| Independence from Whom | 0 | - | 4.99 | 185,185 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,182 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,059 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,660 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 144,339 |
| Countries of the World in 1900 | 0 | - | 4.89 | 66,051 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 170,209 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 127,686 |
| Countries by Former Name | 0 | - | 4.99 | 113,664 |
| Historical City to Country | 0 | - | 4.82 | 72,218 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,828,218 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 322,453 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,059,995 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 109,451 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 68,533 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,044 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,600 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,866 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,823 |
| Members of the Arab League | 0 | - | 4.85 | 61,391 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,514 |
| Himalayan Countries | 0 | - | 4.94 | 104,400 |
| Andean Countries | 0 | - | 4.91 | 57,859 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 58,783 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,163 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,496 |
| Coffee Producing Countries | 0 | - | 4.81 | 53,944 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,189 |
| Danube Countries | 0 | - | 4.97 | 56,573 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,605 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,782 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,987 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,215 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,987 |
| European Landlocked Countries | 0 | - | 4.99 | 115,047 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,200 |
| Countries with the Most Species | 0 | - | 4.99 | 89,220 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,245 |
| Countries Settled by Vikings | 0 | - | 4.93 | 111,281 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,632 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,966 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,157 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,342 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,634 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,047 |
| Countries in the Alps | 0 | - | 4.83 | 102,465 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,155 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,791 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,477 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,130 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,817 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,424 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,494 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,065 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,250 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,547 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,290 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,515 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,604 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,355 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,849 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,347 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,678 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,260 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,298 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 195,477 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,539 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,203 |
| Largest Countries By Category | 0 | - | 4.96 | 144,661 |
| Countries by Countries | 0 | - | 4.96 | 54,523 |
| Country Flags with the Most White | 0 | - | 4.90 | 124,117 |
| Warsaw Pact Countries | 0 | - | 4.84 | 80,107 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,629 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 86,799 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,986 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,374 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 354,658 |
| Island Countries Quiz | 0 | - | 4.99 | 659,543 |
| Biggest Countries by Area | 0 | - | 5.00 | 931,353 |
| Northernmost Countries | 0 | - | 4.99 | 326,735 |
| Countries of South America | 0 | - | 5.00 | 791,153 |
| Countries of Oceania | 0 | - | 5.00 | 891,013 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,142,309 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,567,772 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,753 |
| Countries by Independence Day Quiz | 0 | - | 4.63 | 44,444 |
| Former Countries by Capital | 0 | - | 4.44 | 103,733 |
| Former Countries | 0 | - | 4.72 | 124,455 |
| Guerrillas by Country | 0 | - | 4.45 | 38,458 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 68,800 |
| Battle to Country | 0 | - | 4.92 | 35,283 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 111,239 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,505 |
| Countries with Megacities | 0 | - | 4.99 | 196,679 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,093 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,682 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 94,992 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,643 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,328 |
| Countries by Official Language | 0 | - | 4.95 | 156,662 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 248,498 |
| Countries in their Native Language | 0 | - | 4.98 | 177,847 |
| Subdivisions by Country | 0 | - | 4.82 | 46,384 |
| Megadiverse Countries | 0 | - | 4.96 | 125,205 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,923 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,573 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,319 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,392 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,990 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,962 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,289 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,630 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,505 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,906 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,912 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,448 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,170 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 81,791 |
| World Map Quiz | 0 | - | 4.90 | 49,113 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 112,844 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 81,331 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,429 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,738 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,822 |
| Countries With the Most Languages | 0 | - | 4.90 | 173,176 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,193 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,448 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,128 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,800 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,311 |
| Widest Countries East to West | 0 | - | 4.93 | 119,231 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,790 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,852 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,586 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 85,293 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,701 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,041 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,411 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,018 |
| Countries with Double Letters | 0 | - | 4.96 | 68,027 |
| Countries that End in N | 0 | - | 4.93 | 132,379 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,353 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 186,744 |
| Countries with W | 0 | - | 4.97 | 122,500 |
| Countries with Z | 0 | - | 4.98 | 244,074 |
| Countries with Letters Missing | 0 | - | 4.97 | 155,360 |
| Countries That End in U | 0 | - | 4.95 | 107,417 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,184 |
| Countries that End in O | 0 | - | 4.92 | 146,811 |
| Countries that End in R | 0 | - | 4.86 | 96,388 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,164 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,049 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,597 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,103 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,148 |
| Countries That End in Y | 0 | - | 4.90 | 161,571 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 160,802 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,591 |
| Countries that End in I | 0 | - | 4.92 | 114,430 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,352 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,178 |
| Countries That End in NIA | 0 | - | 4.93 | 100,737 |
| Countries That End in BIA | 0 | - | 4.91 | 125,942 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,087 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,607 |
| Countries That End in RIA | 0 | - | 4.90 | 100,851 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,316 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 200,370 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,500 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,373 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,188 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,117 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,584 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,737 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,549 |
| Countries that End in L | 0 | - | 4.95 | 134,155 |
| "Land" Countries | 0 | - | 4.98 | 288,957 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,627 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,162 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,181 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,100 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,495 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 207,581 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 165,718 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,320 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 132,562 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 193,634 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,739 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,814 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,996 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,221 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,950 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,309,532 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 348,954 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,058,012 |
| One Border Countries | 0 | - | 4.98 | 409,187 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 93,198 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,386,855 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.89 | 81,488 |
| Countries Unconquered since 1850 | 0 | - | 4.38 | 62,282 |
