| Landlocked Countries Quiz | 0 | - | 4.99 | 329,641 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,363,601 |
| Members of the Arab League | 0 | - | 4.85 | 64,482 |
| Sahara Desert Countries | 0 | - | 4.97 | 128,828 |
| Himalayan Countries | 0 | - | 4.95 | 106,764 |
| Andean Countries | 0 | - | 4.91 | 59,379 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,431 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,217 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,584 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,504 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,817 |
| Danube Countries | 0 | - | 4.96 | 56,970 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,991 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,098 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,001 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,926 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,192 |
| European Landlocked Countries | 0 | - | 4.99 | 136,369 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,333 |
| Countries with the Most Species | 0 | - | 4.99 | 89,692 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,842 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,870 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,161 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,691 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,655 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,925 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,530 |
| Countries in the Alps | 0 | - | 4.84 | 103,281 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,906 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,333 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,945 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,998 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,464 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,970 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,115 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,484 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,518 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,067 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,828 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,802 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,855 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,174 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,340 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,905 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,350 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,660 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,726 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,336 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,093 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,571 |
| Largest Countries By Category | 0 | - | 4.97 | 145,721 |
| Countries by Countries | 0 | - | 4.96 | 55,133 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,374 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,968 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,927 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,123,206 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,192,707 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,004 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,024 |
| Island Countries Quiz | 0 | - | 4.99 | 664,727 |
| Biggest Countries by Area | 0 | - | 5.00 | 940,213 |
| Northernmost Countries | 0 | - | 4.99 | 329,268 |
| Countries of South America | 0 | - | 5.00 | 802,180 |
| Countries of Oceania | 0 | - | 5.00 | 903,980 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,592,468 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,592 |
| Countries with Megacities | 0 | - | 4.99 | 199,772 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,381 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,980 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 96,978 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,950 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,533 |
| Countries by Official Language | 0 | - | 4.96 | 174,134 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,200 |
| Countries in their Native Language | 0 | - | 4.98 | 179,374 |
| Independence from Whom | 0 | - | 4.99 | 187,528 |
| Subdivisions by Country | 0 | - | 4.82 | 46,685 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,568 |
| Megadiverse Countries | 0 | - | 4.96 | 126,154 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,471 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,123 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,633 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,336 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,499 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,798 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,670 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,386 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,670 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,465 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,935 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,573 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,141 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,012 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,636 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 84,356 |
| World Map Quiz | 0 | - | 4.91 | 50,427 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,152 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,329 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,877 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,105 |
| Countries With the Most Languages | 0 | - | 4.91 | 175,704 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,035 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,402 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,474 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,536 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,032 |
| Widest Countries East to West | 0 | - | 4.93 | 119,992 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,991 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,798 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,980 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,126 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 119,993 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,731 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,624 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,247 |
| Countries with Double Letters | 0 | - | 4.96 | 69,957 |
| Countries that End in N | 0 | - | 4.94 | 134,179 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 231,534 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 188,914 |
| Countries with W | 0 | - | 4.96 | 124,169 |
| Countries with Z | 0 | - | 4.98 | 246,204 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,370 |
| Countries That End in U | 0 | - | 4.95 | 108,301 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 90,788 |
| Countries that End in O | 0 | - | 4.92 | 147,529 |
| Countries that End in R | 0 | - | 4.84 | 96,840 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,646 |
| Countries Ending in "IA" | 0 | - | 4.99 | 172,677 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 156,897 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,108 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,043 |
| Countries That End in Y | 0 | - | 4.90 | 161,993 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,057 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,542 |
| Countries that End in I | 0 | - | 4.92 | 114,845 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,594 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,952 |
| Countries That End in NIA | 0 | - | 4.93 | 101,357 |
| Countries That End in BIA | 0 | - | 4.91 | 126,725 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,262 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,381 |
| Countries That End in RIA | 0 | - | 4.90 | 101,461 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,096 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 202,917 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,723 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 111,733 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,377 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,207 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,446 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,278 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,623 |
| Countries that End in L | 0 | - | 4.95 | 135,247 |
| "Land" Countries | 0 | - | 4.98 | 291,223 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,416 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,299 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,846 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,649 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 72,160 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 209,744 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 168,788 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,198 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,019 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,200 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,605 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,265 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,769 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,827 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,955 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,320,138 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,384 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,091,953 |
| One Border Countries | 0 | - | 4.98 | 412,701 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,370 |
| Top-Producing Countries | 0 | - | 4.71 | 100,512 |
| Country Codes Quiz | 0 | - | 4.46 | 77,791 |
| Countries on the Equator | 0 | - | 4.78 | 134,786 |
| Separatist Movements | 0 | - | 4.45 | 42,936 |
| Prime Meridian Countries | 0 | - | 4.63 | 52,030 |
| Next Country Alphabetically | 0 | - | 4.79 | 78,208 |
| Westernmost Countries | 0 | - | 4.50 | 47,730 |
| Easternmost Countries | 0 | - | 4.76 | 60,646 |
| Countries With the Most ISIS Fighters | 0 | - | 4.57 | 37,331 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 99,686 |
| Indochina Countries | 0 | - | 4.72 | 63,075 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,245 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 91,548 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,574 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,326 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 46,145 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,029 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 56,808 |
| Most Populous Countries By Category | 0 | - | 4.63 | 61,788 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,362 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,373 |
| Flyover Countries | 0 | - | 4.65 | 47,636 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,221 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,723 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,723 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,939 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,840 |
