| Landlocked Countries | 0 | - | 4.99 | 421,662 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,558,217 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,294 |
| Himalayan Countries | 0 | - | 4.95 | 138,585 |
| Andean Countries | 0 | - | 4.93 | 84,527 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,716 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,715 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,350 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,742 |
| Danube Countries | 0 | - | 4.97 | 71,968 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,967 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,384 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,235 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,717 |
| European Landlocked Countries | 0 | - | 4.99 | 147,095 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,576 |
| Countries with the Most Species | 0 | - | 4.99 | 103,203 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,709 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,570 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,706 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,519 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,201 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,623 |
| Countries in the Alps | 0 | - | 4.87 | 118,156 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,900 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,982 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,624 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,567 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,461 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,923 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,634 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,462 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,158 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,813 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,636 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,494 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,191 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,438 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,490 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,826 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,284 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,262 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,022 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,765 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,006 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,195 |
| Largest Countries By Category | 0 | - | 4.97 | 158,160 |
| Countries by Countries | 0 | - | 4.96 | 63,165 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,641 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,270 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,554 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,644 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,776,519 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,308 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,428 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,999 |
| Island Countries | 0 | - | 4.99 | 710,924 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,467 |
| Northernmost Countries | 0 | - | 4.99 | 361,806 |
| Countries of South America | 0 | - | 5.00 | 926,926 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,317 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,330 |
| "Land" Countries | 0 | - | 4.98 | 337,244 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,797 |
| Countries with Megacities | 0 | - | 4.99 | 264,376 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,662 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,422 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,928 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,491 |
| Countries by Official Language | 0 | - | 4.95 | 195,200 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,279 |
| Countries in their Native Language | 0 | - | 4.99 | 198,985 |
| Independence from Whom | 0 | - | 4.99 | 212,017 |
| Subdivisions by Country | 0 | - | 4.86 | 50,420 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,673 |
| Megadiverse Countries | 0 | - | 4.96 | 134,981 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,028 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,332 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,215 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,093 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,079 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,578 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,420 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,008 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,630 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,128 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,621 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,856 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,182 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,946 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,334 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,475 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,884 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,099 |
| World Map Quiz | 0 | - | 4.81 | 65,042 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,119 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,321 |
| Countries by Founding Story | 0 | - | 4.95 | 77,342 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,017 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,242 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,961 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,119 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,852 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,981 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,269 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,421 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,550 |
| Widest Countries East to West | 0 | - | 4.92 | 129,618 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,441 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,341 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,109 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,749 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,558 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,832 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,364 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,795 |
| Countries with Double Letters | 0 | - | 4.96 | 96,156 |
| Countries that End in N | 0 | - | 4.95 | 171,035 |
| Countries with Five Letters | 0 | - | 4.96 | 282,280 |
| Countries with Six Letters | 0 | - | 4.94 | 213,463 |
| Countries with W | 0 | - | 4.97 | 160,266 |
| Countries with Z | 0 | - | 4.98 | 291,351 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,630 |
| Countries That End in U | 0 | - | 4.95 | 120,816 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,392 |
| Countries that End in O | 0 | - | 4.92 | 159,486 |
| Countries that End in R | 0 | - | 4.87 | 118,947 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,703 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,002 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,642 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,437 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,355 |
| Countries That End in Y | 0 | - | 4.91 | 185,854 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,851 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,812 |
| Countries that End in I | 0 | - | 4.94 | 135,063 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,025 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,793 |
| Countries That End in NIA | 0 | - | 4.92 | 109,753 |
| Countries That End in BIA | 0 | - | 4.93 | 149,160 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,063 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,391 |
| Countries That End in RIA | 0 | - | 4.93 | 126,782 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,982 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,509 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,651 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,055 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,612 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,554 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,987 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,432 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,489 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,395 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,241 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,941 |
| Countries that End in L | 0 | - | 4.94 | 156,799 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,567 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,253 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,998 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,924 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,969 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,678 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,608 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,945 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,497 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,385 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,833 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,081 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,695 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,850 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,673 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,851 |
| One Border Countries | 0 | - | 4.98 | 469,696 |
| Top Producing Countries | 0 | - | 4.63 | 116,254 |
| ISO Country Codes | 0 | - | 4.48 | 91,172 |
| Countries on the Equator | 0 | - | 4.63 | 140,815 |
| Members of the Arab League | 0 | - | 4.77 | 75,636 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,907 |
| Separatist Movements | 0 | - | 4.45 | 45,901 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,252 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,827 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,271 |
| Westernmost Countries | 0 | - | 4.43 | 62,402 |
| Easternmost Countries | 0 | - | 4.75 | 62,963 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,660 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,643 |
| Indochina Countries | 0 | - | 4.74 | 66,190 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,632 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,359 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,981 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,096 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,393 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,697 |
| Countries that are the Source of Refugees | 0 | - | 4.72 | 64,208 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,955 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,448 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,715 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,591 |
| Flyover Countries | 0 | - | 4.69 | 50,816 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,966 |
