| Landlocked Countries | 0 | - | 4.99 | 421,864 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,575,026 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,390 |
| Himalayan Countries | 0 | - | 4.95 | 138,668 |
| Andean Countries | 0 | - | 4.93 | 84,579 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,774 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,778 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,403 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,790 |
| Danube Countries | 0 | - | 4.97 | 71,998 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,002 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,417 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,278 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,762 |
| European Landlocked Countries | 0 | - | 4.99 | 147,137 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,622 |
| Countries with the Most Species | 0 | - | 4.99 | 103,235 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,747 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,583 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,719 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,537 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,218 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,650 |
| Countries in the Alps | 0 | - | 4.87 | 118,192 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,052 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,014 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,636 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,590 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,500 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,943 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,664 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,481 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,174 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,832 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,647 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,517 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,216 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,461 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,509 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,882 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,301 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,649 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,056 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,880 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,072 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,218 |
| Largest Countries By Category | 0 | - | 4.97 | 158,196 |
| Countries by Countries | 0 | - | 4.96 | 63,212 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,669 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,282 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,564 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,671 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,777,982 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,497 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,475 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,138 |
| Island Countries | 0 | - | 4.99 | 711,012 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,743 |
| Northernmost Countries | 0 | - | 4.99 | 361,917 |
| Countries of South America | 0 | - | 5.00 | 927,230 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,690 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,937 |
| "Land" Countries | 0 | - | 4.98 | 337,310 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,861 |
| Countries with Megacities | 0 | - | 4.99 | 264,483 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,714 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,457 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,977 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,520 |
| Countries by Official Language | 0 | - | 4.95 | 195,231 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,337 |
| Countries in their Native Language | 0 | - | 4.99 | 199,025 |
| Independence from Whom | 0 | - | 4.99 | 212,068 |
| Subdivisions by Country | 0 | - | 4.86 | 50,428 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,712 |
| Megadiverse Countries | 0 | - | 4.96 | 135,003 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,064 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,345 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,231 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,097 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,130 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,591 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,456 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,026 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,649 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,144 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,654 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,871 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,196 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,957 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,343 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,486 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,420 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,150 |
| World Map Quiz | 0 | - | 4.81 | 65,064 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,241 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,343 |
| Countries by Founding Story | 0 | - | 4.95 | 77,357 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,069 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,267 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,988 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,165 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,880 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,002 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,291 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,435 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,563 |
| Widest Countries East to West | 0 | - | 4.92 | 129,630 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,450 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,365 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,117 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,763 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,590 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,858 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,370 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,796 |
| Countries with Double Letters | 0 | - | 4.96 | 96,213 |
| Countries that End in N | 0 | - | 4.95 | 171,088 |
| Countries with Five Letters | 0 | - | 4.96 | 282,397 |
| Countries with Six Letters | 0 | - | 4.94 | 213,512 |
| Countries with W | 0 | - | 4.97 | 160,303 |
| Countries with Z | 0 | - | 4.98 | 291,410 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,674 |
| Countries That End in U | 0 | - | 4.95 | 120,837 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,435 |
| Countries that End in O | 0 | - | 4.92 | 159,499 |
| Countries that End in R | 0 | - | 4.87 | 118,959 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,718 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,052 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,677 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,459 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,377 |
| Countries That End in Y | 0 | - | 4.91 | 185,860 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,888 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,837 |
| Countries that End in I | 0 | - | 4.94 | 135,082 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,074 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,813 |
| Countries That End in NIA | 0 | - | 4.92 | 109,772 |
| Countries That End in BIA | 0 | - | 4.93 | 149,180 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,104 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,405 |
| Countries That End in RIA | 0 | - | 4.93 | 126,797 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,007 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,560 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,679 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,088 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,644 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,566 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,006 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,437 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,510 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,406 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,267 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,964 |
| Countries that End in L | 0 | - | 4.94 | 156,822 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,673 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,258 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,009 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,943 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,985 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,717 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,630 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,979 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,519 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,409 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,847 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,092 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,702 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,865 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,020 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,934 |
| One Border Countries | 0 | - | 4.98 | 469,817 |
| Top Producing Countries | 0 | - | 4.63 | 116,260 |
| ISO Country Codes | 0 | - | 4.48 | 91,241 |
| Countries on the Equator | 0 | - | 4.63 | 140,825 |
| Members of the Arab League | 0 | - | 4.77 | 75,642 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,911 |
| Separatist Movements | 0 | - | 4.45 | 45,910 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,275 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,830 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,282 |
| Westernmost Countries | 0 | - | 4.43 | 62,415 |
| Easternmost Countries | 0 | - | 4.75 | 62,974 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,663 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,671 |
| Indochina Countries | 0 | - | 4.74 | 66,204 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,639 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,367 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,982 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,099 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,403 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,706 |
| Countries that are the Source of Refugees | 0 | - | 4.72 | 64,604 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,959 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,463 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,723 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,599 |
| Flyover Countries | 0 | - | 4.69 | 50,832 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,991 |
