| Independence from Whom | 0 | - | 4.99 | 187,705 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,694 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,545 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,892 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 145,535 |
| Countries of the World in 1900 | 0 | - | 4.87 | 67,597 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 172,261 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 129,573 |
| Countries by Former Name | 0 | - | 4.99 | 114,725 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 197,477 |
| Historical City to Country | 0 | - | 4.82 | 72,746 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,410,144 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 330,264 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,128,882 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,196,720 |
| Most Populous Countries by Year | 0 | - | 4.81 | 94,841 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,325 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,057 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,608 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,993 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 67,325 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,633 |
| Members of the Arab League | 0 | - | 4.85 | 64,723 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,008 |
| Himalayan Countries | 0 | - | 4.95 | 106,957 |
| Andean Countries | 0 | - | 4.91 | 59,491 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,560 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,308 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,678 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,568 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,864 |
| Danube Countries | 0 | - | 4.96 | 57,007 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,025 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,121 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,100 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,976 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,260 |
| European Landlocked Countries | 0 | - | 4.99 | 136,578 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,388 |
| Countries with the Most Species | 0 | - | 4.99 | 89,712 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,889 |
| Countries Settled by Vikings | 0 | - | 4.93 | 112,158 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,892 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,188 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,734 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,675 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,950 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,562 |
| Countries in the Alps | 0 | - | 4.84 | 103,361 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,965 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,468 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,983 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,044 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,521 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,008 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,175 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,513 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,544 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,104 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,868 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,828 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,878 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,218 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,383 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,941 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,493 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,692 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,775 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,696 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,242 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,600 |
| Largest Countries By Category | 0 | - | 4.97 | 145,806 |
| Countries by Countries | 0 | - | 4.96 | 55,192 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,474 |
| Warsaw Pact Countries | 0 | - | 4.84 | 80,489 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,993 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.92 | 50,866 |
| Countries of Europe in 1444 | 0 | - | 4.93 | 87,967 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,006 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,179 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,515 |
| Island Countries Quiz | 0 | - | 4.99 | 665,193 |
| Biggest Countries by Area | 0 | - | 5.00 | 941,003 |
| Northernmost Countries | 0 | - | 4.99 | 329,473 |
| Countries of South America | 0 | - | 5.00 | 803,020 |
| Countries of Oceania | 0 | - | 5.00 | 905,054 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,594,628 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 162,890 |
| Countries by Independence Day Quiz | 0 | - | 4.63 | 44,622 |
| Former Countries by Capital | 0 | - | 4.44 | 104,288 |
| Former Countries | 0 | - | 4.72 | 125,200 |
| Guerrillas by Country | 0 | - | 4.45 | 38,747 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 69,667 |
| Battle to Country | 0 | - | 4.92 | 36,259 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,736 |
| Countries with Megacities | 0 | - | 4.99 | 199,996 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,548 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,063 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,116 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 65,042 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,775 |
| Countries by Official Language | 0 | - | 4.96 | 174,280 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,422 |
| Countries in their Native Language | 0 | - | 4.98 | 179,474 |
| Subdivisions by Country | 0 | - | 4.82 | 46,710 |
| Megadiverse Countries | 0 | - | 4.96 | 126,203 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,592 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,178 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,652 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,412 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,715 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,415 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,691 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,520 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,981 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,619 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,166 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,053 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,688 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 84,582 |
| World Map Quiz | 0 | - | 4.91 | 50,546 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,300 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,210 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,639 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,973 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,222 |
| Countries With the Most Languages | 0 | - | 4.91 | 175,920 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,108 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,495 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,564 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,622 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,099 |
| Widest Countries East to West | 0 | - | 4.93 | 120,063 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,010 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,880 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,412 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,024 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,189 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,082 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,791 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,646 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,261 |
| Countries with Double Letters | 0 | - | 4.96 | 70,116 |
| Countries that End in N | 0 | - | 4.94 | 134,324 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 231,700 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,049 |
| Countries with W | 0 | - | 4.96 | 124,263 |
| Countries with Z | 0 | - | 4.98 | 246,365 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,498 |
| Countries That End in U | 0 | - | 4.95 | 108,387 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 90,920 |
| Countries that End in O | 0 | - | 4.92 | 147,918 |
| Countries that End in R | 0 | - | 4.84 | 96,884 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,688 |
| Countries Ending in "IA" | 0 | - | 4.99 | 172,823 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 156,988 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,171 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,113 |
| Countries That End in Y | 0 | - | 4.90 | 162,039 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,136 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,807 |
| Countries that End in I | 0 | - | 4.92 | 114,888 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,682 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,992 |
| Countries That End in NIA | 0 | - | 4.93 | 101,404 |
| Countries That End in BIA | 0 | - | 4.91 | 126,797 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,345 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,440 |
| Countries That End in RIA | 0 | - | 4.90 | 101,517 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,169 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,078 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,797 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 111,864 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,481 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,262 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,526 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,319 |
| Countries with the Word "And" | 0 | - | 4.98 | 84,365 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,704 |
| Countries that End in L | 0 | - | 4.95 | 135,302 |
| "Land" Countries | 0 | - | 4.98 | 291,362 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,505 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,312 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,893 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,703 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 72,196 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 209,894 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 169,002 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,248 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,109 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,328 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,700 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,299 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,852 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,878 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,998 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,321,124 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,601 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,094,774 |
| One Border Countries | 0 | - | 4.98 | 412,949 |
