| Landlocked Countries | 0 | - | 4.99 | 421,781 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,569,324 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,359 |
| Himalayan Countries | 0 | - | 4.95 | 138,637 |
| Andean Countries | 0 | - | 4.93 | 84,564 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,752 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,754 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,384 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,773 |
| Danube Countries | 0 | - | 4.97 | 71,987 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,991 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,404 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,265 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,742 |
| European Landlocked Countries | 0 | - | 4.99 | 147,125 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,604 |
| Countries with the Most Species | 0 | - | 4.99 | 103,223 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,729 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,576 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,714 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,526 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,211 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,638 |
| Countries in the Alps | 0 | - | 4.87 | 118,183 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,994 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,003 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,631 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,583 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,489 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,936 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,657 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,471 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,169 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,827 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,642 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,509 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,208 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,452 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,501 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,855 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,292 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,530 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,051 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,838 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,051 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,211 |
| Largest Countries By Category | 0 | - | 4.97 | 158,187 |
| Countries by Countries | 0 | - | 4.96 | 63,198 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,660 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,278 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,560 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,663 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,777,563 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,444 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,459 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,094 |
| Island Countries | 0 | - | 4.99 | 710,980 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,653 |
| Northernmost Countries | 0 | - | 4.99 | 361,883 |
| Countries of South America | 0 | - | 5.00 | 927,155 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,600 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,774 |
| "Land" Countries | 0 | - | 4.98 | 337,284 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,836 |
| Countries with Megacities | 0 | - | 4.99 | 264,446 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,702 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,447 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,959 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,513 |
| Countries by Official Language | 0 | - | 4.95 | 195,217 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,318 |
| Countries in their Native Language | 0 | - | 4.99 | 199,009 |
| Independence from Whom | 0 | - | 4.99 | 212,052 |
| Subdivisions by Country | 0 | - | 4.86 | 50,423 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,694 |
| Megadiverse Countries | 0 | - | 4.96 | 134,999 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,054 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,339 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,228 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,096 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,108 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,583 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,442 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,019 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,639 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,137 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,652 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,866 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,195 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,951 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,341 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,482 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,212 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,136 |
| World Map Quiz | 0 | - | 4.81 | 65,056 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,208 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,339 |
| Countries by Founding Story | 0 | - | 4.95 | 77,353 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,050 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,262 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,979 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,150 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,872 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,994 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,283 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,433 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,561 |
| Widest Countries East to West | 0 | - | 4.92 | 129,628 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,448 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,357 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,114 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,758 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,578 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,852 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,368 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,795 |
| Countries with Double Letters | 0 | - | 4.96 | 96,193 |
| Countries that End in N | 0 | - | 4.95 | 171,067 |
| Countries with Five Letters | 0 | - | 4.96 | 282,360 |
| Countries with Six Letters | 0 | - | 4.94 | 213,496 |
| Countries with W | 0 | - | 4.97 | 160,292 |
| Countries with Z | 0 | - | 4.98 | 291,391 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,655 |
| Countries That End in U | 0 | - | 4.95 | 120,826 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,416 |
| Countries that End in O | 0 | - | 4.92 | 159,495 |
| Countries that End in R | 0 | - | 4.87 | 118,953 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,712 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,038 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,663 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,453 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,368 |
| Countries That End in Y | 0 | - | 4.91 | 185,859 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,879 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,827 |
| Countries that End in I | 0 | - | 4.94 | 135,075 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,054 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,808 |
| Countries That End in NIA | 0 | - | 4.92 | 109,767 |
| Countries That End in BIA | 0 | - | 4.93 | 149,172 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,084 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,402 |
| Countries That End in RIA | 0 | - | 4.93 | 126,795 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,996 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,532 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,667 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,074 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,630 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,562 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,999 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,436 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,505 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,405 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,261 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,960 |
| Countries that End in L | 0 | - | 4.94 | 156,818 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,633 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,257 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,006 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,941 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,977 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,703 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,627 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,966 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,512 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,397 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,842 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,088 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,699 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,861 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,897 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,898 |
| One Border Countries | 0 | - | 4.98 | 469,776 |
| Top Producing Countries | 0 | - | 4.63 | 116,257 |
| ISO Country Codes | 0 | - | 4.48 | 91,215 |
| Countries on the Equator | 0 | - | 4.63 | 140,818 |
| Members of the Arab League | 0 | - | 4.77 | 75,641 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,910 |
| Separatist Movements | 0 | - | 4.45 | 45,909 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,268 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,829 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,278 |
| Westernmost Countries | 0 | - | 4.43 | 62,410 |
| Easternmost Countries | 0 | - | 4.75 | 62,971 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,661 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,667 |
| Indochina Countries | 0 | - | 4.74 | 66,195 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,636 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,364 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,982 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,096 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,399 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,701 |
| Countries that are the Source of Refugees | 0 | - | 4.72 | 64,491 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,958 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,457 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,723 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,595 |
| Flyover Countries | 0 | - | 4.69 | 50,826 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,983 |
