| Landlocked Countries | 0 | - | 4.99 | 420,342 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,448,222 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,639 |
| Himalayan Countries | 0 | - | 4.95 | 138,041 |
| Andean Countries | 0 | - | 4.95 | 84,234 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,460 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,282 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,098 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,540 |
| Danube Countries | 0 | - | 4.97 | 71,813 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,760 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,206 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,938 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,388 |
| European Landlocked Countries | 0 | - | 4.99 | 146,950 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,351 |
| Countries with the Most Species | 0 | - | 4.99 | 103,074 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,513 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,494 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,652 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,432 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,112 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,497 |
| Countries in the Alps | 0 | - | 4.87 | 117,942 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,111 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,671 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,540 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,434 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,285 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,826 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,455 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,326 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,067 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,695 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,560 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,415 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,057 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,338 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,351 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,493 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,165 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,678 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,788 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,100 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,627 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,093 |
| Largest Countries By Category | 0 | - | 4.97 | 157,902 |
| Countries by Countries | 0 | - | 4.97 | 63,001 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,441 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,212 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,504 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,493 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,659 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,177 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,003 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,155 |
| Island Countries | 0 | - | 4.99 | 710,330 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,698 |
| Northernmost Countries | 0 | - | 4.99 | 361,171 |
| Countries of South America | 0 | - | 5.00 | 924,905 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,793 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,458 |
| "Land" Countries | 0 | - | 4.98 | 336,166 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,306 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,436 |
| Countries with Megacities | 0 | - | 4.99 | 263,267 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,268 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,229 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,569 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,266 |
| Countries by Official Language | 0 | - | 4.95 | 194,911 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,920 |
| Countries in their Native Language | 0 | - | 4.99 | 198,437 |
| Independence from Whom | 0 | - | 4.99 | 211,682 |
| Subdivisions by Country | 0 | - | 4.86 | 50,355 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,956 |
| Megadiverse Countries | 0 | - | 4.96 | 134,870 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,769 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,252 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,841 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,058 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,897 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,470 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,196 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,929 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,556 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,035 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,323 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,787 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,087 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,860 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,249 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,409 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,621 |
| World Map Quiz | 0 | - | 4.81 | 64,845 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,352 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,179 |
| Countries by Founding Story | 0 | - | 4.95 | 77,206 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,764 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,080 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,820 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,744 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,698 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,835 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,963 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,347 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,423 |
| Widest Countries East to West | 0 | - | 4.92 | 129,491 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,150 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,056 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,632 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,401 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,694 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,307 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,759 |
| Countries with Double Letters | 0 | - | 4.97 | 95,373 |
| Countries that End in N | 0 | - | 4.95 | 170,405 |
| Countries with Five Letters | 0 | - | 4.96 | 281,325 |
| Countries with Six Letters | 0 | - | 4.94 | 212,820 |
| Countries with W | 0 | - | 4.97 | 159,719 |
| Countries with Z | 0 | - | 4.98 | 290,623 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,980 |
| Countries That End in U | 0 | - | 4.95 | 120,519 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,996 |
| Countries that End in O | 0 | - | 4.92 | 159,288 |
| Countries that End in R | 0 | - | 4.87 | 118,806 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,573 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,601 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,325 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,220 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,830 |
| Countries That End in Y | 0 | - | 4.91 | 185,723 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,531 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,603 |
| Countries that End in I | 0 | - | 4.94 | 134,952 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,721 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,668 |
| Countries That End in NIA | 0 | - | 4.92 | 109,627 |
| Countries That End in BIA | 0 | - | 4.93 | 148,979 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,881 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,205 |
| Countries That End in RIA | 0 | - | 4.93 | 126,644 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,775 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,086 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,409 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,799 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,338 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,415 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,797 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,358 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,298 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,287 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,999 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,714 |
| Countries that End in L | 0 | - | 4.94 | 156,654 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,770 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,190 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,910 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,823 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,872 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,411 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,389 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,805 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,328 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,834 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,710 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,016 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,641 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,760 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,504 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,293 |
| One Border Countries | 0 | - | 4.98 | 468,546 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,501 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,463 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,713 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,775 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,882 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,386 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,530 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,072 |
| Countries by National Anthem | 0 | - | 4.93 | 71,234 |
| NATO Countries | 0 | - | 4.98 | 280,314 |
| EU Countries Quiz | 0 | - | 4.99 | 274,147 |
| Recently Independent Countries | 0 | - | 4.98 | 159,215 |
| French-Speaking Countries | 0 | - | 4.85 | 270,482 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,820 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,012 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,292 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,098 |
| German-Speaking Countries | 0 | - | 4.92 | 145,543 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,801 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,161 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,710 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,382 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,343 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,586 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,819 |
| Olympic Host Countries | 0 | - | 4.98 | 200,717 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,816 |
