| Independence from Whom | 0 | - | 4.99 | 212,265 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,855 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,639 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,569 |
| Battle to Country | 0 | - | 4.91 | 53,600 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,637,054 |
| Recently Independent Countries | 0 | - | 4.98 | 159,553 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,355 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,922 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,929 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,866 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,839 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,447 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,447 |
| Countries by Former Name | 0 | - | 4.99 | 125,425 |
| Historical City to Country | 0 | - | 4.84 | 78,672 |
| Landlocked Countries | 0 | - | 4.99 | 422,661 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,578 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,498 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,095 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,992 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,938 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,567 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,333 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,964 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,365 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,670 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,463 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,806 |
| Countries with the Most Christians | 0 | - | 4.93 | 143,710 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,578 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,614 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,117 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,783,569 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,861 |
| Himalayan Countries | 0 | - | 4.95 | 139,036 |
| Andean Countries | 0 | - | 4.93 | 84,807 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,034 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,112 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,616 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,930 |
| Countries in World War I | 0 | - | 4.88 | 228,572 |
| Danube Countries | 0 | - | 4.97 | 72,100 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,130 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,501 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,457 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,949 |
| European Landlocked Countries | 0 | - | 4.99 | 147,235 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,775 |
| Countries with the Most Species | 0 | - | 4.99 | 103,311 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,497 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,897 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,633 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,752 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,599 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,321 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,744 |
| Countries in the Alps | 0 | - | 4.87 | 118,318 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,559 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,197 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,721 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,678 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,588 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,001 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,761 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,571 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,228 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,925 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,691 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,575 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,302 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,545 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,611 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,068 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,374 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,516 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,211 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,316 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,338 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,289 |
| Largest Countries By Category | 0 | - | 4.97 | 158,351 |
| Countries by Countries | 0 | - | 4.96 | 63,324 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,311 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,754 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,228 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,709 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,753 |
| Island Countries | 0 | - | 4.99 | 711,283 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,738 |
| Northernmost Countries | 0 | - | 4.99 | 362,298 |
| Countries of South America | 0 | - | 5.00 | 928,324 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,161 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,425 |
| "Land" Countries | 0 | - | 4.98 | 337,546 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,958 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,280 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,878 |
| Orthodox Countries | 0 | - | 4.92 | 132,344 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,384 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,117 |
| Monarchies of Europe | 0 | - | 4.90 | 98,427 |
| Monarchies of Asia | 0 | - | 4.97 | 71,279 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,069 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,093 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,944 |
| Countries by Independence Day | 0 | - | 4.62 | 52,792 |
| Former Countries by Capital | 0 | - | 4.45 | 127,630 |
| Former Countries | 0 | - | 4.75 | 133,979 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,103 |
| Countries with Megacities | 0 | - | 4.99 | 265,042 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,911 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,588 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,176 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,661 |
| Countries by Official Language | 0 | - | 4.95 | 195,389 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,559 |
| Countries in their Native Language | 0 | - | 4.99 | 199,172 |
| Subdivisions by Country | 0 | - | 4.87 | 50,464 |
| Megadiverse Countries | 0 | - | 4.96 | 135,074 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,211 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,391 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,273 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,131 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,218 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,342 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,235 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,695 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,170 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,831 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,930 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,246 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,003 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,396 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,529 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,407 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,413 |
| Communist Countries in History | 0 | - | 4.63 | 496,794 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,228 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,356 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,066 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,431 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,968 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,074 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,358 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,482 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,619 |
| Widest Countries East to West | 0 | - | 4.92 | 129,717 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,473 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,463 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,147 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,815 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,648 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,938 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,398 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,814 |
| Countries with Double Letters | 0 | - | 4.96 | 96,388 |
| Countries that End in N | 0 | - | 4.95 | 171,271 |
| Countries with Five Letters | 0 | - | 4.96 | 282,762 |
| Countries with Six Letters | 0 | - | 4.94 | 213,714 |
| Countries with W | 0 | - | 4.97 | 160,444 |
| Countries with Z | 0 | - | 4.98 | 291,628 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,806 |
| Countries That End in U | 0 | - | 4.95 | 120,902 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,570 |
| Countries that End in O | 0 | - | 4.92 | 159,555 |
| Countries that End in R | 0 | - | 4.87 | 119,003 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,766 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,237 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,766 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,532 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,456 |
| Countries That End in Y | 0 | - | 4.91 | 185,920 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,012 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,931 |
| Countries that End in I | 0 | - | 4.94 | 135,135 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,191 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,859 |
| Countries That End in NIA | 0 | - | 4.92 | 109,836 |
| Countries That End in BIA | 0 | - | 4.93 | 149,271 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,177 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,481 |
| Countries That End in RIA | 0 | - | 4.93 | 126,857 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,075 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,794 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,790 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,224 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,770 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,617 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,080 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,461 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,588 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,465 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,058 |
| Countries that End in L | 0 | - | 4.94 | 156,890 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,096 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,285 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,070 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,994 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,041 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,882 |
