| Landlocked Countries | 0 | - | 4.99 | 415,255 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,046,998 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,246 |
| Himalayan Countries | 0 | - | 4.95 | 135,939 |
| Andean Countries | 0 | - | 4.94 | 83,153 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,469 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,602 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,171 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,816 |
| Danube Countries | 0 | - | 4.97 | 71,252 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,984 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,701 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,838 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,772 |
| European Landlocked Countries | 0 | - | 4.99 | 145,950 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,498 |
| Countries with the Most Species | 0 | - | 4.99 | 95,334 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,625 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,267 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,437 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,061 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,710 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,066 |
| Countries in the Alps | 0 | - | 4.86 | 117,107 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,743 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,568 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,150 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,572 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,367 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,131 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,782 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,887 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,677 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,200 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,268 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,135 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,609 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,873 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,884 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,438 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,789 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,348 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,009 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,198 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,162 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,717 |
| Largest Countries By Category | 0 | - | 4.97 | 157,007 |
| Countries by Countries | 0 | - | 4.96 | 62,429 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,646 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,019 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,376 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,925 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,729,747 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,714 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,747 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,704 |
| Island Countries | 0 | - | 4.99 | 708,272 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,552 |
| Northernmost Countries | 0 | - | 4.99 | 358,633 |
| Countries of South America | 0 | - | 5.00 | 917,618 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,964 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,853,907 |
| "Land" Countries | 0 | - | 4.98 | 334,075 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,870 |
| Countries with Megacities | 0 | - | 4.99 | 248,111 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,752 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,331 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,134 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,277 |
| Countries by Official Language | 0 | - | 4.95 | 193,150 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,661 |
| Countries in their Native Language | 0 | - | 4.99 | 196,985 |
| Independence from Whom | 0 | - | 4.99 | 210,121 |
| Subdivisions by Country | 0 | - | 4.86 | 50,141 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,039 |
| Megadiverse Countries | 0 | - | 4.97 | 134,346 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,140 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,006 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,533 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,902 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,872 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,116 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,314 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,425 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,294 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,783 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,896 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,511 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,613 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,577 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,791 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,118 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,711 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,094 |
| World Map Quiz | 0 | - | 4.81 | 63,775 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,587 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,571 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,761 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,503 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,226 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,271 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,100 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,302 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,489 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,071 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,522 |
| Widest Countries East to West | 0 | - | 4.92 | 129,015 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,283 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,471 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,645 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,859 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,813 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,218 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,559 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,639 |
| Countries with Double Letters | 0 | - | 4.96 | 93,665 |
| Countries that End in N | 0 | - | 4.94 | 157,135 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,019 |
| Countries with Six Letters | 0 | - | 4.93 | 210,678 |
| Countries with W | 0 | - | 4.97 | 158,416 |
| Countries with Z | 0 | - | 4.98 | 288,225 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,749 |
| Countries That End in U | 0 | - | 4.95 | 119,610 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,859 |
| Countries that End in O | 0 | - | 4.92 | 158,654 |
| Countries that End in R | 0 | - | 4.87 | 118,374 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,930 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,397 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,548 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,642 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,195 |
| Countries That End in Y | 0 | - | 4.90 | 185,284 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,614 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,892 |
| Countries that End in I | 0 | - | 4.94 | 134,540 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,459 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,298 |
| Countries That End in NIA | 0 | - | 4.92 | 109,116 |
| Countries That End in BIA | 0 | - | 4.92 | 147,847 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,250 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,633 |
| Countries That End in RIA | 0 | - | 4.93 | 126,197 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,179 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,696 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,680 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,028 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,578 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,025 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,280 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,795 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,677 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,891 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,339 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,986 |
| Countries that End in L | 0 | - | 4.94 | 156,151 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,101 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,020 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,621 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,445 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,522 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,954 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,619 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,658 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,641 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,016 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,915 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,810 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,243 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,465 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,415 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,719 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,322 |
| One Border Countries | 0 | - | 4.98 | 465,597 |
| Top Producing Countries | 0 | - | 4.63 | 115,979 |
| ISO Country Codes | 0 | - | 4.45 | 82,207 |
| Countries on the Equator | 0 | - | 4.63 | 140,400 |
| Members of the Arab League | 0 | - | 4.77 | 75,506 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,629 |
| Separatist Movements | 0 | - | 4.44 | 45,704 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,723 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,672 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,925 |
| Westernmost Countries | 0 | - | 4.50 | 49,449 |
| Easternmost Countries | 0 | - | 4.75 | 62,711 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,510 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,025 |
| Indochina Countries | 0 | - | 4.74 | 65,987 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,542 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,832 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,898 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,982 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,236 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,472 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,645 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,761 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,063 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,466 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,318 |
| Flyover Countries | 0 | - | 4.67 | 50,612 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,502 |
