| Independence from Whom | 0 | - | 4.99 | 211,072 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,518 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,300 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,785 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,414 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,133 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,226 |
| Recently Independent Countries | 0 | - | 4.98 | 158,620 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,355 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,445 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,109 |
| Countries by Former Name | 0 | - | 4.99 | 124,803 |
| Historical City to Country | 0 | - | 4.84 | 78,381 |
| Five Most Elevated Countries by Continent | 0 | - | 4.98 | 112,740 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 120,485 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,246,094 |
| Landlocked Countries | 0 | - | 4.99 | 417,689 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,748,776 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,170 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,981 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 75,981 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 91,816 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,081 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,350 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,962 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,394 |
| Himalayan Countries | 0 | - | 4.94 | 136,907 |
| Andean Countries | 0 | - | 4.95 | 83,675 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,938 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,265 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,599 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,184 |
| Danube Countries | 0 | - | 4.97 | 71,530 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,365 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,944 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,406 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,465 |
| European Landlocked Countries | 0 | - | 4.99 | 146,343 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,957 |
| Countries with the Most Species | 0 | - | 4.99 | 102,626 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,083 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,187 |
| 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 | 59,228 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,886 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,269 |
| Countries in the Alps | 0 | - | 4.86 | 117,496 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,008 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,127 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,335 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,853 |
| 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 | 100,125 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,085 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,885 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,433 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,419 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,270 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,826 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,099 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,110 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,941 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,974 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,503 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,367 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,691 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,887 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,910 |
| Largest Countries By Category | 0 | - | 4.97 | 157,446 |
| Countries by Countries | 0 | - | 4.96 | 62,720 |
| Five Least Guessed Countries by Continent | 0 | - | 4.97 | 97,912 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,035 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,421 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,120 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,341 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,201 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,485 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,880 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,451 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,929 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,269 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,469 |
| Island Countries | 0 | - | 4.99 | 709,266 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,720 |
| Northernmost Countries | 0 | - | 4.99 | 359,935 |
| Countries of South America | 0 | - | 5.00 | 921,291 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,003 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,862,512 |
| "Land" Countries | 0 | - | 4.98 | 335,446 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,468 |
| Countries by Independence Day | 0 | - | 4.61 | 52,697 |
| Former Countries by Capital | 0 | - | 4.45 | 127,304 |
| Former Countries | 0 | - | 4.75 | 133,067 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,990 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,540 |
| Battle to Country | 0 | - | 4.91 | 53,040 |
| Five Most Guessed Countries by Continent | 0 | - | 4.97 | 172,206 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,680 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,630 |
| Countries with Megacities | 0 | - | 4.99 | 249,669 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,467 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,752 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,802 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,724 |
| Countries by Official Language | 0 | - | 4.95 | 194,410 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,232 |
| Countries in their Native Language | 0 | - | 4.99 | 197,972 |
| Subdivisions by Country | 0 | - | 4.86 | 50,241 |
| Megadiverse Countries | 0 | - | 4.96 | 134,680 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,103 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,138 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,692 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,982 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,566 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,705 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,433 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,851 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,586 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,646 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,776 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,712 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,950 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,271 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,860 |
| World Map Quiz | 0 | - | 4.81 | 64,309 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,890 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,270 |
| 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 | 201,011 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,399 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,580 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,736 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,202 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,191 |
| Widest Countries East to West | 0 | - | 4.92 | 129,254 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,354 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,796 |
| 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 | 94,425 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,089 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,447 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,179 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,704 |
| Countries with Double Letters | 0 | - | 4.97 | 94,795 |
| Countries that End in N | 0 | - | 4.95 | 169,268 |
| Countries with Five Letters | 0 | - | 4.96 | 277,016 |
| Countries with Six Letters | 0 | - | 4.94 | 212,142 |
| Countries with W | 0 | - | 4.97 | 159,304 |
| Countries with Z | 0 | - | 4.98 | 289,486 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,501 |
| Countries That End in U | 0 | - | 4.95 | 120,293 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,528 |
| Countries that End in O | 0 | - | 4.92 | 159,107 |
| Countries that End in R | 0 | - | 4.87 | 118,655 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,437 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,099 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,960 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,975 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,559 |
| Countries That End in Y | 0 | - | 4.90 | 185,576 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,058 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,272 |
| Countries that End in I | 0 | - | 4.94 | 134,784 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,890 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,504 |
| Countries That End in NIA | 0 | - | 4.92 | 109,423 |
| Countries That End in BIA | 0 | - | 4.93 | 148,722 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,580 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,934 |
| Countries That End in RIA | 0 | - | 4.93 | 126,441 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,520 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,383 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,051 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,394 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,984 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,249 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,577 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,112 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,008 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,126 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,378 |
| Countries that End in L | 0 | - | 4.94 | 156,450 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,511 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,130 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,780 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,643 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,698 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,519 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,959 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,487 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,936 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,413 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,213 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,901 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,324 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,562 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,582 |
