| Landlocked Countries | 0 | - | 4.99 | 426,873 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,940,025 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,731 |
| Himalayan Countries | 0 | - | 4.93 | 140,651 |
| Andean Countries | 0 | - | 4.94 | 85,721 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,840 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,372 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,396 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,626 |
| Danube Countries | 0 | - | 4.97 | 72,510 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,730 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,930 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,355 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,814 |
| European Landlocked Countries | 0 | - | 4.99 | 147,701 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,469 |
| Countries with the Most Species | 0 | - | 4.99 | 103,625 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,571 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,802 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,933 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,899 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,652 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,097 |
| Countries in the Alps | 0 | - | 4.87 | 118,912 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,885 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,049 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,034 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,130 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,085 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,352 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,525 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,962 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,490 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,279 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,933 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,810 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,634 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,887 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,984 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,065 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,690 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,074 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,783 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,121 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,377 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,585 |
| Largest Countries By Category | 0 | - | 4.97 | 159,015 |
| Countries by Countries | 0 | - | 4.97 | 63,758 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,375 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,437 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,697 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,191 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,809,615 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,217 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,940 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,138 |
| Island Countries | 0 | - | 4.99 | 712,860 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,687 |
| Northernmost Countries | 0 | - | 4.99 | 364,417 |
| Countries of South America | 0 | - | 5.00 | 933,712 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,772 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,734 |
| "Land" Countries | 0 | - | 4.98 | 338,807 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,399 |
| Countries with Megacities | 0 | - | 4.99 | 267,612 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,045 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,274 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,385 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,378 |
| Countries by Official Language | 0 | - | 4.95 | 196,152 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,835 |
| Countries in their Native Language | 0 | - | 4.99 | 199,886 |
| Independence from Whom | 0 | - | 4.99 | 213,302 |
| Subdivisions by Country | 0 | - | 4.87 | 50,649 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,599 |
| Megadiverse Countries | 0 | - | 4.96 | 147,705 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,072 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,563 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,771 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,244 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,405 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,907 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,225 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,604 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,141 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,691 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,455 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,483 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,195 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,616 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,940 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,939 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,618 |
| World Map Quiz | 0 | - | 4.81 | 65,870 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,701 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,772 |
| Countries by Founding Story | 0 | - | 4.95 | 77,884 |
| Countries by Road Signs | 0 | - | 4.98 | 54,414 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,428 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,186 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,648 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,811 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,516 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,625 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,814 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,742 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,892 |
| Widest Countries East to West | 0 | - | 4.92 | 130,798 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,623 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,345 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,545 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,124 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,067 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,577 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,525 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,916 |
| Countries with Double Letters | 0 | - | 4.96 | 97,469 |
| Countries that End in N | 0 | - | 4.95 | 172,512 |
| Countries with Five Letters | 0 | - | 4.96 | 284,456 |
| Countries with Six Letters | 0 | - | 4.94 | 214,827 |
| Countries with W | 0 | - | 4.96 | 161,210 |
| Countries with Z | 0 | - | 4.98 | 292,845 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,573 |
| Countries That End in U | 0 | - | 4.95 | 121,333 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,325 |
| Countries that End in O | 0 | - | 4.92 | 160,329 |
| Countries that End in R | 0 | - | 4.87 | 119,254 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,024 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,059 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 182,940 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,082 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,533 |
| Countries That End in Y | 0 | - | 4.91 | 186,149 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,061 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,372 |
| Countries that End in I | 0 | - | 4.94 | 135,387 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,105 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,117 |
| Countries That End in NIA | 0 | - | 4.92 | 110,124 |
| Countries That End in BIA | 0 | - | 4.93 | 149,691 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,880 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,853 |
| Countries That End in RIA | 0 | - | 4.93 | 127,116 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,497 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,841 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,322 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,777 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,335 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,881 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,409 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,578 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,006 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,703 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,850 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,547 |
| Countries that End in L | 0 | - | 4.94 | 157,208 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,378 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,368 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,829 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,133 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,520 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,585 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,253 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,493 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,375 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,120 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,290 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,282 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,964 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,867 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,331 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,431 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,816 |
| One Border Countries | 0 | - | 4.98 | 472,368 |
| Top Producing Countries | 0 | - | 4.63 | 116,450 |
| ISO Country Codes | 0 | - | 4.49 | 91,940 |
| Countries on the Equator | 0 | - | 4.63 | 141,291 |
| Members of the Arab League | 0 | - | 4.78 | 75,745 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,103 |
| Separatist Movements | 0 | - | 4.45 | 46,060 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,660 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,941 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,466 |
| Westernmost Countries | 0 | - | 4.43 | 62,562 |
| Easternmost Countries | 0 | - | 4.74 | 63,081 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,774 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 109,074 |
| Indochina Countries | 0 | - | 4.74 | 66,379 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,695 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 96,840 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,035 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,177 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,517 |
| Countries with More Sheep than People | 0 | - | 4.48 | 32,115 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,886 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 75,958 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,097 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,726 |
| Countries with the Most Turkic People | 0 | - | 4.77 | 45,898 |
