| Countries of the World Quiz | 0 | - | 5.00 | 40,393,794 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,239 |
| Countries with Wild Penguins | 0 | - | 4.93 | 89,588 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.89 | 78,047 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 316,669 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,010,102 |
| Countries with the Most Sheep | 0 | - | 4.89 | 82,142 |
| Countries on the Equator | 0 | - | 4.82 | 131,892 |
| Members of the Arab League | 0 | - | 4.81 | 58,887 |
| Sahara Desert Countries | 0 | - | 4.97 | 124,938 |
| Himalayan Countries | 0 | - | 4.95 | 102,238 |
| Andean Countries | 0 | - | 4.90 | 56,791 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,611 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,504 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,802 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,469 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,663 |
| Danube Countries | 0 | - | 4.97 | 56,326 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,350 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,560 |
| Countries with the Best Passports | 0 | - | 4.86 | 70,201 |
| Countries with the Worst Passports | 0 | - | 4.86 | 48,713 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,301 |
| European Landlocked Countries | 0 | - | 4.99 | 114,797 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,669 |
| Countries with the Most Species | 0 | - | 4.99 | 89,061 |
| Countries 197 to 205 | 0 | - | 4.87 | 55,729 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,406 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,778 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,699 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,068 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,421 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,623 |
| Countries in the Alps | 0 | - | 4.82 | 101,714 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,530 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,613 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,076 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,641 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,283 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 86,799 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 88,979 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,708 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,030 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,085 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,848 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,303 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,377 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 94,875 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,441 |
| Countries with the Most Grassland | 0 | - | 4.93 | 68,905 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,395 |
| Countries with the Most Climate Zones | 0 | - | 4.97 | 60,905 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,891 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 192,210 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,132 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,905 |
| Largest Countries By Category | 0 | - | 4.96 | 143,752 |
| Countries by Countries | 0 | - | 4.96 | 53,989 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,331 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,207 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,225 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 351,201 |
| Island Countries Quiz | 0 | - | 4.99 | 637,673 |
| Biggest Countries by Area | 0 | - | 5.00 | 923,638 |
| Northernmost Countries | 0 | - | 4.99 | 325,080 |
| Countries of South America | 0 | - | 5.00 | 782,364 |
| Countries of Oceania | 0 | - | 5.00 | 880,335 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,102,317 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,548,408 |
| Countries that Catch the Most Fish | 0 | - | 4.88 | 100,346 |
| Countries with the Most Wolves | 0 | - | 4.88 | 78,048 |
| Countries With Two or More Bear Species | 0 | - | 4.89 | 18,562 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 123,949 |
| Countries with Megacities | 0 | - | 4.99 | 194,426 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,170 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,718 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,495 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,586 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,701 |
| Countries by Official Language | 0 | - | 4.95 | 153,303 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,297 |
| Countries in their Native Language | 0 | - | 4.98 | 176,809 |
| Independence from Whom | 0 | - | 4.99 | 182,682 |
| Subdivisions by Country | 0 | - | 4.82 | 46,148 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 111,716 |
| Megadiverse Countries | 0 | - | 4.96 | 124,643 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 89,769 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 105,923 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,084 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 129,714 |
| Most Recently-Settled Countries | 0 | - | 4.91 | 48,560 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,456 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,238 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,433 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,940 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 42,729 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,749 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,288 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,457 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,855 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,674 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 79,781 |
| World Map Quiz | 0 | - | 4.90 | 47,982 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,654 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,152 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,001 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 106,942 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,310 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,486 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,772 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,330 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,208 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,744 |
| Widest Countries East to West | 0 | - | 4.93 | 118,449 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,661 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,772 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,063 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,701 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 117,557 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,429 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,234 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,822 |
| Countries with Double Letters | 0 | - | 4.96 | 66,424 |
| Countries that End in N | 0 | - | 4.94 | 130,806 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 227,311 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,148 |
| Countries with W | 0 | - | 4.97 | 121,113 |
| Countries with Z | 0 | - | 4.98 | 241,775 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,283 |
| Countries That End in U | 0 | - | 4.94 | 106,576 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.96 | 87,987 |
| Countries that End in O | 0 | - | 4.92 | 146,211 |
| Countries that End in R | 0 | - | 4.85 | 95,992 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,766 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,321 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,738 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,476 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,406 |
| Countries That End in Y | 0 | - | 4.90 | 160,729 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,483 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,682 |
| Countries that End in I | 0 | - | 4.92 | 114,098 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,269 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,743 |
| Countries That End in NIA | 0 | - | 4.93 | 100,244 |
| Countries That End in BIA | 0 | - | 4.91 | 125,225 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,270 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 108,944 |
| Countries That End in RIA | 0 | - | 4.89 | 100,398 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,650 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 198,402 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,499 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 109,297 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,222 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,437 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 95,795 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,302 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,643 |
| Countries that End in L | 0 | - | 4.95 | 133,248 |
| "Land" Countries | 0 | - | 4.98 | 287,697 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,632 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,055 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,638 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,414 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,028 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 205,989 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 156,824 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,591 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 131,488 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 191,834 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 139,863 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 65,380 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,605 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,834 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,331 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,300,772 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,294 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,030,851 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,350,826 |
| One Border Countries | 0 | - | 4.98 | 406,207 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 65,717 |
| South China Sea Countries | 0 | - | 4.81 | 53,467 |
| Countries with the Most Wild Elephants | 0 | - | 4.58 | 50,453 |
| Animal Populations of Countries | 0 | - | 4.50 | 39,823 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 127,401 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.91 | 88,477 |
| European Countries with NO Wolves | 0 | - | 4.63 | 63,496 |
| Countries With One Word and Three A's | 0 | - | 4.83 | 30,139 |
| Top 15 Countries with the Most Cows | 0 | - | 4.66 | 89,100 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,244 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,210 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,132 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,434 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,316 |
| Countries by National Anthem | 0 | - | 4.94 | 61,595 |
| NATO Countries Quiz | 0 | - | 4.98 | 223,220 |
| EU Countries Quiz | 0 | - | 4.99 | 225,760 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,230 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,096 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,370 |
