| Independence from Whom | 0 | - | 4.99 | 189,695 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,862 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,969 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,803 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 146,639 |
| Countries of the World in 1900 | 0 | - | 4.88 | 68,705 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 173,923 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 131,060 |
| Countries by Former Name | 0 | - | 4.99 | 115,714 |
| Historical City to Country | 0 | - | 4.82 | 73,158 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,843,712 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 335,367 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,985 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 111,054 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,431 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 77,093 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,311 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,710 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,288 |
| Countries Settled by Vikings | 0 | - | 4.93 | 113,138 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,182,637 |
| Warsaw Pact Countries | 0 | - | 4.83 | 80,970 |
| Countries of Europe in 1444 | 0 | - | 4.93 | 88,844 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,236,128 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,676 |
| Members of the Arab League | 0 | - | 4.86 | 66,648 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,792 |
| Himalayan Countries | 0 | - | 4.94 | 108,732 |
| Andean Countries | 0 | - | 4.91 | 60,399 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,591 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,995 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,628 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,929 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,372 |
| Danube Countries | 0 | - | 4.96 | 57,293 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,289 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,346 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,847 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,522 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,188 |
| European Landlocked Countries | 0 | - | 4.99 | 137,295 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,944 |
| Countries with the Most Species | 0 | - | 4.99 | 90,095 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,470 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,066 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,358 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,151 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,942 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,171 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 50,009 |
| Countries in the Alps | 0 | - | 4.84 | 103,994 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,567 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,810 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,375 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,482 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 95,002 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,432 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,656 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,836 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,753 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,495 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,255 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,082 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,069 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,674 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,760 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,335 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,846 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 62,035 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,126 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 203,319 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,714 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,900 |
| Largest Countries By Category | 0 | - | 4.97 | 146,588 |
| Countries by Countries | 0 | - | 4.95 | 55,711 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 70,310 |
| Battle to Country | 0 | - | 4.92 | 36,886 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,266 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,780 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 114,699 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,540 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 363,364 |
| Island Countries Quiz | 0 | - | 4.99 | 669,458 |
| Biggest Countries by Area | 0 | - | 5.00 | 948,988 |
| Northernmost Countries | 0 | - | 4.99 | 331,215 |
| Countries of South America | 0 | - | 5.00 | 811,649 |
| Countries of Oceania | 0 | - | 5.00 | 915,604 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,615,148 |
| Countries by Independence Day | 0 | - | 4.63 | 44,763 |
| Former Countries by Capital | 0 | - | 4.44 | 105,245 |
| Former Countries | 0 | - | 4.72 | 126,121 |
| Guerrillas by Country | 0 | - | 4.45 | 38,952 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 95,628 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.90 | 82,655 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,330,544 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,730 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,326 |
| Countries with Megacities | 0 | - | 4.99 | 202,219 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,693 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,127 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,484 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,074 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,562 |
| Countries by Official Language | 0 | - | 4.96 | 175,464 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,901 |
| Countries in their Native Language | 0 | - | 4.98 | 180,819 |
| Subdivisions by Country | 0 | - | 4.85 | 46,944 |
| Megadiverse Countries | 0 | - | 4.96 | 126,898 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 94,130 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,682 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,867 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,496 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,107 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,782 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,885 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,227 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,336 |
| Countries Furthest from the United States | 0 | - | 4.94 | 73,026 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,569 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,467 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,094 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,122,269 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,966 |
| World Map Quiz | 0 | - | 4.90 | 51,653 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,842 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,993 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,968 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 110,349 |
| Countries With the Most Languages | 0 | - | 4.90 | 178,104 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,789 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,202 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 88,433 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 55,195 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,697 |
| Widest Countries East to West | 0 | - | 4.93 | 120,663 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,147 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,710 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,912 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,473 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,957 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,767 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,607 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,826 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,447 |
| Countries with Double Letters | 0 | - | 4.96 | 72,542 |
| Countries that End in N | 0 | - | 4.94 | 136,781 |
| Countries with Five Letters Quiz | 0 | - | 4.97 | 234,569 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 191,126 |
| Countries with W | 0 | - | 4.96 | 126,230 |
| Countries with Z | 0 | - | 4.98 | 265,257 |
| Countries with Letters Missing | 0 | - | 4.97 | 170,086 |
| Countries That End in U | 0 | - | 4.95 | 109,802 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,894 |
| Countries that End in O | 0 | - | 4.92 | 148,933 |
| Countries that End in R | 0 | - | 4.85 | 97,504 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,445 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,526 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,921 |
| Countries by Last Two Letters | 0 | - | 4.89 | 117,850 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,789 |
| Countries That End in Y | 0 | - | 4.92 | 177,493 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,187 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,754 |
| Countries that End in I | 0 | - | 4.92 | 115,312 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,814 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,492 |
| Countries That End in NIA | 0 | - | 4.92 | 101,929 |
| Countries That End in BIA | 0 | - | 4.91 | 127,459 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,331 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 111,093 |
| Countries That End in RIA | 0 | - | 4.90 | 102,006 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 101,912 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 205,141 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,878 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 113,022 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,522 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 41,290 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,953 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,304 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,789 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,663 |
| Countries that End in L | 0 | - | 4.95 | 136,002 |
| "Land" Countries | 0 | - | 4.98 | 292,572 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,439 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,943 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,469 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,145 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,726 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,332 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,192 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,947 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 135,056 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,623 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,697 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,671 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,402 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,343 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,461 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,476,463 |
| One Border Countries | 0 | - | 4.98 | 416,247 |
