| Landlocked Countries | 0 | - | 4.99 | 417,450 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,229,003 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,302 |
| Himalayan Countries | 0 | - | 4.95 | 136,819 |
| Andean Countries | 0 | - | 4.95 | 83,639 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,890 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,215 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,563 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,157 |
| Danube Countries | 0 | - | 4.97 | 71,507 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,337 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,924 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,345 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,385 |
| European Landlocked Countries | 0 | - | 4.99 | 146,219 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,913 |
| Countries with the Most Species | 0 | - | 4.99 | 102,521 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,038 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,364 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,541 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,212 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,872 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,253 |
| Countries in the Alps | 0 | - | 4.86 | 117,463 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,985 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,084 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,323 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,829 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,926 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,338 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,097 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,060 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,875 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,414 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,413 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,254 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,807 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,073 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,083 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,887 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,955 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,484 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,334 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,525 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,830 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,888 |
| Largest Countries By Category | 0 | - | 4.97 | 157,397 |
| Countries by Countries | 0 | - | 4.96 | 62,693 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,989 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,114 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,433 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,178 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,747,057 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,747 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,190 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,352 |
| Island Countries | 0 | - | 4.99 | 709,178 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,432 |
| Northernmost Countries | 0 | - | 4.99 | 359,829 |
| Countries of South America | 0 | - | 5.00 | 920,871 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,599 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,861,666 |
| "Land" Countries | 0 | - | 4.98 | 335,325 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,554 |
| Countries with Megacities | 0 | - | 4.99 | 249,536 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,402 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,714 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,738 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,676 |
| Countries by Official Language | 0 | - | 4.95 | 194,333 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,154 |
| Countries in their Native Language | 0 | - | 4.99 | 197,918 |
| Independence from Whom | 0 | - | 4.99 | 211,026 |
| Subdivisions by Country | 0 | - | 4.86 | 50,235 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,488 |
| Megadiverse Countries | 0 | - | 4.96 | 134,649 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,063 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,123 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,679 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,971 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,539 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,286 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,743 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,662 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,417 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,824 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,540 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,632 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,733 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,693 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,912 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,255 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,527 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,803 |
| World Map Quiz | 0 | - | 4.81 | 64,257 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,836 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,828 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,229 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,767 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,495 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,958 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,377 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,546 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,706 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,192 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,178 |
| Widest Countries East to West | 0 | - | 4.92 | 129,245 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,345 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,770 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,953 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,272 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,066 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,437 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,166 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,696 |
| Countries with Double Letters | 0 | - | 4.97 | 94,716 |
| Countries that End in N | 0 | - | 4.95 | 169,023 |
| Countries with Five Letters | 0 | - | 4.96 | 275,505 |
| Countries with Six Letters | 0 | - | 4.94 | 212,004 |
| Countries with W | 0 | - | 4.97 | 159,239 |
| Countries with Z | 0 | - | 4.98 | 289,381 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,443 |
| Countries That End in U | 0 | - | 4.95 | 120,252 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,463 |
| Countries that End in O | 0 | - | 4.92 | 159,070 |
| Countries that End in R | 0 | - | 4.87 | 118,637 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,405 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,029 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,923 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,943 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,530 |
| Countries That End in Y | 0 | - | 4.90 | 185,545 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,019 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,237 |
| Countries that End in I | 0 | - | 4.94 | 134,756 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,842 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,481 |
| Countries That End in NIA | 0 | - | 4.92 | 109,394 |
| Countries That End in BIA | 0 | - | 4.93 | 148,680 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,552 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,901 |
| Countries That End in RIA | 0 | - | 4.93 | 126,418 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,485 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,318 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,005 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,331 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,956 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,228 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,557 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,087 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,967 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,110 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,660 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,347 |
| Countries that End in L | 0 | - | 4.94 | 156,411 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,407 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,124 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,764 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,629 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,683 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,478 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,923 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,463 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,915 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,380 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,114 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,894 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,317 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,550 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,568 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,240 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,191 |
| One Border Countries | 0 | - | 4.98 | 466,916 |
| Top Producing Countries | 0 | - | 4.63 | 116,071 |
| ISO Country Codes | 0 | - | 4.45 | 82,305 |
| Countries on the Equator | 0 | - | 4.63 | 140,565 |
| Members of the Arab League | 0 | - | 4.77 | 75,550 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,717 |
| Separatist Movements | 0 | - | 4.44 | 45,766 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,920 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,710 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,094 |
| Westernmost Countries | 0 | - | 4.50 | 49,488 |
| Easternmost Countries | 0 | - | 4.75 | 62,760 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,565 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,254 |
| Indochina Countries | 0 | - | 4.74 | 66,060 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,568 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,192 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,931 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,030 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,294 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,554 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,729 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,829 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,196 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,556 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,407 |
| Flyover Countries | 0 | - | 4.68 | 50,682 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,653 |
