| Warsaw Pact Countries | 0 | - | 4.83 | 84,564 |
| Recently Independent Countries | 0 | - | 4.98 | 159,463 |
| Independence from Whom | 0 | - | 4.99 | 212,074 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,718 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,593 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,460 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,219 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,709 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,275 |
| Countries by Former Name | 0 | - | 4.99 | 125,329 |
| Historical City to Country | 0 | - | 4.84 | 78,631 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,578,496 |
| Landlocked Countries | 0 | - | 4.99 | 421,916 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,855 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,489 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,297 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,902 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,332 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,637 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,399 |
| Former Capitals | 0 | - | 4.88 | 71,514 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,750 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,592 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,002 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,243 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,905 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,408 |
| Himalayan Countries | 0 | - | 4.94 | 138,692 |
| Andean Countries | 0 | - | 4.93 | 84,591 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,787 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,792 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,410 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,797 |
| Danube Countries | 0 | - | 4.97 | 72,001 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,007 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,418 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,291 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,772 |
| European Landlocked Countries | 0 | - | 4.99 | 147,138 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,628 |
| Countries with the Most Species | 0 | - | 4.99 | 103,240 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,753 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,590 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,721 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,538 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,222 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,655 |
| Countries in the Alps | 0 | - | 4.87 | 118,195 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,080 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,025 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,639 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,593 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,504 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,945 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,669 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,487 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,176 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,839 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,650 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,521 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,218 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,463 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,514 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,893 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,304 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,705 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,064 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,901 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,083 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,224 |
| Largest Countries By Category | 0 | - | 4.97 | 158,200 |
| Countries by Countries | 0 | - | 4.96 | 63,219 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,036 |
| Battle to Country | 0 | - | 4.91 | 53,500 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,674 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,284 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,565 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,672 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,533 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,486 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,170 |
| Island Countries | 0 | - | 4.99 | 711,026 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,557 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,794 |
| Northernmost Countries | 0 | - | 4.99 | 361,938 |
| Countries of South America | 0 | - | 5.00 | 927,269 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,751 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,097 |
| "Land" Countries | 0 | - | 4.98 | 337,319 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 86,126 |
| Countries by Independence Day | 0 | - | 4.61 | 52,775 |
| Former Countries by Capital | 0 | - | 4.45 | 127,583 |
| Former Countries | 0 | - | 4.75 | 133,909 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,235 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,090 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,953 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,871 |
| Countries with Megacities | 0 | - | 4.99 | 264,510 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,727 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,460 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,984 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,534 |
| Countries by Official Language | 0 | - | 4.95 | 195,235 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,357 |
| Countries in their Native Language | 0 | - | 4.99 | 199,031 |
| Subdivisions by Country | 0 | - | 4.86 | 50,430 |
| Megadiverse Countries | 0 | - | 4.96 | 135,006 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,074 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,346 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,233 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,097 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,132 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,029 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,652 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,145 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,660 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,877 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,199 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,960 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,344 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,493 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,165 |
| World Map Quiz | 0 | - | 4.81 | 65,072 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,261 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,344 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,082 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,272 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,991 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,173 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,881 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,004 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,293 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,435 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,567 |
| Widest Countries East to West | 0 | - | 4.92 | 129,634 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,451 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,367 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,117 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,764 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,593 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,864 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,371 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,796 |
| Countries with Double Letters | 0 | - | 4.96 | 96,220 |
| Countries that End in N | 0 | - | 4.95 | 171,095 |
| Countries with Five Letters | 0 | - | 4.96 | 282,413 |
| Countries with Six Letters | 0 | - | 4.94 | 213,522 |
| Countries with W | 0 | - | 4.97 | 160,309 |
| Countries with Z | 0 | - | 4.98 | 291,421 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,681 |
| Countries That End in U | 0 | - | 4.95 | 120,844 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,444 |
| Countries that End in O | 0 | - | 4.92 | 159,503 |
| Countries that End in R | 0 | - | 4.87 | 118,961 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,724 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,061 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,681 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,464 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,386 |
| Countries That End in Y | 0 | - | 4.91 | 185,865 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,898 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,842 |
| Countries that End in I | 0 | - | 4.94 | 135,085 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,082 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,815 |
| Countries That End in NIA | 0 | - | 4.92 | 109,778 |
| Countries That End in BIA | 0 | - | 4.93 | 149,186 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,110 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,415 |
| Countries That End in RIA | 0 | - | 4.93 | 126,800 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,010 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,570 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,684 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,095 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,658 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,567 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,010 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,438 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,514 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,407 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,269 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,969 |
| Countries that End in L | 0 | - | 4.94 | 156,831 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,691 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,260 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,012 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,944 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,988 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,725 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,632 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,981 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,522 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,414 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,849 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,095 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,703 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,867 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,834,557 |
| One Border Countries | 0 | - | 4.98 | 469,846 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,631,920 |
