| Landlocked Countries | 0 | - | 4.99 | 416,970 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,188,518 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,073 |
| Himalayan Countries | 0 | - | 4.95 | 136,631 |
| Andean Countries | 0 | - | 4.95 | 83,554 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,809 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,095 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,478 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,067 |
| Danube Countries | 0 | - | 4.97 | 71,464 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,273 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,874 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,222 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,212 |
| European Landlocked Countries | 0 | - | 4.99 | 146,164 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,824 |
| Countries with the Most Species | 0 | - | 4.99 | 102,181 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,953 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,345 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,525 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,185 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,832 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,213 |
| Countries in the Alps | 0 | - | 4.86 | 117,381 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,931 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,967 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,278 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,776 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,865 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,280 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,023 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,013 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,834 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,375 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,380 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,219 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,757 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,024 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,031 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,777 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,918 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,450 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,275 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,185 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,656 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,848 |
| Largest Countries By Category | 0 | - | 4.97 | 157,312 |
| Countries by Countries | 0 | - | 4.96 | 62,628 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,916 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,089 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,414 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,117 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,742,885 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,249 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,945 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,987 |
| Island Countries | 0 | - | 4.99 | 708,937 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,716 |
| Northernmost Countries | 0 | - | 4.99 | 359,529 |
| Countries of South America | 0 | - | 5.00 | 920,127 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,624 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,796 |
| "Land" Countries | 0 | - | 4.98 | 334,744 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,412 |
| Countries with Megacities | 0 | - | 4.99 | 249,206 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,269 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,617 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,580 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,580 |
| Countries by Official Language | 0 | - | 4.95 | 194,085 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,873 |
| Countries in their Native Language | 0 | - | 4.99 | 197,696 |
| Independence from Whom | 0 | - | 4.99 | 210,887 |
| Subdivisions by Country | 0 | - | 4.86 | 50,213 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,403 |
| Megadiverse Countries | 0 | - | 4.96 | 134,571 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,904 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,088 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,645 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,955 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,472 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,253 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,653 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,575 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,390 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,812 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,367 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,596 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,698 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,665 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,875 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,224 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,283 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,662 |
| World Map Quiz | 0 | - | 4.81 | 64,157 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,562 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,736 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,114 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,700 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,432 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,776 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,302 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,491 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,655 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,161 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,666 |
| Widest Countries East to West | 0 | - | 4.92 | 129,176 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,335 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,698 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,935 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,972 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,007 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,387 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,128 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,683 |
| Countries with Double Letters | 0 | - | 4.96 | 94,239 |
| Countries that End in N | 0 | - | 4.95 | 167,622 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,704 |
| Countries with Six Letters | 0 | - | 4.93 | 211,238 |
| Countries with W | 0 | - | 4.97 | 158,908 |
| Countries with Z | 0 | - | 4.98 | 288,896 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,113 |
| Countries That End in U | 0 | - | 4.95 | 119,991 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,225 |
| Countries that End in O | 0 | - | 4.92 | 158,917 |
| Countries that End in R | 0 | - | 4.87 | 118,542 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,310 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,833 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,789 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,843 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,422 |
| Countries That End in Y | 0 | - | 4.90 | 185,461 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,890 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,124 |
| Countries that End in I | 0 | - | 4.94 | 134,701 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,738 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,427 |
| Countries That End in NIA | 0 | - | 4.92 | 109,317 |
| Countries That End in BIA | 0 | - | 4.93 | 148,604 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,456 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,803 |
| Countries That End in RIA | 0 | - | 4.93 | 126,369 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,371 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,159 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,897 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,230 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,830 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,166 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,475 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,982 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,872 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,037 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,556 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,251 |
| Countries that End in L | 0 | - | 4.94 | 156,322 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,053 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,083 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,722 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,585 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,634 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,379 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,834 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,386 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,858 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,293 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,065 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,882 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,303 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,534 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,532 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,416 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,973 |
| One Border Countries | 0 | - | 4.98 | 466,596 |
| Top Producing Countries | 0 | - | 4.63 | 116,048 |
| ISO Country Codes | 0 | - | 4.45 | 82,280 |
| Countries on the Equator | 0 | - | 4.63 | 140,520 |
| Members of the Arab League | 0 | - | 4.77 | 75,540 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,703 |
| Separatist Movements | 0 | - | 4.44 | 45,750 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,850 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,701 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,071 |
| Westernmost Countries | 0 | - | 4.50 | 49,476 |
| Easternmost Countries | 0 | - | 4.75 | 62,747 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,550 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,196 |
| Indochina Countries | 0 | - | 4.74 | 66,041 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,562 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,163 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,922 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,020 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,286 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,535 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,705 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,817 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,171 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,526 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,384 |
| Flyover Countries | 0 | - | 4.68 | 50,665 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,612 |
