| Landlocked Countries | 0 | - | 4.99 | 416,959 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,187,784 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,586 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,066 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,669 |
| Countries with Fjords | 0 | - | 4.93 | 100,522 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,722 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,069 |
| Himalayan Countries | 0 | - | 4.95 | 136,629 |
| Andean Countries | 0 | - | 4.95 | 83,553 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,806 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,092 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,476 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,067 |
| Danube Countries | 0 | - | 4.97 | 71,464 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,272 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,873 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,219 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,211 |
| European Landlocked Countries | 0 | - | 4.99 | 146,164 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,823 |
| Countries with the Most Species | 0 | - | 4.99 | 102,164 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,949 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,345 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,524 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,185 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,832 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,213 |
| Countries in the Alps | 0 | - | 4.86 | 117,380 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,930 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,966 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,277 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,773 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,864 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,280 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,022 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,013 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,834 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,374 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,379 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,218 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,756 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,024 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,031 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,775 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,918 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,448 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,274 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,181 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,654 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,848 |
| Largest Countries By Category | 0 | - | 4.97 | 157,312 |
| Countries by Countries | 0 | - | 4.96 | 62,628 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,916 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,089 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,414 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,116 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,742,821 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,772 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,234 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,939 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,983 |
| Island Countries | 0 | - | 4.99 | 708,924 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,704 |
| Northernmost Countries | 0 | - | 4.99 | 359,520 |
| Countries of South America | 0 | - | 5.00 | 920,106 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,608 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,762 |
| "Land" Countries | 0 | - | 4.98 | 334,739 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,250 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,605 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,411 |
| Countries with Megacities | 0 | - | 4.99 | 249,197 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,267 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,614 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,578 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,579 |
| Countries by Official Language | 0 | - | 4.95 | 194,079 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,865 |
| Countries in their Native Language | 0 | - | 4.99 | 197,692 |
| Independence from Whom | 0 | - | 4.99 | 210,880 |
| Subdivisions by Country | 0 | - | 4.86 | 50,213 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,402 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,901 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,088 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,645 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,955 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,867 |
| North Sea Countries | 0 | - | 4.92 | 86,827 |
| Black Sea Countries | 0 | - | 4.87 | 60,464 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,167 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,272 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,471 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,252 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,653 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,575 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,390 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,812 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,361 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,596 |
| Countries With No Rivers | 0 | - | 4.96 | 76,244 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,698 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,664 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,875 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,223 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,658 |
| World Map Quiz | 0 | - | 4.81 | 64,147 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,062 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,557 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,735 |
| Countries by Founding Story | 0 | - | 4.95 | 76,910 |
| Countries by Road Signs | 0 | - | 4.98 | 53,451 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,108 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,698 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,430 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,870 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,775 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,301 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,490 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,654 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,161 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,665 |
| Widest Countries East to West | 0 | - | 4.92 | 129,172 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,335 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,698 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,935 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,972 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,006 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,387 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,128 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,683 |
| Countries with Double Letters | 0 | - | 4.96 | 94,233 |
| Countries that End in N | 0 | - | 4.95 | 167,571 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,700 |
| Countries with Six Letters | 0 | - | 4.93 | 211,229 |
| Countries with W | 0 | - | 4.97 | 158,907 |
| Countries with Z | 0 | - | 4.98 | 288,894 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,112 |
| Countries That End in U | 0 | - | 4.95 | 119,989 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,225 |
| Countries that End in O | 0 | - | 4.92 | 158,916 |
| Countries that End in R | 0 | - | 4.87 | 118,541 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,309 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,828 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,788 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,843 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,421 |
| Countries That End in Y | 0 | - | 4.90 | 185,460 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,890 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,122 |
| Countries that End in I | 0 | - | 4.94 | 134,701 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,738 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,426 |
| Countries That End in NIA | 0 | - | 4.92 | 109,316 |
| Countries That End in BIA | 0 | - | 4.93 | 148,604 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,455 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,803 |
| Countries That End in RIA | 0 | - | 4.93 | 126,368 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,369 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,159 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,895 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,228 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,826 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,165 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,474 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,980 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,871 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,036 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,553 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,249 |
| Countries that End in L | 0 | - | 4.94 | 156,321 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,043 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,082 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,722 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,584 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,633 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,375 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,832 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,382 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,858 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,292 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,065 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,882 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,301 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,502 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,533 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,531 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,400 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,965 |
| One Border Countries | 0 | - | 4.98 | 466,586 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,409 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,780 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,740 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,051 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,865 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,814,812 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,442 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,605,550 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,318 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,974 |
