| Landlocked Countries | 0 | - | 4.99 | 421,938 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,580,226 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,430 |
| Himalayan Countries | 0 | - | 4.94 | 138,706 |
| Andean Countries | 0 | - | 4.93 | 84,598 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,794 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,805 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,417 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,801 |
| Danube Countries | 0 | - | 4.97 | 72,003 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,010 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,420 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,299 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,775 |
| European Landlocked Countries | 0 | - | 4.99 | 147,140 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,636 |
| Countries with the Most Species | 0 | - | 4.99 | 103,243 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,757 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,591 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,721 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,541 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,225 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,658 |
| Countries in the Alps | 0 | - | 4.87 | 118,199 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,103 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,032 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,639 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,596 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,507 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,945 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,671 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,487 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,176 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,843 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,650 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,524 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,219 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,464 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,519 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,900 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,307 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,755 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,069 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,922 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,097 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,229 |
| Largest Countries By Category | 0 | - | 4.97 | 158,205 |
| Countries by Countries | 0 | - | 4.96 | 63,219 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,681 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,284 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,565 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,673 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,387 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,549 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,490 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,216 |
| Island Countries | 0 | - | 4.99 | 711,038 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,821 |
| Northernmost Countries | 0 | - | 4.99 | 361,949 |
| Countries of South America | 0 | - | 5.00 | 927,291 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,783 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,172 |
| "Land" Countries | 0 | - | 4.98 | 337,326 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,880 |
| Countries with Megacities | 0 | - | 4.99 | 264,533 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,735 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,465 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,991 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,536 |
| Countries by Official Language | 0 | - | 4.95 | 195,239 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,366 |
| Countries in their Native Language | 0 | - | 4.99 | 199,036 |
| Independence from Whom | 0 | - | 4.99 | 212,085 |
| Subdivisions by Country | 0 | - | 4.86 | 50,430 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,720 |
| Megadiverse Countries | 0 | - | 4.96 | 135,007 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,080 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,346 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,233 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,099 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,134 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,595 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,463 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,030 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,654 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,145 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,663 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,878 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,200 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,962 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,346 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,494 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,612 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,174 |
| World Map Quiz | 0 | - | 4.81 | 65,080 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,271 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,345 |
| Countries by Founding Story | 0 | - | 4.95 | 77,363 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,088 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,275 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,994 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,181 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,884 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,005 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,297 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,437 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,569 |
| Widest Countries East to West | 0 | - | 4.92 | 129,640 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,456 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,372 |
| 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 | 94,766 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,596 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,868 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,371 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,796 |
| Countries with Double Letters | 0 | - | 4.96 | 96,227 |
| Countries that End in N | 0 | - | 4.95 | 171,106 |
| Countries with Five Letters | 0 | - | 4.96 | 282,432 |
| Countries with Six Letters | 0 | - | 4.94 | 213,537 |
| Countries with W | 0 | - | 4.97 | 160,313 |
| Countries with Z | 0 | - | 4.98 | 291,423 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,688 |
| Countries That End in U | 0 | - | 4.95 | 120,847 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,446 |
| Countries that End in O | 0 | - | 4.92 | 159,504 |
| Countries that End in R | 0 | - | 4.87 | 118,962 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,725 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,066 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,685 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,466 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,389 |
| Countries That End in Y | 0 | - | 4.91 | 185,865 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,901 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,844 |
| Countries that End in I | 0 | - | 4.94 | 135,086 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,087 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,818 |
| Countries That End in NIA | 0 | - | 4.92 | 109,778 |
| Countries That End in BIA | 0 | - | 4.93 | 149,187 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,113 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,417 |
| Countries That End in RIA | 0 | - | 4.93 | 126,800 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,012 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,578 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,686 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,101 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,662 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,569 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,016 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,439 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,514 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,408 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,273 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,970 |
| Countries that End in L | 0 | - | 4.94 | 156,833 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,699 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,261 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,013 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,945 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,991 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,729 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,637 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,982 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,525 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,417 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,849 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,098 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,703 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,868 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,118 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,962 |
| One Border Countries | 0 | - | 4.98 | 469,855 |
| Top Producing Countries | 0 | - | 4.63 | 116,261 |
| ISO Country Codes | 0 | - | 4.48 | 91,267 |
| Countries on the Equator | 0 | - | 4.63 | 140,829 |
| Members of the Arab League | 0 | - | 4.77 | 75,642 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,914 |
| Separatist Movements | 0 | - | 4.45 | 45,910 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,282 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,831 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,284 |
| Westernmost Countries | 0 | - | 4.43 | 62,418 |
| Easternmost Countries | 0 | - | 4.75 | 62,974 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,664 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,676 |
| Indochina Countries | 0 | - | 4.74 | 66,206 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,643 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,368 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,982 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,103 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,405 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,708 |
| Countries that are the Source of Refugees | 0 | - | 4.72 | 65,995 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,960 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,467 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,726 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,608 |
| Flyover Countries | 0 | - | 4.69 | 50,834 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 74,000 |
