| Landlocked Countries | 0 | - | 4.99 | 417,010 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,191,459 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,096 |
| Himalayan Countries | 0 | - | 4.95 | 136,656 |
| Andean Countries | 0 | - | 4.95 | 83,562 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,817 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,104 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,483 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,077 |
| Danube Countries | 0 | - | 4.97 | 71,466 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,278 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,879 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,230 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,227 |
| European Landlocked Countries | 0 | - | 4.99 | 146,164 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,826 |
| Countries with the Most Species | 0 | - | 4.99 | 102,204 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,955 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,347 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,526 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,187 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,836 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,215 |
| Countries in the Alps | 0 | - | 4.86 | 117,386 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,934 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,983 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,279 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,777 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,867 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,290 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,030 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,017 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,841 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,380 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,383 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,221 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,759 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,028 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,033 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,787 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,919 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,452 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,281 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,207 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,669 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,849 |
| Largest Countries By Category | 0 | - | 4.97 | 157,318 |
| Countries by Countries | 0 | - | 4.96 | 62,631 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,921 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,091 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,414 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,126 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,743,204 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,274 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,966 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,024 |
| Island Countries | 0 | - | 4.99 | 708,969 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,764 |
| Northernmost Countries | 0 | - | 4.99 | 359,552 |
| Countries of South America | 0 | - | 5.00 | 920,182 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,663 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,939 |
| "Land" Countries | 0 | - | 4.98 | 334,805 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,420 |
| Countries with Megacities | 0 | - | 4.99 | 249,238 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,281 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,624 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,590 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,601 |
| Countries by Official Language | 0 | - | 4.95 | 194,100 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,904 |
| Countries in their Native Language | 0 | - | 4.99 | 197,720 |
| Independence from Whom | 0 | - | 4.99 | 210,898 |
| Subdivisions by Country | 0 | - | 4.86 | 50,214 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,407 |
| Megadiverse Countries | 0 | - | 4.96 | 134,574 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,920 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,089 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,651 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,956 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,482 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,256 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,658 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,578 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,393 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,813 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,374 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,598 |
| 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 | 74,877 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,228 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,370 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,670 |
| World Map Quiz | 0 | - | 4.81 | 64,169 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,586 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,741 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,118 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,706 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,435 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,791 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,308 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,496 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,662 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,164 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,722 |
| Widest Countries East to West | 0 | - | 4.92 | 129,179 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,336 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,703 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,936 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,975 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,011 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,392 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,130 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,684 |
| Countries with Double Letters | 0 | - | 4.96 | 94,285 |
| Countries that End in N | 0 | - | 4.95 | 167,774 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 262,211 |
| Countries with Six Letters | 0 | - | 4.93 | 211,310 |
| Countries with W | 0 | - | 4.97 | 158,942 |
| Countries with Z | 0 | - | 4.98 | 288,942 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,151 |
| Countries That End in U | 0 | - | 4.95 | 120,020 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,249 |
| Countries that End in O | 0 | - | 4.92 | 158,927 |
| Countries that End in R | 0 | - | 4.87 | 118,546 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,321 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,842 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,796 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,849 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,429 |
| Countries That End in Y | 0 | - | 4.90 | 185,466 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,903 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,136 |
| Countries that End in I | 0 | - | 4.94 | 134,703 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,745 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,432 |
| Countries That End in NIA | 0 | - | 4.92 | 109,321 |
| Countries That End in BIA | 0 | - | 4.93 | 148,606 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,459 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,810 |
| Countries That End in RIA | 0 | - | 4.93 | 126,373 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,377 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,165 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,904 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,238 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,847 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,173 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,480 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,988 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,879 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,040 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,563 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,260 |
| Countries that End in L | 0 | - | 4.94 | 156,326 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,071 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,086 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,724 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,586 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,638 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,386 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,847 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,393 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,864 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,302 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,068 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,882 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,306 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,534 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,534 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,470 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,993 |
| One Border Countries | 0 | - | 4.98 | 466,633 |
| Top Producing Countries | 0 | - | 4.63 | 116,052 |
| ISO Country Codes | 0 | - | 4.45 | 82,281 |
| Countries on the Equator | 0 | - | 4.63 | 140,527 |
| Members of the Arab League | 0 | - | 4.77 | 75,542 |
| 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 | 84,855 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,701 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,072 |
| Westernmost Countries | 0 | - | 4.50 | 49,477 |
| Easternmost Countries | 0 | - | 4.75 | 62,748 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,550 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,200 |
| 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 | 96,165 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,922 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,021 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,287 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,537 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,708 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,817 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,173 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,528 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,387 |
| Flyover Countries | 0 | - | 4.68 | 50,665 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,613 |
