| Landlocked Countries | 0 | - | 4.99 | 418,968 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,336,115 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,008 |
| Himalayan Countries | 0 | - | 4.94 | 137,439 |
| Andean Countries | 0 | - | 4.95 | 83,946 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,235 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,667 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,839 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,356 |
| Danube Countries | 0 | - | 4.97 | 71,667 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,559 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,058 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,660 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,738 |
| European Landlocked Countries | 0 | - | 4.99 | 146,779 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,143 |
| Countries with the Most Species | 0 | - | 4.99 | 102,911 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,274 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,433 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,589 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,305 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,994 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,368 |
| Countries in the Alps | 0 | - | 4.87 | 117,694 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,136 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,370 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,425 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,988 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,098 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,598 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,288 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,191 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,970 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,557 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,480 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,339 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,927 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,190 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,209 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,194 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,064 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,574 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,533 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,390 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,233 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,001 |
| Largest Countries By Category | 0 | - | 4.97 | 157,644 |
| Countries by Countries | 0 | - | 4.96 | 62,842 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,214 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,161 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,469 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,325 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,048 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,023 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,614 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,118 |
| Island Countries | 0 | - | 4.99 | 709,766 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,073 |
| Northernmost Countries | 0 | - | 4.99 | 360,482 |
| Countries of South America | 0 | - | 5.00 | 922,934 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,082 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,430 |
| "Land" Countries | 0 | - | 4.98 | 335,802 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,764 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,029 |
| Countries with Megacities | 0 | - | 4.99 | 260,114 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,903 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,997 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,178 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,008 |
| Countries by Official Language | 0 | - | 4.95 | 194,645 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,540 |
| Countries in their Native Language | 0 | - | 4.99 | 198,189 |
| Independence from Whom | 0 | - | 4.99 | 211,322 |
| Subdivisions by Country | 0 | - | 4.86 | 50,287 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,710 |
| Megadiverse Countries | 0 | - | 4.96 | 134,769 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,548 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,186 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,756 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,018 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,715 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,381 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,981 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,846 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,490 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,990 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,983 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,719 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,995 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,776 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,157 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,327 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,201 |
| World Map Quiz | 0 | - | 4.81 | 64,522 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,619 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,034 |
| Countries by Founding Story | 0 | - | 4.95 | 77,072 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,510 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,928 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,640 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,331 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,519 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,673 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,831 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,263 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,286 |
| Widest Countries East to West | 0 | - | 4.92 | 129,378 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,382 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,965 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,994 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,512 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,223 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,551 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,234 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,728 |
| Countries with Double Letters | 0 | - | 4.97 | 95,097 |
| Countries that End in N | 0 | - | 4.95 | 170,001 |
| Countries with Five Letters | 0 | - | 4.96 | 280,248 |
| Countries with Six Letters | 0 | - | 4.94 | 212,488 |
| Countries with W | 0 | - | 4.97 | 159,523 |
| Countries with Z | 0 | - | 4.98 | 289,810 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,753 |
| Countries That End in U | 0 | - | 4.95 | 120,415 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,757 |
| Countries that End in O | 0 | - | 4.92 | 159,199 |
| Countries that End in R | 0 | - | 4.87 | 118,735 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,515 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,337 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,111 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,087 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,669 |
| Countries That End in Y | 0 | - | 4.90 | 185,648 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,230 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,429 |
| Countries that End in I | 0 | - | 4.94 | 134,871 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,084 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,580 |
| Countries That End in NIA | 0 | - | 4.92 | 109,517 |
| Countries That End in BIA | 0 | - | 4.93 | 148,845 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,722 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,064 |
| Countries That End in RIA | 0 | - | 4.93 | 126,542 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,634 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,712 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,232 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,589 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,120 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,329 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,690 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,245 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,129 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,198 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,829 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,538 |
| Countries that End in L | 0 | - | 4.94 | 156,542 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,035 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,156 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,840 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,725 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,785 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,785 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,170 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,628 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,132 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,618 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,584 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,958 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,600 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,669 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,315 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,754 |
| One Border Countries | 0 | - | 4.98 | 467,699 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,822,746 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,615,118 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,558 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,437 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,687 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,275 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,373 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,933 |
| Countries by National Anthem | 0 | - | 4.93 | 71,184 |
| NATO Countries | 0 | - | 4.98 | 279,369 |
| EU Countries Quiz | 0 | - | 4.99 | 272,958 |
| Recently Independent Countries | 0 | - | 4.98 | 159,019 |
| French-Speaking Countries | 0 | - | 4.85 | 270,217 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,761 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,583 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,499 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,965 |
| German-Speaking Countries | 0 | - | 4.91 | 145,337 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,303 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,913 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,124 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,795 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,829 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,370 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,608 |
| Olympic Host Countries | 0 | - | 4.98 | 200,403 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,634 |
