| Landlocked Countries | 0 | - | 4.99 | 415,578 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,075,471 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,397 |
| Himalayan Countries | 0 | - | 4.95 | 136,042 |
| Andean Countries | 0 | - | 4.94 | 83,209 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,523 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,689 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,216 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,863 |
| Danube Countries | 0 | - | 4.97 | 71,283 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,026 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,730 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,909 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,850 |
| European Landlocked Countries | 0 | - | 4.99 | 145,991 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,565 |
| Countries with the Most Species | 0 | - | 4.99 | 95,358 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,693 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,276 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,446 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,078 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,730 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,097 |
| Countries in the Alps | 0 | - | 4.86 | 117,151 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,775 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,632 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,171 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,607 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,407 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,157 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,828 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,910 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,712 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,228 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,281 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,153 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,635 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,899 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,911 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,509 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,810 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,358 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,061 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,378 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,260 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,744 |
| Largest Countries By Category | 0 | - | 4.97 | 157,068 |
| Countries by Countries | 0 | - | 4.96 | 62,463 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,703 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,036 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,386 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,971 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,732,540 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,013 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,885 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,905 |
| Island Countries | 0 | - | 4.99 | 708,410 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,993 |
| Northernmost Countries | 0 | - | 4.99 | 358,816 |
| Countries of South America | 0 | - | 5.00 | 918,165 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,647 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,087 |
| "Land" Countries | 0 | - | 4.98 | 334,144 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,964 |
| Countries with Megacities | 0 | - | 4.99 | 248,338 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,867 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,386 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,255 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,322 |
| Countries by Official Language | 0 | - | 4.95 | 193,233 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,792 |
| Countries in their Native Language | 0 | - | 4.99 | 197,063 |
| Independence from Whom | 0 | - | 4.99 | 210,205 |
| Subdivisions by Country | 0 | - | 4.86 | 50,155 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,102 |
| Megadiverse Countries | 0 | - | 4.96 | 134,475 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,229 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,029 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,553 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,917 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,904 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,140 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,379 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,468 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,310 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,789 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,977 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,530 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,635 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,596 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,808 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,132 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,713 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,202 |
| World Map Quiz | 0 | - | 4.81 | 63,841 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,816 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,616 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,824 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,548 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,268 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,407 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,141 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,338 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,527 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,092 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,553 |
| Widest Countries East to West | 0 | - | 4.92 | 129,048 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,292 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,520 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,661 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,880 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,862 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,252 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,817 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,648 |
| Countries with Double Letters | 0 | - | 4.96 | 93,735 |
| Countries that End in N | 0 | - | 4.94 | 157,170 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,093 |
| Countries with Six Letters | 0 | - | 4.93 | 210,756 |
| Countries with W | 0 | - | 4.97 | 158,448 |
| Countries with Z | 0 | - | 4.98 | 288,302 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,801 |
| Countries That End in U | 0 | - | 4.95 | 119,626 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,918 |
| Countries that End in O | 0 | - | 4.92 | 158,673 |
| Countries that End in R | 0 | - | 4.87 | 118,385 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,944 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,461 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,588 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,681 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,233 |
| Countries That End in Y | 0 | - | 4.90 | 185,301 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,651 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,940 |
| Countries that End in I | 0 | - | 4.94 | 134,562 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,525 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,327 |
| Countries That End in NIA | 0 | - | 4.92 | 109,146 |
| Countries That End in BIA | 0 | - | 4.92 | 147,875 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,288 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,661 |
| Countries That End in RIA | 0 | - | 4.93 | 126,213 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,203 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,803 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,713 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,061 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,622 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,047 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,307 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,824 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,720 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,913 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,377 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,028 |
| Countries that End in L | 0 | - | 4.94 | 156,176 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,286 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,025 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,645 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,482 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,545 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,053 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,672 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,894 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,695 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,091 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,957 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,834 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,253 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,471 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,439 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,298 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,463 |
| One Border Countries | 0 | - | 4.98 | 465,857 |
| Top Producing Countries | 0 | - | 4.63 | 115,986 |
| ISO Country Codes | 0 | - | 4.45 | 82,227 |
| Countries on the Equator | 0 | - | 4.63 | 140,418 |
| Members of the Arab League | 0 | - | 4.77 | 75,510 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,644 |
| Separatist Movements | 0 | - | 4.44 | 45,713 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,746 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,678 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,019 |
| Westernmost Countries | 0 | - | 4.50 | 49,456 |
| Easternmost Countries | 0 | - | 4.75 | 62,716 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,521 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,060 |
| Indochina Countries | 0 | - | 4.74 | 65,998 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,549 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,848 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,903 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,989 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,245 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,488 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,657 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,776 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,084 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,476 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,329 |
| Flyover Countries | 0 | - | 4.68 | 50,628 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,523 |
