| Landlocked Countries | 0 | - | 4.99 | 424,442 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,776,610 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,598 |
| Himalayan Countries | 0 | - | 4.94 | 139,746 |
| Andean Countries | 0 | - | 4.94 | 85,172 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,355 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,610 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,921 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,213 |
| Danube Countries | 0 | - | 4.97 | 72,265 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,402 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,695 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,845 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,343 |
| European Landlocked Countries | 0 | - | 4.99 | 147,448 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,074 |
| Countries with the Most Species | 0 | - | 4.99 | 103,474 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,215 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,709 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,819 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,738 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,472 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,899 |
| Countries in the Alps | 0 | - | 4.87 | 118,574 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,289 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,585 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,859 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,880 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,801 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,131 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,136 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,743 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,333 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,056 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,788 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,658 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,445 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,676 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,768 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,504 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,515 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,510 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,479 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,176 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,823 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,424 |
| Largest Countries By Category | 0 | - | 4.97 | 158,641 |
| Countries by Countries | 0 | - | 4.96 | 63,506 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,086 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,361 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,644 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,975 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,795,883 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,107 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,431 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,294 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,199 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,291 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,915 |
| Island Countries | 0 | - | 4.99 | 712,044 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,215 |
| Northernmost Countries | 0 | - | 4.99 | 363,385 |
| Countries of South America | 0 | - | 5.00 | 930,823 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,188 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,244 |
| "Land" Countries | 0 | - | 4.98 | 338,048 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,594 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,787 |
| Countries with Megacities | 0 | - | 4.99 | 266,360 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,494 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,900 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,787 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,010 |
| Countries by Official Language | 0 | - | 4.95 | 195,763 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,293 |
| Countries in their Native Language | 0 | - | 4.99 | 199,548 |
| Independence from Whom | 0 | - | 4.99 | 212,748 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,215 |
| Megadiverse Countries | 0 | - | 4.96 | 135,192 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,759 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,481 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,382 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,180 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,437 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,754 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,902 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,503 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,775 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,222 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,200 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,308 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,374 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,097 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,514 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,631 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,012 |
| World Map Quiz | 0 | - | 4.81 | 65,446 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,594 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,579 |
| Countries by Founding Story | 0 | - | 4.95 | 77,670 |
| Countries by Road Signs | 0 | - | 4.98 | 54,251 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,983 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,940 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,427 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,219 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,285 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,405 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,596 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,618 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,079 |
| Widest Countries East to West | 0 | - | 4.92 | 130,307 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,558 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,104 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,467 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,978 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,860 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,358 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,467 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,863 |
| Countries with Double Letters | 0 | - | 4.96 | 96,798 |
| Countries that End in N | 0 | - | 4.95 | 171,685 |
| Countries with Five Letters | 0 | - | 4.96 | 283,387 |
| Countries with Six Letters | 0 | - | 4.94 | 214,153 |
| Countries with W | 0 | - | 4.96 | 160,744 |
| Countries with Z | 0 | - | 4.98 | 292,123 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,093 |
| Countries That End in U | 0 | - | 4.95 | 121,075 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,899 |
| Countries that End in O | 0 | - | 4.92 | 159,724 |
| Countries that End in R | 0 | - | 4.87 | 119,112 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,860 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,583 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,004 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,714 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,644 |
| Countries That End in Y | 0 | - | 4.91 | 186,026 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,286 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,140 |
| Countries that End in I | 0 | - | 4.94 | 135,255 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,457 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,976 |
| Countries That End in NIA | 0 | - | 4.92 | 109,960 |
| Countries That End in BIA | 0 | - | 4.93 | 149,461 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,394 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,666 |
| Countries That End in RIA | 0 | - | 4.93 | 126,978 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,265 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,265 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,026 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,461 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,029 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,733 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,230 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,508 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,780 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,580 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,586 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,266 |
| Countries that End in L | 0 | - | 4.94 | 157,035 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,984 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,316 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,703 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,430 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,238 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,218 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,000 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,340 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,131 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,812 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,114 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,191 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,781 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,157 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,170 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,994 |
| One Border Countries | 0 | - | 4.98 | 471,300 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,844,051 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,646,724 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,198 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,761 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,511 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,799 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,082 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,483 |
| Countries by National Anthem | 0 | - | 4.92 | 71,375 |
| NATO Countries | 0 | - | 4.98 | 282,811 |
| EU Countries Quiz | 0 | - | 4.99 | 277,082 |
| Recently Independent Countries | 0 | - | 4.98 | 159,794 |
| French-Speaking Countries | 0 | - | 4.85 | 271,437 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,004 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,405 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,682 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,112 |
| German-Speaking Countries | 0 | - | 4.92 | 145,940 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,164 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,443 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,529 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,983 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,869 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,669 |
