| Landlocked Countries | 0 | - | 4.99 | 421,246 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,524,156 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,092 |
| Himalayan Countries | 0 | - | 4.95 | 138,398 |
| Andean Countries | 0 | - | 4.93 | 84,421 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,637 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,575 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,264 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,667 |
| Danube Countries | 0 | - | 4.97 | 71,921 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,905 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,333 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,143 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,603 |
| European Landlocked Countries | 0 | - | 4.99 | 147,056 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,501 |
| Countries with the Most Species | 0 | - | 4.99 | 103,162 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,653 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,544 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,686 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,488 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,169 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,582 |
| Countries in the Alps | 0 | - | 4.87 | 118,080 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,561 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,890 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,599 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,525 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,411 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,890 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,573 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,428 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,132 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,777 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,605 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,467 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,145 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,404 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,443 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,717 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,240 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 60,848 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,936 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,566 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,886 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,164 |
| Largest Countries By Category | 0 | - | 4.97 | 158,070 |
| Countries by Countries | 0 | - | 4.96 | 63,109 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,583 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,251 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,540 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,597 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,773,257 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,959 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,306 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,759 |
| Island Countries | 0 | - | 4.99 | 710,767 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,901 |
| Northernmost Countries | 0 | - | 4.99 | 361,625 |
| Countries of South America | 0 | - | 5.00 | 926,228 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,473 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,874,820 |
| "Land" Countries | 0 | - | 4.98 | 337,093 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,702 |
| Countries with Megacities | 0 | - | 4.99 | 264,083 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,540 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,376 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,806 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,430 |
| Countries by Official Language | 0 | - | 4.95 | 195,095 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,167 |
| Countries in their Native Language | 0 | - | 4.99 | 198,812 |
| Independence from Whom | 0 | - | 4.99 | 211,917 |
| Subdivisions by Country | 0 | - | 4.86 | 50,396 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,602 |
| Megadiverse Countries | 0 | - | 4.96 | 134,950 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,948 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,307 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,882 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,083 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,018 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,554 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,358 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,986 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,606 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,056 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,529 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,837 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,152 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,922 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,306 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,455 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,782 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,970 |
| World Map Quiz | 0 | - | 4.81 | 64,990 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,876 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,274 |
| Countries by Founding Story | 0 | - | 4.95 | 77,302 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,948 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,190 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,913 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,010 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,813 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,940 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,243 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,400 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,517 |
| Widest Countries East to West | 0 | - | 4.92 | 129,578 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,434 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,293 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,096 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,716 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,506 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,783 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,341 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,785 |
| Countries with Double Letters | 0 | - | 4.96 | 96,033 |
| Countries that End in N | 0 | - | 4.95 | 170,922 |
| Countries with Five Letters | 0 | - | 4.96 | 282,082 |
| Countries with Six Letters | 0 | - | 4.94 | 213,339 |
| Countries with W | 0 | - | 4.97 | 160,169 |
| Countries with Z | 0 | - | 4.98 | 291,222 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,534 |
| Countries That End in U | 0 | - | 4.95 | 120,759 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,302 |
| Countries that End in O | 0 | - | 4.92 | 159,453 |
| Countries that End in R | 0 | - | 4.87 | 118,918 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,678 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,905 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,586 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,398 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,312 |
| Countries That End in Y | 0 | - | 4.91 | 185,825 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,785 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,750 |
| Countries that End in I | 0 | - | 4.94 | 135,043 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,956 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,763 |
| Countries That End in NIA | 0 | - | 4.92 | 109,716 |
| Countries That End in BIA | 0 | - | 4.93 | 149,118 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,012 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,344 |
| Countries That End in RIA | 0 | - | 4.93 | 126,755 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,934 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,363 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,574 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,966 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,544 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,529 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,941 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,422 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,448 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,370 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,184 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,873 |
| Countries that End in L | 0 | - | 4.94 | 156,760 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,317 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,241 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,960 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,897 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,928 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,600 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,556 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,909 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,442 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,315 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,804 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,057 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,679 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,818 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,980 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,674 |
| One Border Countries | 0 | - | 4.98 | 469,371 |
| Top Producing Countries | 0 | - | 4.63 | 116,237 |
| ISO Country Codes | 0 | - | 4.48 | 90,994 |
| Countries on the Equator | 0 | - | 4.63 | 140,787 |
| Members of the Arab League | 0 | - | 4.77 | 75,623 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,889 |
| Separatist Movements | 0 | - | 4.45 | 45,888 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,217 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,815 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,253 |
| Westernmost Countries | 0 | - | 4.42 | 62,359 |
| Easternmost Countries | 0 | - | 4.75 | 62,894 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,649 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,603 |
| Indochina Countries | 0 | - | 4.74 | 66,172 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,625 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,347 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,976 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,091 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,386 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,683 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 61,936 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,943 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,426 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,696 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,573 |
| Flyover Countries | 0 | - | 4.69 | 50,806 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,926 |
