| Independence from Whom | 0 | - | 4.99 | 209,624 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,705 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,986 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,880 |
| Recently Independent Countries | 0 | - | 4.98 | 157,961 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,453 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,105 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,798 |
| Countries by Former Name | 0 | - | 4.99 | 124,257 |
| Historical City to Country | 0 | - | 4.84 | 78,115 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,900,848 |
| Landlocked Countries | 0 | - | 4.99 | 413,378 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,174 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,261 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,237 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,579 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,543 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,780 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,183 |
| Countries in World War I | 0 | - | 4.88 | 226,564 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,371 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,824 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,265 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,318 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,688 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,580 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,568 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,484 |
| Himalayan Countries | 0 | - | 4.95 | 135,269 |
| Andean Countries | 0 | - | 4.94 | 82,782 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,191 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,136 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,854 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,561 |
| Danube Countries | 0 | - | 4.97 | 71,060 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,727 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,514 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,418 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,342 |
| European Landlocked Countries | 0 | - | 4.99 | 145,727 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,167 |
| Countries with the Most Species | 0 | - | 4.99 | 95,231 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,306 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,192 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,358 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,947 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,560 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,932 |
| Countries in the Alps | 0 | - | 4.86 | 116,782 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,532 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,212 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,991 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,400 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,129 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,975 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,545 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,731 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,164 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,029 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,187 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,027 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,427 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,718 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,730 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,014 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,617 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,241 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,745 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,153 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,578 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,586 |
| Largest Countries By Category | 0 | - | 4.97 | 156,716 |
| Countries by Countries | 0 | - | 4.96 | 62,237 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,003 |
| Battle to Country | 0 | - | 4.91 | 52,498 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,343 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,957 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,733 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,580 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,047 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,716 |
| Island Countries | 0 | - | 4.99 | 707,523 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,654 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,178 |
| Northernmost Countries | 0 | - | 4.99 | 357,597 |
| Countries of South America | 0 | - | 5.00 | 914,317 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,978 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,511 |
| "Land" Countries | 0 | - | 4.98 | 333,578 |
| Countries by Independence Day | 0 | - | 4.56 | 52,599 |
| Former Countries by Capital | 0 | - | 4.45 | 127,030 |
| Former Countries | 0 | - | 4.75 | 132,674 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,756 |
| Communist Countries in History | 0 | - | 4.63 | 492,418 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,648 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,523 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,053 |
| Countries with Megacities | 0 | - | 4.99 | 246,628 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,980 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,837 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,407 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,779 |
| Countries by Official Language | 0 | - | 4.95 | 192,723 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,056 |
| Countries in their Native Language | 0 | - | 4.99 | 196,589 |
| Subdivisions by Country | 0 | - | 4.86 | 50,054 |
| Megadiverse Countries | 0 | - | 4.97 | 133,876 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,754 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,907 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,409 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,853 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,624 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,128 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,206 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,734 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,517 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,402 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,478 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,489 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,651 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,008 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,522 |
| World Map Quiz | 0 | - | 4.81 | 63,469 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,537 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,301 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,295 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,959 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,915 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,668 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,829 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,037 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,249 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,929 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,318 |
| Widest Countries East to West | 0 | - | 4.92 | 128,587 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,213 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,178 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,556 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,674 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,609 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,020 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,047 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,570 |
| Countries with Double Letters | 0 | - | 4.97 | 93,341 |
| Countries that End in N | 0 | - | 4.94 | 156,493 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,627 |
| Countries with Six Letters | 0 | - | 4.93 | 210,302 |
| Countries with W | 0 | - | 4.97 | 158,196 |
| Countries with Z | 0 | - | 4.98 | 287,818 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,513 |
| Countries That End in U | 0 | - | 4.95 | 119,496 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,497 |
| Countries that End in O | 0 | - | 4.92 | 158,532 |
| Countries that End in R | 0 | - | 4.87 | 118,256 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,849 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,973 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,291 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,466 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,981 |
| Countries That End in Y | 0 | - | 4.90 | 185,188 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,328 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,640 |
| Countries that End in I | 0 | - | 4.94 | 134,391 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,140 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,178 |
| Countries That End in NIA | 0 | - | 4.92 | 108,985 |
| Countries That End in BIA | 0 | - | 4.92 | 147,687 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,039 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,465 |
| Countries That End in RIA | 0 | - | 4.93 | 126,063 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,980 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,133 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,498 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,874 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,334 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,916 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,093 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,624 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,475 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,805 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,783 |
| Countries that End in L | 0 | - | 4.94 | 155,700 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,051 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,979 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,499 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,276 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,411 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,772 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,049 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,895 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,150 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,340 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,497 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,603 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,164 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,414 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,304 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,800,128 |
| One Border Countries | 0 | - | 4.98 | 464,226 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,586,693 |
