| Landlocked Countries | 0 | - | 4.99 | 419,151 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,347,184 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,070 |
| Himalayan Countries | 0 | - | 4.94 | 137,506 |
| Andean Countries | 0 | - | 4.95 | 83,979 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,251 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,721 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,870 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,375 |
| Danube Countries | 0 | - | 4.97 | 71,686 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,588 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,078 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,688 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,759 |
| European Landlocked Countries | 0 | - | 4.99 | 146,797 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,163 |
| Countries with the Most Species | 0 | - | 4.99 | 102,929 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,298 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,436 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,597 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,320 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,002 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,377 |
| Countries in the Alps | 0 | - | 4.87 | 117,714 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,155 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,403 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,433 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,017 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,125 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,715 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,302 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,207 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,977 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,571 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,496 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,346 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,946 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,203 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,225 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,226 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,078 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,582 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,553 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,466 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,267 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,012 |
| Largest Countries By Category | 0 | - | 4.97 | 157,668 |
| Countries by Countries | 0 | - | 4.96 | 62,855 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,235 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,168 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,475 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,339 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,866 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,151 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,656 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,194 |
| Island Countries | 0 | - | 4.99 | 709,836 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,249 |
| Northernmost Countries | 0 | - | 4.99 | 360,559 |
| Countries of South America | 0 | - | 5.00 | 923,133 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,346 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,922 |
| "Land" Countries | 0 | - | 4.98 | 335,834 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,081 |
| Countries with Megacities | 0 | - | 4.99 | 260,915 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,940 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,021 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,215 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,035 |
| Countries by Official Language | 0 | - | 4.95 | 194,668 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,583 |
| Countries in their Native Language | 0 | - | 4.99 | 198,216 |
| Independence from Whom | 0 | - | 4.99 | 211,358 |
| Subdivisions by Country | 0 | - | 4.86 | 50,294 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,737 |
| Megadiverse Countries | 0 | - | 4.96 | 134,781 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,570 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,191 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,762 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,023 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,727 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,393 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,002 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,852 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,493 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,996 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,028 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,726 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,004 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,790 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,164 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,334 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,111 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,246 |
| World Map Quiz | 0 | - | 4.81 | 64,567 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,690 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,051 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,544 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,943 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,661 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,372 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,534 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,688 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,844 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,273 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,301 |
| Widest Countries East to West | 0 | - | 4.92 | 129,392 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,387 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,976 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,998 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,522 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,236 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,567 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,243 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,730 |
| Countries with Double Letters | 0 | - | 4.97 | 95,119 |
| Countries that End in N | 0 | - | 4.95 | 170,047 |
| Countries with Five Letters | 0 | - | 4.96 | 280,410 |
| Countries with Six Letters | 0 | - | 4.94 | 212,520 |
| Countries with W | 0 | - | 4.97 | 159,537 |
| Countries with Z | 0 | - | 4.98 | 289,847 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,773 |
| Countries That End in U | 0 | - | 4.95 | 120,422 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,778 |
| Countries that End in O | 0 | - | 4.92 | 159,210 |
| Countries that End in R | 0 | - | 4.87 | 118,740 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,518 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,362 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,132 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,096 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,681 |
| Countries That End in Y | 0 | - | 4.90 | 185,653 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,252 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,449 |
| Countries that End in I | 0 | - | 4.94 | 134,877 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,110 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,585 |
| Countries That End in NIA | 0 | - | 4.92 | 109,523 |
| Countries That End in BIA | 0 | - | 4.93 | 148,861 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,743 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,074 |
| Countries That End in RIA | 0 | - | 4.93 | 126,548 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,652 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,748 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,259 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,624 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,146 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,339 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,692 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,255 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,148 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,207 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,846 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,558 |
| Countries that End in L | 0 | - | 4.94 | 156,548 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,095 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,157 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,845 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,732 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,790 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,811 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,193 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,645 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,151 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,634 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,599 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,964 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,605 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,678 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,557 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,796 |
| One Border Countries | 0 | - | 4.98 | 467,782 |
| Top Producing Countries | 0 | - | 4.63 | 116,142 |
| ISO Country Codes | 0 | - | 4.45 | 82,357 |
| Countries on the Equator | 0 | - | 4.63 | 140,643 |
| Members of the Arab League | 0 | - | 4.77 | 75,578 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,783 |
| Separatist Movements | 0 | - | 4.44 | 45,818 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,058 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,758 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,158 |
| Westernmost Countries | 0 | - | 4.45 | 60,745 |
| Easternmost Countries | 0 | - | 4.75 | 62,830 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,594 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,426 |
| Indochina Countries | 0 | - | 4.74 | 66,104 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,589 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,255 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,953 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,055 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,326 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,599 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,794 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,863 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,287 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,610 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,473 |
| Flyover Countries | 0 | - | 4.68 | 50,733 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,739 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,459 |
