| Landlocked Countries | 0 | - | 4.99 | 414,159 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,964,254 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,805 |
| Himalayan Countries | 0 | - | 4.95 | 135,532 |
| Andean Countries | 0 | - | 4.94 | 82,931 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,296 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,328 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,994 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,669 |
| Danube Countries | 0 | - | 4.97 | 71,126 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,831 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,593 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,596 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,503 |
| European Landlocked Countries | 0 | - | 4.99 | 145,824 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,288 |
| Countries with the Most Species | 0 | - | 4.99 | 95,277 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,433 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,216 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,386 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,986 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,614 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,995 |
| Countries in the Alps | 0 | - | 4.86 | 116,915 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,630 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,357 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,056 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,469 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,240 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,049 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,641 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,808 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,501 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,111 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,212 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,074 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,492 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,800 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,789 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,183 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,699 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,286 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,849 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,582 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,861 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,633 |
| Largest Countries By Category | 0 | - | 4.97 | 156,854 |
| Countries by Countries | 0 | - | 4.96 | 62,315 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,494 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,980 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,347 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,824 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,721,448 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,694 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,330 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,137 |
| Island Countries | 0 | - | 4.99 | 707,824 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,210 |
| Northernmost Countries | 0 | - | 4.99 | 358,017 |
| Countries of South America | 0 | - | 5.00 | 915,762 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,772 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,312 |
| "Land" Countries | 0 | - | 4.98 | 333,789 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,554 |
| Countries with Megacities | 0 | - | 4.99 | 247,440 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,394 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,163 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,817 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,073 |
| Countries by Official Language | 0 | - | 4.95 | 192,889 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,292 |
| Countries in their Native Language | 0 | - | 4.99 | 196,744 |
| Independence from Whom | 0 | - | 4.99 | 209,835 |
| Subdivisions by Country | 0 | - | 4.86 | 50,091 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,855 |
| Megadiverse Countries | 0 | - | 4.97 | 133,949 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,917 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,947 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,457 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,871 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,735 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,039 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,144 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,201 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,239 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,755 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,705 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,449 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,535 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,529 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,716 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,050 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,867 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,728 |
| World Map Quiz | 0 | - | 4.81 | 63,612 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,993 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,394 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,470 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,215 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,004 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,919 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,919 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,114 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,324 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,978 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,373 |
| Widest Countries East to West | 0 | - | 4.92 | 128,657 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,223 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,300 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,594 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,727 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,679 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,104 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,064 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,600 |
| Countries with Double Letters | 0 | - | 4.96 | 93,481 |
| Countries that End in N | 0 | - | 4.94 | 156,972 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,784 |
| Countries with Six Letters | 0 | - | 4.93 | 210,453 |
| Countries with W | 0 | - | 4.97 | 158,293 |
| Countries with Z | 0 | - | 4.98 | 287,997 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,616 |
| Countries That End in U | 0 | - | 4.95 | 119,548 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,679 |
| Countries that End in O | 0 | - | 4.92 | 158,590 |
| Countries that End in R | 0 | - | 4.87 | 118,302 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,879 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,191 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,410 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,547 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,085 |
| Countries That End in Y | 0 | - | 4.90 | 185,233 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,461 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,762 |
| Countries that End in I | 0 | - | 4.94 | 134,463 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,293 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,236 |
| Countries That End in NIA | 0 | - | 4.92 | 109,051 |
| Countries That End in BIA | 0 | - | 4.92 | 147,763 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,137 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,540 |
| Countries That End in RIA | 0 | - | 4.93 | 126,122 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,064 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,294 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,558 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,937 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,426 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,957 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,175 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,702 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,565 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,839 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,213 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,875 |
| Countries that End in L | 0 | - | 4.94 | 155,792 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,550 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,998 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,553 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,347 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,464 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,490 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,328 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 136,515 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,410 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,708 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,727 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,717 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,185 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,436 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,355 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,023 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,891 |
| One Border Countries | 0 | - | 4.98 | 464,795 |
| Top Producing Countries | 0 | - | 4.63 | 115,941 |
| ISO Country Codes | 0 | - | 4.45 | 82,146 |
| Countries on the Equator | 0 | - | 4.63 | 140,344 |
| Members of the Arab League | 0 | - | 4.77 | 75,482 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,592 |
| Separatist Movements | 0 | - | 4.44 | 45,653 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,638 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,645 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,578 |
| Westernmost Countries | 0 | - | 4.50 | 49,432 |
| Easternmost Countries | 0 | - | 4.75 | 62,688 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,479 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,921 |
| Indochina Countries | 0 | - | 4.74 | 65,952 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,531 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,788 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,883 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,962 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,205 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,431 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,608 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,732 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,013 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,419 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,280 |
| Flyover Countries | 0 | - | 4.67 | 50,578 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,441 |
