| Landlocked Countries | 0 | - | 4.99 | 420,511 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,457,835 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,701 |
| Himalayan Countries | 0 | - | 4.95 | 138,080 |
| Andean Countries | 0 | - | 4.95 | 84,263 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,483 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,320 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,118 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,558 |
| Danube Countries | 0 | - | 4.97 | 71,831 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,789 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,230 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,963 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,420 |
| European Landlocked Countries | 0 | - | 4.99 | 146,963 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,372 |
| Countries with the Most Species | 0 | - | 4.99 | 103,088 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,529 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,503 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,658 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,443 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,114 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,503 |
| Countries in the Alps | 0 | - | 4.87 | 117,955 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,418 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,704 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,548 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,450 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,305 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,831 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,466 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,337 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,074 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,701 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,566 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,419 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,069 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,349 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,363 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,532 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,178 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,687 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,822 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,157 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,659 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,105 |
| Largest Countries By Category | 0 | - | 4.97 | 157,927 |
| Countries by Countries | 0 | - | 4.97 | 63,008 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,461 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,215 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,509 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,504 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,463 |
| Bordering Countries by HDI Difference | 0 | - | 4.88 | 51,926 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,270 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,034 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,217 |
| Island Countries | 0 | - | 4.99 | 710,372 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,853 |
| Northernmost Countries | 0 | - | 4.99 | 361,213 |
| Countries of South America | 0 | - | 5.00 | 925,077 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,000 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,850 |
| "Land" Countries | 0 | - | 4.98 | 336,360 |
| Highest HDI Countries with Exceptions | 0 | - | 4.61 | 63,101 |
| Lowest HDI Countries with Exceptions | 0 | - | 4.63 | 43,414 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,623 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,458 |
| Countries with Megacities | 0 | - | 4.99 | 263,401 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,299 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,240 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,592 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,282 |
| Countries by Official Language | 0 | - | 4.95 | 194,932 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,948 |
| Countries in their Native Language | 0 | - | 4.99 | 198,455 |
| Independence from Whom | 0 | - | 4.99 | 211,710 |
| Subdivisions by Country | 0 | - | 4.86 | 50,360 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,982 |
| Megadiverse Countries | 0 | - | 4.96 | 134,880 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,795 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,257 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,846 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,059 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,912 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,480 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,217 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,936 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,565 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,041 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,341 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,794 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,093 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,416 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,666 |
| World Map Quiz | 0 | - | 4.81 | 64,860 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,406 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,196 |
| Countries by Founding Story | 0 | - | 4.95 | 77,220 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,782 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,094 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,830 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,774 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,723 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,853 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,110 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,352 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,432 |
| Widest Countries East to West | 0 | - | 4.92 | 129,505 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,416 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,162 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,062 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,641 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,412 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,703 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,311 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,764 |
| Countries with Double Letters | 0 | - | 4.97 | 95,399 |
| Countries that End in N | 0 | - | 4.95 | 170,434 |
| Countries with Five Letters | 0 | - | 4.96 | 281,377 |
| Countries with Six Letters | 0 | - | 4.94 | 212,845 |
| Countries with W | 0 | - | 4.97 | 159,731 |
| Countries with Z | 0 | - | 4.98 | 290,651 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,996 |
| Countries That End in U | 0 | - | 4.95 | 120,528 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,015 |
| Countries that End in O | 0 | - | 4.92 | 159,293 |
| Countries that End in R | 0 | - | 4.87 | 118,810 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,582 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,627 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,339 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,226 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,843 |
| Countries That End in Y | 0 | - | 4.91 | 185,731 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,542 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,628 |
| Countries that End in I | 0 | - | 4.94 | 134,961 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,741 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,673 |
| Countries That End in NIA | 0 | - | 4.92 | 109,633 |
| Countries That End in BIA | 0 | - | 4.93 | 148,988 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,887 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,214 |
| Countries That End in RIA | 0 | - | 4.93 | 126,654 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,785 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,121 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,430 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,816 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,348 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,424 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,808 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,362 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,306 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,289 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,014 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,733 |
| Countries that End in L | 0 | - | 4.94 | 156,666 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,826 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,195 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,915 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,829 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,882 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,431 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,408 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,813 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,347 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,848 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,727 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,019 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,643 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,767 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,684 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,335 |
| One Border Countries | 0 | - | 4.98 | 468,613 |
| Five Highest HDI Countries by Continent | 0 | - | 4.52 | 58,389 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,967 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,623,229 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,722 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,805 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,907 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,393 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,535 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,085 |
| Countries by National Anthem | 0 | - | 4.93 | 71,242 |
| NATO Countries | 0 | - | 4.98 | 280,408 |
| EU Countries Quiz | 0 | - | 4.99 | 274,232 |
| Recently Independent Countries | 0 | - | 4.98 | 159,244 |
| French-Speaking Countries | 0 | - | 4.85 | 270,509 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,825 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,041 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,368 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,197 |
| German-Speaking Countries | 0 | - | 4.92 | 145,557 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,818 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,169 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,740 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,501 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,376 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,635 |
