| Independence from Whom | 0 | - | 4.99 | 211,048 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,503 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,290 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,764 |
| Recently Independent Countries | 0 | - | 4.98 | 158,509 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,332 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,409 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,089 |
| Countries by Former Name | 0 | - | 4.99 | 124,788 |
| Historical City to Country | 0 | - | 4.84 | 78,374 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,237,926 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,138 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,962 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 75,973 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 91,682 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,073 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,341 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,949 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,176 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,417 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,552 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,327 |
| Landlocked Countries | 0 | - | 4.99 | 417,551 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,747,879 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,453 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,526 |
| Battle to Country | 0 | - | 4.91 | 53,031 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,854 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,227 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,395 |
| Island Countries | 0 | - | 4.99 | 709,222 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,344 |
| Himalayan Countries | 0 | - | 4.95 | 136,865 |
| Andean Countries | 0 | - | 4.95 | 83,654 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,916 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,236 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,585 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,170 |
| Danube Countries | 0 | - | 4.97 | 71,517 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,350 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,932 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,379 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,424 |
| European Landlocked Countries | 0 | - | 4.99 | 146,232 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,934 |
| Countries with the Most Species | 0 | - | 4.99 | 102,578 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,057 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,372 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,546 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,220 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,881 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,264 |
| Countries in the Alps | 0 | - | 4.86 | 117,477 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,997 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,103 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,331 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,835 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,935 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,352 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,112 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,070 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,880 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,423 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,416 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,260 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,823 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,085 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,096 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,923 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,967 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,491 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,353 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,584 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,870 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,897 |
| Largest Countries By Category | 0 | - | 4.97 | 157,422 |
| Countries by Countries | 0 | - | 4.96 | 62,709 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,778 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,004 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,118 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,437 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,194 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,585 |
| Northernmost Countries | 0 | - | 4.99 | 359,889 |
| Countries of South America | 0 | - | 5.00 | 921,144 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,832 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,862,102 |
| "Land" Countries | 0 | - | 4.98 | 335,394 |
| Countries by Independence Day | 0 | - | 4.61 | 52,696 |
| Former Countries by Capital | 0 | - | 4.45 | 127,301 |
| Former Countries | 0 | - | 4.75 | 133,055 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,564 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,407 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,237 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,584 |
| Countries with Megacities | 0 | - | 4.99 | 249,603 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,436 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,734 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,779 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,696 |
| Countries by Official Language | 0 | - | 4.95 | 194,384 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,195 |
| Countries in their Native Language | 0 | - | 4.99 | 197,952 |
| Subdivisions by Country | 0 | - | 4.86 | 50,239 |
| Megadiverse Countries | 0 | - | 4.96 | 134,669 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,087 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,128 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,686 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,975 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,555 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,687 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,431 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,825 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,567 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,637 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,735 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,702 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,917 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,265 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,835 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,500 |
| World Map Quiz | 0 | - | 4.81 | 64,287 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,899 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,866 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,251 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,790 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,509 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,996 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,386 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,568 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,719 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,194 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,186 |
| Widest Countries East to West | 0 | - | 4.92 | 129,250 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,349 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,785 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,962 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,405 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,077 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,439 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,174 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,703 |
| Countries with Double Letters | 0 | - | 4.97 | 94,757 |
| Countries that End in N | 0 | - | 4.95 | 169,167 |
| Countries with Five Letters | 0 | - | 4.96 | 276,365 |
| Countries with Six Letters | 0 | - | 4.94 | 212,083 |
| Countries with W | 0 | - | 4.97 | 159,270 |
| Countries with Z | 0 | - | 4.98 | 289,432 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,476 |
| Countries That End in U | 0 | - | 4.95 | 120,271 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,496 |
| Countries that End in O | 0 | - | 4.92 | 159,084 |
| Countries that End in R | 0 | - | 4.87 | 118,643 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,421 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,062 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,938 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,955 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,544 |
| Countries That End in Y | 0 | - | 4.90 | 185,561 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,035 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,254 |
| Countries that End in I | 0 | - | 4.94 | 134,765 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,864 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,489 |
| Countries That End in NIA | 0 | - | 4.92 | 109,411 |
| Countries That End in BIA | 0 | - | 4.93 | 148,702 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,566 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,916 |
| Countries That End in RIA | 0 | - | 4.93 | 126,431 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,508 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,350 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,025 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,363 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,973 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,242 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,568 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,100 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,988 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,122 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,682 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,362 |
| Countries that End in L | 0 | - | 4.94 | 156,437 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,464 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,128 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,768 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,634 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,689 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,496 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,940 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,477 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,924 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,392 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,124 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,900 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,321 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,555 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,578 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,069 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,817,504 |
| One Border Countries | 0 | - | 4.98 | 466,992 |
