| Landlocked Countries | 0 | - | 4.99 | 418,017 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,269,135 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,533 |
| Himalayan Countries | 0 | - | 4.94 | 137,024 |
| Andean Countries | 0 | - | 4.95 | 83,731 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,981 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,345 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,653 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,225 |
| Danube Countries | 0 | - | 4.97 | 71,563 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,412 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,975 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,481 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,528 |
| European Landlocked Countries | 0 | - | 4.99 | 146,670 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,996 |
| Countries with the Most Species | 0 | - | 4.99 | 102,723 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,131 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,388 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,554 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,248 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,916 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,298 |
| Countries in the Alps | 0 | - | 4.87 | 117,544 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,036 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,190 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,355 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,888 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,993 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,383 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,160 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,109 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,913 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,473 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,433 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,294 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,851 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,117 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,140 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,993 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,992 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,518 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,404 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,825 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,997 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,927 |
| Largest Countries By Category | 0 | - | 4.97 | 157,495 |
| Countries by Countries | 0 | - | 4.96 | 62,753 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,073 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,131 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,450 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,241 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,750,894 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,146 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,354 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,611 |
| Island Countries | 0 | - | 4.99 | 709,365 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,020 |
| Northernmost Countries | 0 | - | 4.99 | 360,061 |
| Countries of South America | 0 | - | 5.00 | 921,763 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,547 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,566 |
| "Land" Countries | 0 | - | 4.98 | 335,565 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,707 |
| Countries with Megacities | 0 | - | 4.99 | 249,821 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,535 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,795 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,863 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,786 |
| Countries by Official Language | 0 | - | 4.95 | 194,462 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,288 |
| Countries in their Native Language | 0 | - | 4.99 | 198,022 |
| Independence from Whom | 0 | - | 4.99 | 211,139 |
| Subdivisions by Country | 0 | - | 4.86 | 50,252 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,569 |
| Megadiverse Countries | 0 | - | 4.96 | 134,702 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,155 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,146 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,702 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,989 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,615 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,315 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,838 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,755 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,448 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,930 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,664 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,661 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,895 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,730 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,061 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,281 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,673 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,950 |
| World Map Quiz | 0 | - | 4.81 | 64,384 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,115 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,933 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,318 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,829 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,548 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,077 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,433 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,604 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,749 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,215 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,213 |
| Widest Countries East to West | 0 | - | 4.92 | 129,280 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,367 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,840 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,970 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,447 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,123 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,473 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,197 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,707 |
| Countries with Double Letters | 0 | - | 4.97 | 94,903 |
| Countries that End in N | 0 | - | 4.95 | 169,511 |
| Countries with Five Letters | 0 | - | 4.96 | 278,525 |
| Countries with Six Letters | 0 | - | 4.94 | 212,254 |
| Countries with W | 0 | - | 4.97 | 159,387 |
| Countries with Z | 0 | - | 4.98 | 289,591 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,587 |
| Countries That End in U | 0 | - | 4.95 | 120,346 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,600 |
| Countries that End in O | 0 | - | 4.92 | 159,140 |
| Countries that End in R | 0 | - | 4.87 | 118,680 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,466 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,175 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,009 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,005 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,590 |
| Countries That End in Y | 0 | - | 4.90 | 185,603 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,097 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,314 |
| Countries that End in I | 0 | - | 4.94 | 134,817 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,942 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,528 |
| Countries That End in NIA | 0 | - | 4.92 | 109,448 |
| Countries That End in BIA | 0 | - | 4.93 | 148,758 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,619 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,973 |
| Countries That End in RIA | 0 | - | 4.93 | 126,458 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,551 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,468 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,102 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,444 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,011 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,263 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,594 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,146 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,038 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,151 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,734 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,420 |
| Countries that End in L | 0 | - | 4.94 | 156,472 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,637 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,139 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,788 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,664 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,712 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,583 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,022 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,527 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,994 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,467 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,486 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,913 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,338 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,571 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,601 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,019 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,387 |
| One Border Countries | 0 | - | 4.98 | 467,217 |
| Top Producing Countries | 0 | - | 4.63 | 116,092 |
| ISO Country Codes | 0 | - | 4.45 | 82,319 |
| Countries on the Equator | 0 | - | 4.63 | 140,589 |
| Members of the Arab League | 0 | - | 4.78 | 75,556 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,739 |
| Separatist Movements | 0 | - | 4.44 | 45,782 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,972 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,728 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,113 |
| Westernmost Countries | 0 | - | 4.50 | 49,495 |
| Easternmost Countries | 0 | - | 4.77 | 62,772 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,580 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,317 |
| Indochina Countries | 0 | - | 4.74 | 66,071 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,569 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,216 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,943 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,037 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,305 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,571 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,746 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,843 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,225 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,576 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,434 |
| Flyover Countries | 0 | - | 4.68 | 50,697 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,685 |
