| Landlocked Countries | 0 | - | 4.99 | 415,680 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,085,227 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,440 |
| Himalayan Countries | 0 | - | 4.95 | 136,091 |
| Andean Countries | 0 | - | 4.95 | 83,229 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,548 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,715 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,232 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,876 |
| Danube Countries | 0 | - | 4.97 | 71,291 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,050 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,744 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,939 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,884 |
| European Landlocked Countries | 0 | - | 4.99 | 146,001 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,588 |
| Countries with the Most Species | 0 | - | 4.99 | 95,364 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,718 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,282 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,451 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,088 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,739 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,111 |
| Countries in the Alps | 0 | - | 4.86 | 117,167 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,794 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,661 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,178 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,619 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,421 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,171 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,849 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,918 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,717 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,240 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,289 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,157 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,645 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,908 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,920 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,532 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,820 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,363 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,091 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,455 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,300 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,749 |
| Largest Countries By Category | 0 | - | 4.97 | 157,093 |
| Countries by Countries | 0 | - | 4.96 | 62,473 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,729 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,389 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,991 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,733,458 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,099 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,060 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,965 |
| Island Countries | 0 | - | 4.99 | 708,458 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,167 |
| Northernmost Countries | 0 | - | 4.99 | 358,878 |
| Countries of South America | 0 | - | 5.00 | 918,322 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,908 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,486 |
| "Land" Countries | 0 | - | 4.98 | 334,178 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,999 |
| Countries with Megacities | 0 | - | 4.99 | 248,404 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,895 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,405 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,278 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,343 |
| Countries by Official Language | 0 | - | 4.95 | 193,395 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,924 |
| Countries in their Native Language | 0 | - | 4.99 | 197,160 |
| Independence from Whom | 0 | - | 4.99 | 210,252 |
| Subdivisions by Country | 0 | - | 4.86 | 50,156 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,138 |
| Megadiverse Countries | 0 | - | 4.96 | 134,484 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,335 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,033 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,565 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,922 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,922 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,151 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,406 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,475 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,317 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,790 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,000 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,535 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,641 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,609 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,814 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,138 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,973 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,230 |
| World Map Quiz | 0 | - | 4.81 | 63,875 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,873 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,627 |
| Countries by Founding Story | 0 | - | 4.95 | 76,758 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,855 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,570 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,288 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,445 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,153 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,355 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,542 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,100 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,561 |
| Widest Countries East to West | 0 | - | 4.92 | 129,054 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,298 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,536 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,665 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,892 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,877 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,266 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,870 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,652 |
| Countries with Double Letters | 0 | - | 4.96 | 93,756 |
| Countries that End in N | 0 | - | 4.94 | 157,192 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,124 |
| Countries with Six Letters | 0 | - | 4.93 | 210,783 |
| Countries with W | 0 | - | 4.97 | 158,468 |
| Countries with Z | 0 | - | 4.98 | 288,332 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,814 |
| Countries That End in U | 0 | - | 4.95 | 119,636 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,934 |
| Countries that End in O | 0 | - | 4.92 | 158,677 |
| Countries that End in R | 0 | - | 4.87 | 118,395 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,947 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,489 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,594 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,693 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,249 |
| Countries That End in Y | 0 | - | 4.90 | 185,305 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,670 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,951 |
| Countries that End in I | 0 | - | 4.94 | 134,567 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,539 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,333 |
| Countries That End in NIA | 0 | - | 4.92 | 109,162 |
| Countries That End in BIA | 0 | - | 4.92 | 147,993 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,306 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,670 |
| Countries That End in RIA | 0 | - | 4.93 | 126,223 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,213 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,830 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,727 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,075 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,634 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,054 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,323 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,835 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,732 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,919 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,389 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,048 |
| Countries that End in L | 0 | - | 4.94 | 156,181 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,352 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,028 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,655 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,490 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,552 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,095 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,693 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,973 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,709 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,113 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,964 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,838 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,257 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,475 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,448 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,450 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,500 |
| One Border Countries | 0 | - | 4.98 | 465,914 |
| Top Producing Countries | 0 | - | 4.63 | 115,991 |
| ISO Country Codes | 0 | - | 4.45 | 82,232 |
| Countries on the Equator | 0 | - | 4.63 | 140,424 |
| Members of the Arab League | 0 | - | 4.77 | 75,512 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,647 |
| Separatist Movements | 0 | - | 4.44 | 45,718 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,759 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,684 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,028 |
| Westernmost Countries | 0 | - | 4.50 | 49,457 |
| Easternmost Countries | 0 | - | 4.75 | 62,720 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,523 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,070 |
| Indochina Countries | 0 | - | 4.74 | 66,001 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,549 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,852 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,905 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,991 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,249 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,492 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,664 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,779 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,094 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,477 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,337 |
| Flyover Countries | 0 | - | 4.68 | 50,632 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,534 |
