| Landlocked Countries | 0 | - | 4.99 | 412,859 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,849,414 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,224 |
| Himalayan Countries | 0 | - | 4.95 | 135,045 |
| Andean Countries | 0 | - | 4.94 | 82,658 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,078 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 122,979 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,752 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,458 |
| Danube Countries | 0 | - | 4.97 | 70,991 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,634 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,452 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,285 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,193 |
| European Landlocked Countries | 0 | - | 4.99 | 145,664 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,045 |
| Countries with the Most Species | 0 | - | 4.99 | 95,184 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,188 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,174 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,333 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,907 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,510 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,864 |
| Countries in the Alps | 0 | - | 4.87 | 116,680 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,466 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,073 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,937 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,318 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,062 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,934 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,468 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,683 |
| Largest Country by Body of Water | 0 | - | 4.95 | 55,400 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,965 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,164 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,994 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,361 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,670 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,671 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,856 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,565 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,199 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,661 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,818 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,356 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,537 |
| Largest Countries By Category | 0 | - | 4.97 | 156,604 |
| Countries by Countries | 0 | - | 4.96 | 62,161 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,207 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,931 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,306 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,649 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,709,548 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,992 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,818 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 400,986 |
| Island Countries | 0 | - | 4.99 | 707,225 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,296 |
| Northernmost Countries | 0 | - | 4.99 | 357,229 |
| Countries of South America | 0 | - | 5.00 | 913,340 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,559 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,054 |
| "Land" Countries | 0 | - | 4.98 | 333,407 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,855 |
| Countries with Megacities | 0 | - | 4.99 | 246,162 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,774 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,729 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,237 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,664 |
| Countries by Official Language | 0 | - | 4.95 | 192,581 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,854 |
| Countries in their Native Language | 0 | - | 4.99 | 196,460 |
| Independence from Whom | 0 | - | 4.99 | 209,453 |
| Subdivisions by Country | 0 | - | 4.86 | 50,034 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,580 |
| Megadiverse Countries | 0 | - | 4.97 | 133,829 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,645 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,876 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,372 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,836 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,533 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,937 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,586 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,059 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,175 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,711 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,368 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,360 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,423 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,441 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,600 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,978 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,359,975 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,332 |
| World Map Quiz | 0 | - | 4.81 | 63,351 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,195 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,216 |
| Countries by Founding Story | 0 | - | 4.95 | 76,441 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,148 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,875 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,847 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,499 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,762 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,958 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,167 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,876 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,251 |
| Widest Countries East to West | 0 | - | 4.92 | 128,518 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,191 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,073 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,519 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,621 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,515 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,945 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,031 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,552 |
| Countries with Double Letters | 0 | - | 4.97 | 93,212 |
| Countries that End in N | 0 | - | 4.94 | 156,280 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,476 |
| Countries with Six Letters | 0 | - | 4.93 | 210,178 |
| Countries with W | 0 | - | 4.97 | 158,089 |
| Countries with Z | 0 | - | 4.98 | 287,334 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,425 |
| Countries That End in U | 0 | - | 4.95 | 119,441 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,324 |
| Countries that End in O | 0 | - | 4.92 | 158,473 |
| Countries that End in R | 0 | - | 4.86 | 118,201 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,807 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,854 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,180 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,377 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,565 |
| Countries That End in Y | 0 | - | 4.90 | 185,148 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,172 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,542 |
| Countries that End in I | 0 | - | 4.94 | 134,298 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,009 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,137 |
| Countries That End in NIA | 0 | - | 4.92 | 108,927 |
| Countries That End in BIA | 0 | - | 4.92 | 147,607 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,965 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,401 |
| Countries That End in RIA | 0 | - | 4.93 | 126,007 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,915 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 224,957 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,424 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,800 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,234 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,868 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,020 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,545 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,385 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,767 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,012 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,683 |
| Countries that End in L | 0 | - | 4.94 | 155,638 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,644 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,965 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,451 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,220 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,366 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,173 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,931 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,826 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,048 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,240 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,429 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,564 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,143 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,389 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,256 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,440 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,018 |
| One Border Countries | 0 | - | 4.98 | 463,547 |
| Top Producing Countries | 0 | - | 4.63 | 115,865 |
| ISO Country Codes | 0 | - | 4.45 | 82,085 |
| Countries on the Equator | 0 | - | 4.63 | 140,248 |
| Members of the Arab League | 0 | - | 4.77 | 75,447 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,525 |
| Separatist Movements | 0 | - | 4.44 | 45,596 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,502 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,619 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,523 |
| Westernmost Countries | 0 | - | 4.50 | 49,400 |
| Easternmost Countries | 0 | - | 4.75 | 62,660 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,436 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,783 |
| Indochina Countries | 0 | - | 4.74 | 65,893 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,506 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,725 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,860 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,944 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,161 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,374 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,537 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,699 |
| Most Populous Countries By Category | 0 | - | 4.55 | 84,929 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,361 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,205 |
| Flyover Countries | 0 | - | 4.64 | 50,524 |
