| Independence from Whom | 0 | - | 4.99 | 211,074 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,521 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,300 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,788 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,414 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,142 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,227 |
| Recently Independent Countries | 0 | - | 4.98 | 158,649 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,360 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,450 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,112 |
| Countries by Former Name | 0 | - | 4.99 | 124,803 |
| Historical City to Country | 0 | - | 4.84 | 78,382 |
| Five Most Elevated Countries by Continent | 0 | - | 4.98 | 112,740 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 120,494 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,247,377 |
| Landlocked Countries | 0 | - | 4.99 | 417,714 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,748,920 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,176 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,982 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 75,984 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 91,835 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,081 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,351 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,964 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,405 |
| Himalayan Countries | 0 | - | 4.94 | 136,913 |
| Andean Countries | 0 | - | 4.95 | 83,676 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,940 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,270 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,603 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,188 |
| Danube Countries | 0 | - | 4.97 | 71,531 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,365 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,945 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,409 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,469 |
| European Landlocked Countries | 0 | - | 4.99 | 146,365 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,959 |
| Countries with the Most Species | 0 | - | 4.99 | 102,633 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,085 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,188 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,378 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,550 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,230 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,889 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,271 |
| Countries in the Alps | 0 | - | 4.86 | 117,501 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,008 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,131 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,336 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,854 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,953 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,367 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,127 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,086 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,886 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,436 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,421 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,270 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,828 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,099 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,111 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,950 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,975 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,505 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,368 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,701 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,894 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,911 |
| Largest Countries By Category | 0 | - | 4.97 | 157,450 |
| Countries by Countries | 0 | - | 4.96 | 62,724 |
| Five Least Guessed Countries by Continent | 0 | - | 4.97 | 97,912 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,037 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,422 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,121 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,342 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,202 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,486 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,880 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,452 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,937 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,270 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,478 |
| Island Countries | 0 | - | 4.99 | 709,269 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,734 |
| Northernmost Countries | 0 | - | 4.99 | 359,940 |
| Countries of South America | 0 | - | 5.00 | 921,335 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,040 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,862,580 |
| "Land" Countries | 0 | - | 4.98 | 335,449 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,476 |
| Countries by Independence Day | 0 | - | 4.61 | 52,697 |
| Former Countries by Capital | 0 | - | 4.45 | 127,307 |
| Former Countries | 0 | - | 4.75 | 133,070 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,026 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,540 |
| Battle to Country | 0 | - | 4.91 | 53,041 |
| Five Most Guessed Countries by Continent | 0 | - | 4.97 | 172,206 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,683 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,632 |
| Countries with Megacities | 0 | - | 4.99 | 249,678 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,471 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,756 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,805 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,726 |
| Countries by Official Language | 0 | - | 4.95 | 194,415 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,236 |
| Countries in their Native Language | 0 | - | 4.99 | 197,977 |
| Subdivisions by Country | 0 | - | 4.86 | 50,241 |
| Megadiverse Countries | 0 | - | 4.96 | 134,681 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,104 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,139 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,692 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,983 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,568 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,710 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,436 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,853 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,590 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,647 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,782 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,712 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,957 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,273 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,863 |
| World Map Quiz | 0 | - | 4.81 | 64,311 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,892 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,276 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,799 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,522 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,015 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,404 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,581 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,738 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,204 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,192 |
| Widest Countries East to West | 0 | - | 4.92 | 129,255 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,354 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,798 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,964 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,428 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,093 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,449 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,180 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,705 |
| Countries with Double Letters | 0 | - | 4.97 | 94,800 |
| Countries that End in N | 0 | - | 4.95 | 169,277 |
| Countries with Five Letters | 0 | - | 4.96 | 277,116 |
| Countries with Six Letters | 0 | - | 4.94 | 212,144 |
| Countries with W | 0 | - | 4.97 | 159,305 |
| Countries with Z | 0 | - | 4.98 | 289,489 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,503 |
| Countries That End in U | 0 | - | 4.95 | 120,294 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,529 |
| Countries that End in O | 0 | - | 4.92 | 159,109 |
| Countries that End in R | 0 | - | 4.87 | 118,656 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,437 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,102 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,964 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,977 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,561 |
| Countries That End in Y | 0 | - | 4.90 | 185,578 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,060 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,274 |
| Countries that End in I | 0 | - | 4.94 | 134,788 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,892 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,504 |
| Countries That End in NIA | 0 | - | 4.92 | 109,424 |
| Countries That End in BIA | 0 | - | 4.93 | 148,725 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,583 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,937 |
| Countries That End in RIA | 0 | - | 4.93 | 126,441 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,523 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,389 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,055 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,396 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,985 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,249 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,578 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,115 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,009 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,127 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,379 |
| Countries that End in L | 0 | - | 4.94 | 156,450 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,518 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,131 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,782 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,643 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,699 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,524 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,963 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,489 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,944 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,414 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,237 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,901 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,325 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,562 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,583 |
