| Landlocked Countries Quiz | 0 | - | 4.99 | 331,317 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,507,802 |
| Members of the Arab League | 0 | - | 4.85 | 65,156 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,343 |
| Himalayan Countries | 0 | - | 4.94 | 107,321 |
| Andean Countries | 0 | - | 4.91 | 59,696 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,766 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,458 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,841 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,642 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,969 |
| Danube Countries | 0 | - | 4.96 | 57,065 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,086 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,173 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,276 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,098 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,390 |
| European Landlocked Countries | 0 | - | 4.99 | 136,768 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,507 |
| Countries with the Most Species | 0 | - | 4.99 | 89,765 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,996 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,915 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,220 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,816 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,741 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,998 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,670 |
| Countries in the Alps | 0 | - | 4.84 | 103,500 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,114 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,748 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,071 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,138 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,644 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,108 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,272 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,586 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,589 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,188 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,947 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,889 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,916 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,323 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,461 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,032 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,797 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,775 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,852 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 200,485 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,565 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,672 |
| Largest Countries By Category | 0 | - | 4.97 | 146,002 |
| Countries by Countries | 0 | - | 4.96 | 55,312 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,673 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,062 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,180 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,141,227 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,205,818 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,607 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 360,317 |
| Island Countries Quiz | 0 | - | 4.99 | 666,175 |
| Biggest Countries by Area | 0 | - | 5.00 | 942,871 |
| Northernmost Countries | 0 | - | 4.99 | 330,005 |
| Countries of South America | 0 | - | 5.00 | 804,895 |
| Countries of Oceania | 0 | - | 5.00 | 907,238 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,599,196 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 128,106 |
| Countries with Megacities | 0 | - | 4.99 | 200,498 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 174,199 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,283 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,438 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,283 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 251,443 |
| Countries by Official Language | 0 | - | 4.96 | 174,521 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,875 |
| Countries in their Native Language | 0 | - | 4.98 | 179,675 |
| Independence from Whom | 0 | - | 4.99 | 188,068 |
| Subdivisions by Country | 0 | - | 4.82 | 46,761 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,942 |
| Megadiverse Countries | 0 | - | 4.96 | 126,297 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,840 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,285 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,685 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,590 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,632 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,113 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,805 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,494 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,730 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,675 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,044 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,701 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,218 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,136 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,776 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 85,004 |
| World Map Quiz | 0 | - | 4.91 | 50,777 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,347 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,973 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,157 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,418 |
| Countries With the Most Languages | 0 | - | 4.91 | 176,373 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,392 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,668 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,757 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,757 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,238 |
| Widest Countries East to West | 0 | - | 4.93 | 120,200 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,043 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,045 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,532 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,090 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,312 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,244 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,904 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,688 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,299 |
| Countries with Double Letters | 0 | - | 4.96 | 70,995 |
| Countries that End in N | 0 | - | 4.94 | 135,234 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 232,565 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,721 |
| Countries with W | 0 | - | 4.96 | 125,035 |
| Countries with Z | 0 | - | 4.98 | 262,795 |
| Countries with Letters Missing | 0 | - | 4.97 | 169,064 |
| Countries That End in U | 0 | - | 4.95 | 108,984 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 91,697 |
| Countries that End in O | 0 | - | 4.92 | 148,306 |
| Countries that End in R | 0 | - | 4.85 | 97,127 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,860 |
| Countries Ending in "IA" | 0 | - | 4.99 | 173,271 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,219 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,339 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,283 |
| Countries That End in Y | 0 | - | 4.90 | 162,169 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,390 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 121,981 |
| Countries that End in I | 0 | - | 4.92 | 115,021 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,068 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,120 |
| Countries That End in NIA | 0 | - | 4.93 | 101,528 |
| Countries That End in BIA | 0 | - | 4.91 | 126,955 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,650 |
| Countries Whose Names Start with Saint | 0 | - | 4.89 | 110,592 |
| Countries That End in RIA | 0 | - | 4.90 | 101,622 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,317 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,523 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,058 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,125 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,708 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,464 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,707 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,423 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,932 |
| Countries that End in L | 0 | - | 4.95 | 135,467 |
| "Land" Countries | 0 | - | 4.98 | 291,646 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,765 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 80,011 |
| City to Country Quiz #1 | 0 | - | 4.94 | 135,022 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,798 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,290 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 210,213 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 169,425 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,392 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,303 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,595 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,886 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,382 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,995 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,990 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,107 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,323,240 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 352,259 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,100,825 |
| One Border Countries | 0 | - | 4.98 | 413,746 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,554 |
| Top-Producing Countries | 0 | - | 4.71 | 100,613 |
| Country Codes Quiz | 0 | - | 4.45 | 77,900 |
| Countries on the Equator | 0 | - | 4.78 | 134,944 |
| Separatist Movements | 0 | - | 4.45 | 43,017 |
| Prime Meridian Countries | 0 | - | 4.63 | 52,075 |
| Next Country Alphabetically | 0 | - | 4.75 | 80,559 |
| Westernmost Countries | 0 | - | 4.50 | 47,785 |
| Easternmost Countries | 0 | - | 4.76 | 60,695 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 37,394 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 99,909 |
| Indochina Countries | 0 | - | 4.72 | 63,176 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,276 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 91,679 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,630 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,377 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.75 | 46,203 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,115 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 56,920 |
| Most Populous Countries By Category | 0 | - | 4.63 | 61,906 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,447 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,501 |
| Flyover Countries | 0 | - | 4.65 | 47,726 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,413 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,796 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,863 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,984 |
