| Landlocked Countries | 0 | - | 4.99 | 416,623 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,161,480 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,912 |
| Himalayan Countries | 0 | - | 4.95 | 136,490 |
| Andean Countries | 0 | - | 4.95 | 83,483 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,745 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,990 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,417 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,024 |
| Danube Countries | 0 | - | 4.97 | 71,427 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,209 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,846 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,149 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,114 |
| European Landlocked Countries | 0 | - | 4.99 | 146,128 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,756 |
| Countries with the Most Species | 0 | - | 4.99 | 101,477 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,894 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,328 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,508 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,158 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,808 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,188 |
| Countries in the Alps | 0 | - | 4.86 | 117,319 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,899 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,885 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,251 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,739 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,816 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,251 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,981 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,993 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,802 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,327 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,363 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,203 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,725 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,992 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,001 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,708 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,890 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,428 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,244 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,994 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,562 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,825 |
| Largest Countries By Category | 0 | - | 4.97 | 157,252 |
| Countries by Countries | 0 | - | 4.96 | 62,592 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,868 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,079 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,083 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,740,445 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,827 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,823 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,761 |
| Island Countries | 0 | - | 4.99 | 708,800 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,306 |
| Northernmost Countries | 0 | - | 4.99 | 359,366 |
| Countries of South America | 0 | - | 5.00 | 919,657 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,617 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,676 |
| "Land" Countries | 0 | - | 4.98 | 334,595 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,269 |
| Countries with Megacities | 0 | - | 4.99 | 248,924 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,120 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,541 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,478 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,496 |
| Countries by Official Language | 0 | - | 4.95 | 194,004 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,531 |
| Countries in their Native Language | 0 | - | 4.99 | 197,630 |
| Independence from Whom | 0 | - | 4.99 | 210,800 |
| Subdivisions by Country | 0 | - | 4.86 | 50,196 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,321 |
| Megadiverse Countries | 0 | - | 4.96 | 134,535 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,821 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,073 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,625 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,948 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,437 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,210 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,574 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,545 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,369 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,805 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,156 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,579 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,684 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,640 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,857 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,199 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,398 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,555 |
| World Map Quiz | 0 | - | 4.81 | 64,081 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,367 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,691 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,057 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,665 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,394 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,699 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,265 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,458 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,622 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,146 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,636 |
| Widest Countries East to West | 0 | - | 4.92 | 129,137 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,329 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,639 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,914 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,955 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,977 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,353 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,091 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,670 |
| Countries with Double Letters | 0 | - | 4.96 | 94,113 |
| Countries that End in N | 0 | - | 4.95 | 165,421 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,549 |
| Countries with Six Letters | 0 | - | 4.93 | 211,125 |
| Countries with W | 0 | - | 4.97 | 158,793 |
| Countries with Z | 0 | - | 4.98 | 288,741 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,018 |
| Countries That End in U | 0 | - | 4.95 | 119,906 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,144 |
| Countries that End in O | 0 | - | 4.92 | 158,858 |
| Countries that End in R | 0 | - | 4.87 | 118,504 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,228 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,733 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,728 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,807 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,369 |
| Countries That End in Y | 0 | - | 4.90 | 185,414 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,822 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,082 |
| Countries that End in I | 0 | - | 4.94 | 134,666 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,683 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,406 |
| Countries That End in NIA | 0 | - | 4.92 | 109,292 |
| Countries That End in BIA | 0 | - | 4.93 | 148,556 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,421 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,765 |
| Countries That End in RIA | 0 | - | 4.93 | 126,337 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,325 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,069 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,863 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,197 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,777 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,139 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,432 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,935 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,831 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,994 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,516 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,195 |
| Countries that End in L | 0 | - | 4.94 | 156,286 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,868 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,066 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,709 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,560 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,611 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,309 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,802 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,316 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,817 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,244 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,046 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,869 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,292 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,518 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,517 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,896 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,833 |
| One Border Countries | 0 | - | 4.98 | 466,388 |
| Top Producing Countries | 0 | - | 4.63 | 116,036 |
| ISO Country Codes | 0 | - | 4.45 | 82,270 |
| Countries on the Equator | 0 | - | 4.63 | 140,490 |
| Members of the Arab League | 0 | - | 4.77 | 75,530 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,691 |
| Separatist Movements | 0 | - | 4.44 | 45,742 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,817 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,695 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,059 |
| Westernmost Countries | 0 | - | 4.50 | 49,465 |
| Easternmost Countries | 0 | - | 4.75 | 62,740 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,548 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,161 |
| Indochina Countries | 0 | - | 4.74 | 66,033 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,558 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,152 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,918 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,013 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,276 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,527 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,697 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,810 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,156 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,518 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,369 |
| Flyover Countries | 0 | - | 4.68 | 50,656 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,586 |
