| Landlocked Countries | 0 | - | 4.99 | 426,935 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,944,861 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,678 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,762 |
| Himalayan Countries | 0 | - | 4.93 | 140,680 |
| Andean Countries | 0 | - | 4.94 | 85,734 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,855 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,394 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,409 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,639 |
| Danube Countries | 0 | - | 4.97 | 72,516 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,742 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,942 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,369 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,826 |
| European Landlocked Countries | 0 | - | 4.99 | 147,704 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,481 |
| Countries with the Most Species | 0 | - | 4.99 | 103,627 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,581 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,803 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,937 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,902 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,657 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,105 |
| Countries in the Alps | 0 | - | 4.87 | 118,921 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,908 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,059 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,039 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,138 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,088 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,359 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,539 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,968 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,494 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,287 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,937 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,816 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,647 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,896 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,993 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,079 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,696 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,146 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,802 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,148 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,405 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,593 |
| Largest Countries By Category | 0 | - | 4.97 | 159,029 |
| Countries by Countries | 0 | - | 4.97 | 63,775 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,385 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,439 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,698 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,195 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,027 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,296 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,963 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,169 |
| Island Countries | 0 | - | 4.99 | 712,878 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,787 |
| Northernmost Countries | 0 | - | 4.99 | 364,444 |
| Countries of South America | 0 | - | 5.00 | 933,788 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,853 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,939 |
| "Land" Countries | 0 | - | 4.98 | 338,857 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,125 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,416 |
| Countries with Megacities | 0 | - | 4.99 | 267,646 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,062 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,286 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,405 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,390 |
| Countries by Official Language | 0 | - | 4.95 | 196,163 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,855 |
| Countries in their Native Language | 0 | - | 4.99 | 199,898 |
| Independence from Whom | 0 | - | 4.99 | 213,323 |
| Subdivisions by Country | 0 | - | 4.87 | 50,652 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,609 |
| Megadiverse Countries | 0 | - | 4.96 | 147,983 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,078 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,569 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,776 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,246 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,411 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,910 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,237 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,605 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,142 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,705 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,461 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,487 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,198 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,618 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,942 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,639 |
| World Map Quiz | 0 | - | 4.81 | 65,874 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,721 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,776 |
| Countries by Founding Story | 0 | - | 4.95 | 77,891 |
| Countries by Road Signs | 0 | - | 4.98 | 54,421 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,436 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,196 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,662 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,839 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,521 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,631 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,822 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,745 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,904 |
| Widest Countries East to West | 0 | - | 4.92 | 130,805 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,623 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,353 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,546 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,131 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,068 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,583 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,526 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,916 |
| Countries with Double Letters | 0 | - | 4.96 | 97,515 |
| Countries that End in N | 0 | - | 4.95 | 172,536 |
| Countries with Five Letters | 0 | - | 4.96 | 284,506 |
| Countries with Six Letters | 0 | - | 4.94 | 214,859 |
| Countries with W | 0 | - | 4.96 | 161,244 |
| Countries with Z | 0 | - | 4.98 | 292,888 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,599 |
| Countries That End in U | 0 | - | 4.95 | 121,350 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,353 |
| Countries that End in O | 0 | - | 4.92 | 160,341 |
| Countries that End in R | 0 | - | 4.87 | 119,259 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,037 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,079 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 184,016 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,112 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,597 |
| Countries That End in Y | 0 | - | 4.91 | 186,155 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,114 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,380 |
| Countries that End in I | 0 | - | 4.94 | 135,394 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,144 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,122 |
| Countries That End in NIA | 0 | - | 4.92 | 110,136 |
| Countries That End in BIA | 0 | - | 4.93 | 149,699 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,889 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,865 |
| Countries That End in RIA | 0 | - | 4.93 | 127,121 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,509 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,858 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,333 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,794 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,346 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,886 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,416 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,584 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,015 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,712 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,863 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,557 |
| Countries that End in L | 0 | - | 4.94 | 157,215 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,411 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,370 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,858 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,137 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,524 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,598 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,260 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,502 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,384 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,141 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,297 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,286 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,965 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,868 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,332 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,542 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,842 |
| One Border Countries | 0 | - | 4.98 | 472,397 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,739 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,851,847 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,657,966 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,427 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,451 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,782 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,970 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,327 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,691 |
| Countries by National Anthem | 0 | - | 4.92 | 71,428 |
| NATO Countries | 0 | - | 4.98 | 283,836 |
| EU Countries Quiz | 0 | - | 4.99 | 278,693 |
| Recently Independent Countries | 0 | - | 4.98 | 160,468 |
| French-Speaking Countries | 0 | - | 4.85 | 271,822 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,214 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,096 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,759 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,488 |
| German-Speaking Countries | 0 | - | 4.92 | 146,068 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,716 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,829 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,588 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,687 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,751 |
