| Countries of the World Quiz | 0 | - | 5.00 | 47,986,087 |
| Landlocked Countries | 0 | - | 4.99 | 427,450 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,362 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,813,864 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,010 |
| Himalayan Countries | 0 | - | 4.93 | 140,908 |
| Andean Countries | 0 | - | 4.94 | 85,846 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,957 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,552 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,498 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,717 |
| Danube Countries | 0 | - | 4.97 | 72,576 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,835 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,997 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,482 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,955 |
| European Landlocked Countries | 0 | - | 4.99 | 147,797 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,567 |
| Countries with the Most Species | 0 | - | 4.99 | 103,657 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,672 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,820 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,962 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,936 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,691 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,148 |
| Countries in the Alps | 0 | - | 4.87 | 119,007 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,053 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,196 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,076 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,195 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,153 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,407 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,623 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,013 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,521 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,328 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,966 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,838 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,687 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,942 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,044 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,186 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,752 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,614 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,864 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,425 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,555 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,629 |
| Largest Countries By Category | 0 | - | 4.97 | 159,126 |
| Countries by Countries | 0 | - | 4.97 | 63,825 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,482 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,452 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,713 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,575 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,251 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,808 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,097 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,482 |
| Island Countries | 0 | - | 4.99 | 713,082 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,419 |
| Northernmost Countries | 0 | - | 4.99 | 364,698 |
| Countries of South America | 0 | - | 5.00 | 934,595 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,855 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,752 |
| "Land" Countries | 0 | - | 4.98 | 339,085 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,319 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,731 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,561 |
| Countries with Megacities | 0 | - | 4.99 | 267,994 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,213 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,370 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,543 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,474 |
| Countries by Official Language | 0 | - | 4.95 | 196,270 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,006 |
| Countries in their Native Language | 0 | - | 4.99 | 199,989 |
| Independence from Whom | 0 | - | 4.99 | 213,464 |
| Subdivisions by Country | 0 | - | 4.87 | 50,674 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,709 |
| Megadiverse Countries | 0 | - | 4.96 | 149,500 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,169 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,588 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,826 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,265 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,509 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,935 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,320 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,640 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,187 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,291 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,832 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,504 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,519 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,230 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,652 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,986 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,805 |
| World Map Quiz | 0 | - | 4.81 | 65,954 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 131,916 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,029 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,834 |
| 20 Random Country Flags | 0 | - | 4.99 | 620,653 |
| Countries by Founding Story | 0 | - | 4.95 | 77,923 |
| Countries by Road Signs | 0 | - | 4.98 | 54,469 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,565 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,259 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,728 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,995 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,579 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,695 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,873 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,775 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,975 |
| Widest Countries East to West | 0 | - | 4.92 | 130,882 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,634 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,431 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,573 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,174 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,146 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,630 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,543 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,928 |
| Countries with Double Letters | 0 | - | 4.96 | 97,709 |
| Countries that End in N | 0 | - | 4.95 | 172,704 |
| Countries with Five Letters | 0 | - | 4.96 | 284,741 |
| Countries with Six Letters | 0 | - | 4.94 | 215,030 |
| Countries with W | 0 | - | 4.96 | 161,366 |
| Countries with Z | 0 | - | 4.98 | 293,097 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,739 |
| Countries That End in U | 0 | - | 4.95 | 121,425 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,485 |
| Countries that End in O | 0 | - | 4.92 | 160,396 |
| Countries that End in R | 0 | - | 4.87 | 119,301 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,075 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,203 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,062 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,257 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,917 |
| Countries That End in Y | 0 | - | 4.91 | 186,190 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,434 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,455 |
| Countries that End in I | 0 | - | 4.94 | 135,441 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,379 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,161 |
| Countries That End in NIA | 0 | - | 4.92 | 110,173 |
| Countries That End in BIA | 0 | - | 4.93 | 149,766 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,967 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,925 |
| Countries That End in RIA | 0 | - | 4.93 | 127,175 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,564 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,007 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,428 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,892 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,451 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,938 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,482 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,616 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,082 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,756 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,938 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,654 |
| Countries that End in L | 0 | - | 4.94 | 157,273 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,684 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,384 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,904 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,171 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,557 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,706 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,338 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,546 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,440 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,220 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,337 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,304 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,976 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,885 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,379 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,454 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,974 |
| Name a Valid African Country | 0 | - | 4.98 | 155,299 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,146 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,393 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,056 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,708 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,854,276 |
| One Border Countries | 0 | - | 4.98 | 472,691 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,660,976 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,295 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,768 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,575 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,483 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,567 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,847 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,020 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,388 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,748 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,520 |
| Countries by National Anthem | 0 | - | 4.92 | 71,444 |
| NATO Countries | 0 | - | 4.98 | 284,094 |
| EU Countries Quiz | 0 | - | 4.99 | 278,994 |
