| Landlocked Countries | 0 | - | 4.99 | 427,002 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,950,053 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,799 |
| Himalayan Countries | 0 | - | 4.93 | 140,718 |
| Andean Countries | 0 | - | 4.94 | 85,745 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,871 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,414 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,426 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,646 |
| Danube Countries | 0 | - | 4.97 | 72,521 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,747 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,944 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,388 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,848 |
| European Landlocked Countries | 0 | - | 4.99 | 147,711 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,491 |
| Countries with the Most Species | 0 | - | 4.99 | 103,629 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,597 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,805 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,939 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,905 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,662 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,112 |
| Countries in the Alps | 0 | - | 4.87 | 118,931 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,929 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,073 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,044 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,146 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,096 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,364 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,551 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,973 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,498 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,291 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,941 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,818 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,655 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,904 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,999 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,093 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,704 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,235 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,809 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,189 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,423 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,597 |
| Largest Countries By Category | 0 | - | 4.97 | 159,044 |
| Countries by Countries | 0 | - | 4.97 | 63,786 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,396 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,440 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,701 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,199 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,614 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,362 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,980 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,211 |
| Island Countries | 0 | - | 4.99 | 712,909 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,855 |
| Northernmost Countries | 0 | - | 4.99 | 364,476 |
| Countries of South America | 0 | - | 5.00 | 933,936 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,002 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,164 |
| "Land" Countries | 0 | - | 4.98 | 338,896 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,433 |
| Countries with Megacities | 0 | - | 4.99 | 267,697 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,081 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,294 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,420 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,405 |
| Countries by Official Language | 0 | - | 4.95 | 196,170 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,876 |
| Countries in their Native Language | 0 | - | 4.99 | 199,915 |
| Independence from Whom | 0 | - | 4.99 | 213,346 |
| Subdivisions by Country | 0 | - | 4.87 | 50,653 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,620 |
| Megadiverse Countries | 0 | - | 4.96 | 148,184 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,097 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,569 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,785 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,250 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,429 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,912 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,247 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,609 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,147 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,716 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,467 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,492 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,203 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,622 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,950 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,281 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,652 |
| World Map Quiz | 0 | - | 4.81 | 65,890 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,754 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,782 |
| Countries by Founding Story | 0 | - | 4.95 | 77,895 |
| Countries by Road Signs | 0 | - | 4.98 | 54,428 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,450 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,204 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,674 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,856 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,529 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,636 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,832 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,753 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,913 |
| Widest Countries East to West | 0 | - | 4.92 | 130,814 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,624 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,362 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,549 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,139 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,077 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,591 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,526 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,916 |
| Countries with Double Letters | 0 | - | 4.96 | 97,532 |
| Countries that End in N | 0 | - | 4.95 | 172,557 |
| Countries with Five Letters | 0 | - | 4.96 | 284,533 |
| Countries with Six Letters | 0 | - | 4.94 | 214,879 |
| Countries with W | 0 | - | 4.96 | 161,261 |
| Countries with Z | 0 | - | 4.98 | 292,906 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,622 |
| Countries That End in U | 0 | - | 4.95 | 121,359 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,371 |
| Countries that End in O | 0 | - | 4.92 | 160,351 |
| Countries that End in R | 0 | - | 4.87 | 119,261 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,045 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,090 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 184,424 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,128 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,623 |
| Countries That End in Y | 0 | - | 4.91 | 186,158 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,141 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,386 |
| Countries that End in I | 0 | - | 4.94 | 135,405 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,168 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,125 |
| Countries That End in NIA | 0 | - | 4.92 | 110,140 |
| Countries That End in BIA | 0 | - | 4.93 | 149,708 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,905 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,873 |
| Countries That End in RIA | 0 | - | 4.93 | 127,124 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,518 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,884 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,347 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,807 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,360 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,901 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,425 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,591 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,025 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,720 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,874 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,569 |
| Countries that End in L | 0 | - | 4.94 | 157,226 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,463 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,372 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,862 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,144 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,528 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,611 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,273 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,508 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,390 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,153 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,303 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,289 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,968 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,870 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,339 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,642 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,870 |
| One Border Countries | 0 | - | 4.98 | 472,431 |
| Top Producing Countries | 0 | - | 4.63 | 116,455 |
| ISO Country Codes | 0 | - | 4.49 | 91,967 |
| Countries on the Equator | 0 | - | 4.63 | 141,298 |
| Members of the Arab League | 0 | - | 4.77 | 75,745 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,113 |
| Separatist Movements | 0 | - | 4.45 | 46,062 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,670 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,943 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,471 |
| Westernmost Countries | 0 | - | 4.43 | 62,564 |
| Easternmost Countries | 0 | - | 4.74 | 63,087 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,778 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 109,084 |
| Indochina Countries | 0 | - | 4.74 | 66,388 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,697 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 96,848 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,036 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,179 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,521 |
| Countries with More Sheep than People | 0 | - | 4.48 | 32,122 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,891 |
| Countries that are the Source of Refugees | 0 | - | 4.80 | 76,000 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,104 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,738 |
| Countries with the Most Turkic People | 0 | - | 4.77 | 45,904 |
