| Landlocked Countries | 0 | - | 4.99 | 427,266 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,971,087 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,926 |
| Himalayan Countries | 0 | - | 4.93 | 140,838 |
| Andean Countries | 0 | - | 4.94 | 85,805 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,923 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,495 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,470 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,694 |
| Danube Countries | 0 | - | 4.97 | 72,562 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,803 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,973 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,449 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,921 |
| European Landlocked Countries | 0 | - | 4.99 | 147,743 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,541 |
| Countries with the Most Species | 0 | - | 4.99 | 103,651 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,640 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,815 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,953 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,926 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,681 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,135 |
| Countries in the Alps | 0 | - | 4.87 | 118,980 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,001 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,136 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,055 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,172 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,128 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,393 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,600 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,994 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,515 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,315 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,954 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,831 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,677 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,926 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,023 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,152 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,737 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,478 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,844 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,315 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,499 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,619 |
| Largest Countries By Category | 0 | - | 4.97 | 159,099 |
| Countries by Countries | 0 | - | 4.97 | 63,811 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,448 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,451 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,705 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,235 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,621 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,634 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,045 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,371 |
| Island Countries | 0 | - | 4.99 | 713,016 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,188 |
| Northernmost Countries | 0 | - | 4.99 | 364,604 |
| Countries of South America | 0 | - | 5.00 | 934,315 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,561 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,093 |
| "Land" Countries | 0 | - | 4.98 | 338,999 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,098 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,507 |
| Countries with Megacities | 0 | - | 4.99 | 267,868 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,160 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,343 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,482 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,443 |
| Countries by Official Language | 0 | - | 4.95 | 196,226 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,951 |
| Countries in their Native Language | 0 | - | 4.99 | 199,964 |
| Independence from Whom | 0 | - | 4.99 | 213,415 |
| Subdivisions by Country | 0 | - | 4.87 | 50,668 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,671 |
| Megadiverse Countries | 0 | - | 4.96 | 149,098 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,140 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,578 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,810 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,260 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,476 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,285 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,626 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,167 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,777 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,489 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,509 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,219 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,642 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,980 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,740 |
| World Map Quiz | 0 | - | 4.81 | 65,930 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,904 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,818 |
| Countries by Founding Story | 0 | - | 4.95 | 77,910 |
| Countries by Road Signs | 0 | - | 4.98 | 54,451 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,519 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,236 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,710 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,936 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,557 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,665 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,852 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,764 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,944 |
| Widest Countries East to West | 0 | - | 4.92 | 130,855 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,629 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,403 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,565 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,163 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,116 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,618 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,535 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,922 |
| Countries with Double Letters | 0 | - | 4.96 | 97,640 |
| Countries that End in N | 0 | - | 4.95 | 172,640 |
| Countries with Five Letters | 0 | - | 4.96 | 284,658 |
| Countries with Six Letters | 0 | - | 4.94 | 214,968 |
| Countries with W | 0 | - | 4.96 | 161,323 |
| Countries with Z | 0 | - | 4.98 | 293,014 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,681 |
| Countries That End in U | 0 | - | 4.95 | 121,395 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,438 |
| Countries that End in O | 0 | - | 4.92 | 160,373 |
| Countries that End in R | 0 | - | 4.87 | 119,283 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,062 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,161 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,961 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,201 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,784 |
| Countries That End in Y | 0 | - | 4.91 | 186,177 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,301 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,425 |
| Countries that End in I | 0 | - | 4.94 | 135,427 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,283 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,148 |
| Countries That End in NIA | 0 | - | 4.92 | 110,159 |
| Countries That End in BIA | 0 | - | 4.93 | 149,742 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,939 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,907 |
| Countries That End in RIA | 0 | - | 4.93 | 127,150 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,546 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,954 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,398 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,866 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,411 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,927 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,460 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,612 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,061 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,739 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,912 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,621 |
| Countries that End in L | 0 | - | 4.94 | 157,250 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,601 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,381 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,888 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,158 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,546 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,665 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,314 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,526 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,417 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,196 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,321 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,299 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,971 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,877 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,365 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,066 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,990 |
| One Border Countries | 0 | - | 4.98 | 472,599 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,760 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,853,388 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,846 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,468 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,523 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,819 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,996 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,363 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,721 |
| Countries by National Anthem | 0 | - | 4.92 | 71,437 |
| NATO Countries | 0 | - | 4.98 | 283,996 |
| EU Countries Quiz | 0 | - | 4.99 | 278,905 |
| Recently Independent Countries | 0 | - | 4.98 | 160,516 |
| French-Speaking Countries | 0 | - | 4.85 | 271,887 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,244 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,219 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,920 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,804 |
| German-Speaking Countries | 0 | - | 4.92 | 146,094 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,774 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,892 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,730 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,783 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,883 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,949 |
