| Warsaw Pact Countries | 0 | - | 4.83 | 84,816 |
| Recently Independent Countries | 0 | - | 4.98 | 160,546 |
| Independence from Whom | 0 | - | 4.99 | 213,474 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,727 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,940 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,343 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,220 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,154 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,552 |
| Countries by Former Name | 0 | - | 4.99 | 126,006 |
| Historical City to Country | 0 | - | 4.85 | 79,108 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,990,625 |
| Landlocked Countries | 0 | - | 4.99 | 427,517 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,673 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,044 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,632 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,298 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,582 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,941 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,895 |
| Former Capitals | 0 | - | 4.88 | 71,739 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,200 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,792 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,797 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,814,317 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,396 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,034 |
| Himalayan Countries | 0 | - | 4.93 | 140,936 |
| Andean Countries | 0 | - | 4.94 | 85,861 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,966 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,570 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,511 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,730 |
| Danube Countries | 0 | - | 4.97 | 72,584 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,845 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,999 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,491 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,963 |
| European Landlocked Countries | 0 | - | 4.99 | 147,803 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,574 |
| Countries with the Most Species | 0 | - | 4.99 | 103,658 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,679 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,824 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,963 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,943 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,697 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,154 |
| Countries in the Alps | 0 | - | 4.87 | 119,014 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,068 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,206 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,079 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,203 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,169 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,410 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,627 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,019 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,525 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,336 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,968 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,844 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,692 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,943 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,046 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,199 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,758 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,652 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,871 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,460 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,577 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,631 |
| Largest Countries By Category | 0 | - | 4.97 | 159,134 |
| Countries by Countries | 0 | - | 4.97 | 63,829 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,631 |
| Battle to Country | 0 | - | 4.91 | 54,142 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,489 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,452 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,266 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,860 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,121 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,525 |
| Island Countries | 0 | - | 4.99 | 713,100 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,900 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,477 |
| Northernmost Countries | 0 | - | 4.99 | 364,728 |
| Countries of South America | 0 | - | 5.00 | 934,686 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,957 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,988 |
| "Land" Countries | 0 | - | 4.98 | 339,107 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 86,606 |
| Countries by Independence Day | 0 | - | 4.62 | 52,885 |
| Former Countries by Capital | 0 | - | 4.45 | 127,907 |
| Former Countries | 0 | - | 4.77 | 134,337 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,149 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,491 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,086 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,585 |
| Countries with Megacities | 0 | - | 4.99 | 268,031 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,228 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,376 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,557 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,482 |
| Countries by Official Language | 0 | - | 4.95 | 196,285 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,021 |
| Countries in their Native Language | 0 | - | 4.99 | 200,008 |
| Subdivisions by Country | 0 | - | 4.87 | 50,676 |
| Megadiverse Countries | 0 | - | 4.96 | 149,560 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,179 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,591 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,831 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,266 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,517 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,643 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,192 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,292 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,843 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,510 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,522 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,235 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,655 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,989 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,825 |
| World Map Quiz | 0 | - | 4.81 | 65,961 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,059 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,846 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,581 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,266 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,735 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,011 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,586 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,702 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,882 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,780 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,986 |
| Widest Countries East to West | 0 | - | 4.92 | 130,887 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,441 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,577 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,178 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,217 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,634 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,546 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,929 |
| Countries with Double Letters | 0 | - | 4.96 | 97,728 |
| Countries that End in N | 0 | - | 4.95 | 172,716 |
| Countries with Five Letters | 0 | - | 4.96 | 284,757 |
| Countries with Six Letters | 0 | - | 4.94 | 215,056 |
| Countries with W | 0 | - | 4.96 | 161,378 |
| Countries with Z | 0 | - | 4.98 | 293,122 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,750 |
| Countries That End in U | 0 | - | 4.95 | 121,431 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,498 |
| Countries that End in O | 0 | - | 4.92 | 160,406 |
| Countries that End in R | 0 | - | 4.87 | 119,304 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,080 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,216 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,225 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,264 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,938 |
| Countries That End in Y | 0 | - | 4.91 | 186,193 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,455 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,460 |
| Countries that End in I | 0 | - | 4.94 | 135,450 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,398 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,167 |
| Countries That End in NIA | 0 | - | 4.92 | 110,176 |
| Countries That End in BIA | 0 | - | 4.93 | 149,773 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,976 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,930 |
| Countries That End in RIA | 0 | - | 4.93 | 127,179 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,573 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,023 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,436 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,906 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,460 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,942 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,491 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,617 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,089 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,758 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,943 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,656 |
| Countries that End in L | 0 | - | 4.94 | 157,278 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,707 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,388 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,907 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,176 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,561 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,718 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,345 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,550 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,452 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,229 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,345 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,306 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,976 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,886 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,381 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,854,605 |
| One Border Countries | 0 | - | 4.98 | 472,724 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,661,296 |
