| Landlocked Countries | 0 | - | 4.99 | 413,881 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,945,862 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,705 |
| Himalayan Countries | 0 | - | 4.95 | 135,462 |
| Andean Countries | 0 | - | 4.94 | 82,870 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,263 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,272 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,954 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,641 |
| Danube Countries | 0 | - | 4.97 | 71,105 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,797 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,566 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,534 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,459 |
| European Landlocked Countries | 0 | - | 4.99 | 145,785 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,250 |
| Countries with the Most Species | 0 | - | 4.99 | 95,257 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,393 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,205 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,378 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,972 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,593 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,971 |
| Countries in the Alps | 0 | - | 4.86 | 116,871 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,595 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,307 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,030 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,445 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,203 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,028 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,608 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,781 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,409 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,094 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,202 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,056 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,470 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,780 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,775 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,134 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,679 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,273 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,806 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,467 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,768 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,618 |
| Largest Countries By Category | 0 | - | 4.97 | 156,810 |
| Countries by Countries | 0 | - | 4.96 | 62,285 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,442 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,975 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,339 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,795 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,516 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,464 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,215 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,008 |
| Island Countries | 0 | - | 4.99 | 707,738 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,876 |
| Northernmost Countries | 0 | - | 4.99 | 357,903 |
| Countries of South America | 0 | - | 5.00 | 915,325 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,203 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,528 |
| "Land" Countries | 0 | - | 4.98 | 333,725 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,465 |
| Countries with Megacities | 0 | - | 4.99 | 247,298 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,302 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,103 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,732 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,030 |
| Countries by Official Language | 0 | - | 4.95 | 192,832 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,202 |
| Countries in their Native Language | 0 | - | 4.99 | 196,698 |
| Independence from Whom | 0 | - | 4.99 | 209,781 |
| Subdivisions by Country | 0 | - | 4.86 | 50,080 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,817 |
| Megadiverse Countries | 0 | - | 4.97 | 133,928 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,864 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,932 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,439 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,868 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,705 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,025 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,095 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,173 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,227 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,648 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,440 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,512 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,518 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,704 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,037 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,175 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,664 |
| World Map Quiz | 0 | - | 4.81 | 63,540 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,855 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,360 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,420 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,034 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,981 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,857 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,898 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,095 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,303 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,959 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,352 |
| Widest Countries East to West | 0 | - | 4.92 | 128,630 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,220 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,264 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,586 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,713 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,663 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,083 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,057 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,592 |
| Countries with Double Letters | 0 | - | 4.96 | 93,442 |
| Countries that End in N | 0 | - | 4.94 | 156,943 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,749 |
| Countries with Six Letters | 0 | - | 4.93 | 210,417 |
| Countries with W | 0 | - | 4.97 | 158,271 |
| Countries with Z | 0 | - | 4.98 | 287,947 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,594 |
| Countries That End in U | 0 | - | 4.95 | 119,540 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,631 |
| Countries that End in O | 0 | - | 4.92 | 158,577 |
| Countries that End in R | 0 | - | 4.87 | 118,291 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,869 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,139 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,373 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,524 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,063 |
| Countries That End in Y | 0 | - | 4.90 | 185,223 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,426 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,724 |
| Countries that End in I | 0 | - | 4.94 | 134,444 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,256 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,216 |
| Countries That End in NIA | 0 | - | 4.92 | 109,030 |
| Countries That End in BIA | 0 | - | 4.92 | 147,741 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,104 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,516 |
| Countries That End in RIA | 0 | - | 4.93 | 126,107 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,039 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,250 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,546 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,911 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,394 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,948 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,152 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,677 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,540 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,826 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,185 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,854 |
| Countries that End in L | 0 | - | 4.94 | 155,768 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,403 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,996 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,536 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,326 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,448 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,188 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,152 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,947 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,240 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,442 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,556 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,634 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,178 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,430 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,346 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,631 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,796 |
| One Border Countries | 0 | - | 4.98 | 464,633 |
| Top Producing Countries | 0 | - | 4.63 | 115,924 |
| ISO Country Codes | 0 | - | 4.45 | 82,130 |
| Countries on the Equator | 0 | - | 4.63 | 140,327 |
| Members of the Arab League | 0 | - | 4.77 | 75,478 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,581 |
| Separatist Movements | 0 | - | 4.44 | 45,642 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,614 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,639 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,565 |
| Westernmost Countries | 0 | - | 4.50 | 49,427 |
| Easternmost Countries | 0 | - | 4.75 | 62,685 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,476 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,896 |
| Indochina Countries | 0 | - | 4.74 | 65,941 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,526 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,777 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,882 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,962 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,193 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,421 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,595 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,722 |
| Most Populous Countries By Category | 0 | - | 4.55 | 84,997 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,410 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,269 |
| Flyover Countries | 0 | - | 4.67 | 50,569 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,425 |
