| Warsaw Pact Countries | 0 | - | 4.83 | 84,273 |
| Independence from Whom | 0 | - | 4.99 | 209,690 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,750 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,998 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,014 |
| Countries by Founding Story | 0 | - | 4.95 | 76,540 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,506 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,172 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,871 |
| Countries by Former Name | 0 | - | 4.99 | 124,292 |
| Historical City to Country | 0 | - | 4.84 | 78,128 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,920,604 |
| Landlocked Countries | 0 | - | 4.99 | 413,635 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,716,912 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,233 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,296 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,278 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,614 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,572 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,813 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,221 |
| Former Capitals | 0 | - | 4.88 | 71,146 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,595 |
| Himalayan Countries | 0 | - | 4.95 | 135,354 |
| Andean Countries | 0 | - | 4.94 | 82,827 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,213 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,213 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,901 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,610 |
| Danube Countries | 0 | - | 4.97 | 71,080 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,768 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,539 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,484 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,401 |
| European Landlocked Countries | 0 | - | 4.99 | 145,753 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,214 |
| Countries with the Most Species | 0 | - | 4.99 | 95,241 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,344 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,844 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,197 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,370 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,958 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,576 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,953 |
| Countries in the Alps | 0 | - | 4.86 | 116,822 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,564 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,256 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,011 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,422 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,160 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,003 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,580 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,752 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,294 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,052 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,195 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,042 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,453 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,747 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,753 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,063 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,645 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,254 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,771 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,304 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,673 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,601 |
| Largest Countries By Category | 0 | - | 4.97 | 156,757 |
| Countries by Countries | 0 | - | 4.96 | 62,255 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,385 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,963 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,453 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,332 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,724 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,874 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,100 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,766 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,951 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,117 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,850 |
| Island Countries | 0 | - | 4.99 | 707,630 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,453 |
| Northernmost Countries | 0 | - | 4.99 | 357,728 |
| Countries of South America | 0 | - | 5.00 | 914,757 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,457 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,345 |
| "Land" Countries | 0 | - | 4.98 | 333,657 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,597 |
| Countries by Independence Day | 0 | - | 4.56 | 52,611 |
| Former Countries by Capital | 0 | - | 4.45 | 127,049 |
| Former Countries | 0 | - | 4.75 | 132,708 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,343 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,040 |
| Battle to Country | 0 | - | 4.91 | 52,528 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,200 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,215 |
| Countries with Megacities | 0 | - | 4.99 | 246,909 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,118 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,968 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,532 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,856 |
| Countries by Official Language | 0 | - | 4.95 | 192,769 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,130 |
| Countries in their Native Language | 0 | - | 4.99 | 196,637 |
| Subdivisions by Country | 0 | - | 4.86 | 50,064 |
| Megadiverse Countries | 0 | - | 4.97 | 133,903 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,802 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,919 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,427 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,860 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,658 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,143 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,213 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,746 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,571 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,418 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,493 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,503 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,675 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,025 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,589 |
| World Map Quiz | 0 | - | 4.81 | 63,495 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,674 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,332 |
| Countries by Road Signs | 0 | - | 4.98 | 53,099 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,349 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,989 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,953 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,763 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,853 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,062 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,278 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,946 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,337 |
| Widest Countries East to West | 0 | - | 4.92 | 128,604 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,218 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,211 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,563 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,687 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,630 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,042 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,051 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,582 |
| Countries with Double Letters | 0 | - | 4.97 | 93,394 |
| Countries that End in N | 0 | - | 4.94 | 156,876 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,688 |
| Countries with Six Letters | 0 | - | 4.93 | 210,364 |
| Countries with W | 0 | - | 4.97 | 158,226 |
| Countries with Z | 0 | - | 4.98 | 287,877 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,553 |
| Countries That End in U | 0 | - | 4.95 | 119,517 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,551 |
| Countries that End in O | 0 | - | 4.92 | 158,553 |
| Countries that End in R | 0 | - | 4.87 | 118,275 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,858 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,023 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,329 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,496 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,018 |
| Countries That End in Y | 0 | - | 4.90 | 185,204 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,370 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,691 |
| Countries that End in I | 0 | - | 4.94 | 134,411 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,198 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,194 |
| Countries That End in NIA | 0 | - | 4.92 | 109,010 |
| Countries That End in BIA | 0 | - | 4.92 | 147,718 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,060 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,483 |
| Countries That End in RIA | 0 | - | 4.93 | 126,082 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,008 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,192 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,520 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,888 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,355 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,927 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,119 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,646 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,510 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,815 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,138 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,813 |
| Countries that End in L | 0 | - | 4.94 | 155,726 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,195 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,987 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,510 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,293 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,426 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,979 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,095 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,915 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,185 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,381 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,527 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,615 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,172 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,421 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,327 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,084 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,641 |
