 0 | - | 4.79 | 67,736 |
| Countries by Consonants | 0 | - | 4.44 | 72,496 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,420 |
| Countries with Megacities | 0 | - | 4.99 | 195,126 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,766 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,013 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,911 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,885 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,552 |
| Countries by Official Language | 0 | - | 4.95 | 153,674 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 247,149 |
| Countries in their Native Language | 0 | - | 4.98 | 177,186 |
| Independence from Whom | 0 | - | 4.99 | 184,016 |
| Subdivisions by Country | 0 | - | 4.82 | 46,236 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,460 |
| Megadiverse Countries | 0 | - | 4.96 | 124,855 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,153 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,091 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,163 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,224 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,805 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,028 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,400 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,586 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,079 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,131 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,887 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,498 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,532 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,045 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,830 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,518 |
| World Map Quiz | 0 | - | 4.90 | 48,295 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 111,116 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,876 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,548 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,249 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,217 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,929 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,662 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,982 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,623 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,402 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,944 |
| Widest Countries East to West | 0 | - | 4.93 | 118,822 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,714 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,035 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,158 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,898 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,226 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,631 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,294 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,888 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,861 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,833 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,189 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,551 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 161,847 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,842 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 131,822 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,282 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,138 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,537 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,729 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,968 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,655 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,878 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,839 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,040,185 |
| One Border Countries | 0 | - | 4.98 | 407,083 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 92,546 |
| Most Similar Country Names | 0 | - | 4.15 | 43,475 |
| Longest Country Name A-Z | 0 | - | 4.36 | 36,634 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,363,584 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,495 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,724 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,354 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,546 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,532 |
| Countries by National Anthem | 0 | - | 4.94 | 61,669 |
| NATO Countries Quiz | 0 | - | 4.98 | 224,000 |
| EU Countries Quiz | 0 | - | 4.99 | 226,427 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,821 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 77,233 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,717 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 224,606 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 216,287 |
| German-Speaking Countries | 0 | - | 4.88 | 117,217 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,398 |
