| Independence from Whom | 0 | - | 4.99 | 210,879 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,400 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,250 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,650 |
| Recently Independent Countries | 0 | - | 4.98 | 158,422 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,211 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,212 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,903 |
| Countries by Former Name | 0 | - | 4.99 | 124,711 |
| Historical City to Country | 0 | - | 4.84 | 78,339 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,186,732 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,359 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,964 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,825 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,758 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 88,922 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,930 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,178 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,753 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,125 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,380 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,418 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,217 |
| Landlocked Countries | 0 | - | 4.99 | 416,952 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,742,737 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,309 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,446 |
| Battle to Country | 0 | - | 4.91 | 52,958 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,211 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,935 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,976 |
| Island Countries | 0 | - | 4.99 | 708,917 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,063 |
| Himalayan Countries | 0 | - | 4.95 | 136,624 |
| Andean Countries | 0 | - | 4.95 | 83,550 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,804 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,090 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,473 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,065 |
| Danube Countries | 0 | - | 4.97 | 71,464 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,270 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,872 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,219 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,208 |
| European Landlocked Countries | 0 | - | 4.99 | 146,164 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,821 |
| Countries with the Most Species | 0 | - | 4.99 | 102,151 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,947 |
| 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 | 59,183 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,829 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,212 |
| Countries in the Alps | 0 | - | 4.86 | 117,378 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,929 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,963 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,276 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,769 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,863 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,280 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,020 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,011 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,834 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,372 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,378 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,216 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,753 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,023 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,031 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,772 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,917 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,448 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,272 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,174 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,647 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,848 |
| Largest Countries By Category | 0 | - | 4.97 | 157,308 |
| Countries by Countries | 0 | - | 4.96 | 62,625 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,227 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,914 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,089 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,116 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,691 |
| Northernmost Countries | 0 | - | 4.99 | 359,515 |
| Countries of South America | 0 | - | 5.00 | 920,083 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,558 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,700 |
| "Land" Countries | 0 | - | 4.98 | 334,731 |
| Countries by Independence Day | 0 | - | 4.61 | 52,680 |
| Former Countries by Capital | 0 | - | 4.45 | 127,265 |
| Former Countries | 0 | - | 4.75 | 133,002 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,470 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,384 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,961 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,405 |
| Countries with Megacities | 0 | - | 4.99 | 249,188 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,260 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,612 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,573 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,577 |
| Countries by Official Language | 0 | - | 4.95 | 194,077 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,854 |
| Countries in their Native Language | 0 | - | 4.99 | 197,688 |
| Subdivisions by Country | 0 | - | 4.86 | 50,213 |
| Megadiverse Countries | 0 | - | 4.96 | 134,570 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,900 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,088 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,643 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,955 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,470 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,572 |
| 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 | 76,352 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,594 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,697 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,662 |
| 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 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,458 |
| World Map Quiz | 0 | - | 4.81 | 64,145 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,552 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,732 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,104 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,695 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,425 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,772 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,300 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,489 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,653 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,160 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,665 |
| Widest Countries East to West | 0 | - | 4.92 | 129,171 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,334 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,695 |
| 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 | 148,005 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,386 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,128 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,682 |
| Countries with Double Letters | 0 | - | 4.96 | 94,231 |
| Countries that End in N | 0 | - | 4.95 | 167,514 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,697 |
| Countries with Six Letters | 0 | - | 4.93 | 211,223 |
| Countries with W | 0 | - | 4.97 | 158,903 |
| Countries with Z | 0 | - | 4.98 | 288,890 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,109 |
| Countries That End in U | 0 | - | 4.95 | 119,984 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,221 |
| Countries that End in O | 0 | - | 4.92 | 158,913 |
| Countries that End in R | 0 | - | 4.87 | 118,540 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,308 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,823 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,786 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,842 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,420 |
| Countries That End in Y | 0 | - | 4.90 | 185,456 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,890 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,121 |
| Countries that End in I | 0 | - | 4.94 | 134,701 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,736 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,425 |
| Countries That End in NIA | 0 | - | 4.92 | 109,316 |
| Countries That End in BIA | 0 | - | 4.93 | 148,603 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,454 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,801 |
| Countries That End in RIA | 0 | - | 4.93 | 126,367 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,368 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,157 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,892 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,227 |
| 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 | 52,471 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,978 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,869 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,035 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,552 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,246 |
| Countries that End in L | 0 | - | 4.94 | 156,320 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,031 |
| 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 | 118,583 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,633 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,371 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,831 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,379 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,857 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,288 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,063 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,881 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,301 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,532 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,531 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,005 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,814,723 |
| One Border Countries | 0 | - | 4.98 | 466,578 |
