| Independence from Whom | 0 | - | 4.99 | 210,508 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,262 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,191 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,517 |
| Countries by Founding Story | 0 | - | 4.95 | 76,835 |
| Recently Independent Countries | 0 | - | 4.98 | 158,335 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,084 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,031 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,731 |
| Countries by Former Name | 0 | - | 4.99 | 124,639 |
| Historical City to Country | 0 | - | 4.84 | 78,304 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,136,326 |
| Landlocked Countries | 0 | - | 4.99 | 416,313 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,738,157 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,736 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,636 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,510 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,869 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,743 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,999 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,505 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,774 |
| Himalayan Countries | 0 | - | 4.95 | 136,369 |
| Andean Countries | 0 | - | 4.95 | 83,407 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,671 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,897 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,363 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,966 |
| Danube Countries | 0 | - | 4.97 | 71,364 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,156 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,818 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,085 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,036 |
| European Landlocked Countries | 0 | - | 4.99 | 146,095 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,704 |
| Countries with the Most Species | 0 | - | 4.99 | 100,312 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,850 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,066 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,313 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,489 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,132 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,786 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,157 |
| Countries in the Alps | 0 | - | 4.86 | 117,289 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,871 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,813 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,233 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,706 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,769 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,222 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,948 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,971 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,772 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,304 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,339 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,189 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,696 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,967 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,975 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,641 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,868 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,404 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,191 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,801 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,484 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,792 |
| Largest Countries By Category | 0 | - | 4.97 | 157,211 |
| Countries by Countries | 0 | - | 4.96 | 62,563 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,830 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,353 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,068 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,231 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,404 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,146 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,101 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,611 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,366 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,055 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,555 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,676 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,517 |
| Island Countries | 0 | - | 4.99 | 708,699 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,921 |
| Northernmost Countries | 0 | - | 4.99 | 359,197 |
| Countries of South America | 0 | - | 5.00 | 919,205 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,056 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,546 |
| "Land" Countries | 0 | - | 4.98 | 334,396 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,879 |
| Countries by Independence Day | 0 | - | 4.61 | 52,668 |
| Former Countries by Capital | 0 | - | 4.45 | 127,228 |
| Former Countries | 0 | - | 4.75 | 132,939 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,617 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,387 |
| Battle to Country | 0 | - | 4.91 | 52,873 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,435 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,176 |
| Countries with Megacities | 0 | - | 4.99 | 248,747 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,040 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,493 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,414 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,442 |
| Countries by Official Language | 0 | - | 4.95 | 193,899 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,391 |
| Countries in their Native Language | 0 | - | 4.99 | 197,542 |
| Subdivisions by Country | 0 | - | 4.86 | 50,182 |
| Megadiverse Countries | 0 | - | 4.96 | 134,517 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,742 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,064 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,614 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,939 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,407 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,520 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,353 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,801 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,116 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,566 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,665 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,629 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,835 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,184 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,422 |
| World Map Quiz | 0 | - | 4.81 | 64,003 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,183 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,663 |
| Countries by Road Signs | 0 | - | 4.98 | 53,373 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,996 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,626 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,358 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,610 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,226 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,422 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,596 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,129 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,616 |
| Widest Countries East to West | 0 | - | 4.92 | 129,116 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,319 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,605 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,899 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,931 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,950 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,327 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,031 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,663 |
| Countries with Double Letters | 0 | - | 4.96 | 93,910 |
| Countries that End in N | 0 | - | 4.94 | 160,475 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,334 |
| Countries with Six Letters | 0 | - | 4.93 | 210,934 |
| Countries with W | 0 | - | 4.97 | 158,612 |
| Countries with Z | 0 | - | 4.98 | 288,530 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,909 |
| Countries That End in U | 0 | - | 4.95 | 119,760 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,066 |
| Countries that End in O | 0 | - | 4.92 | 158,756 |
| Countries that End in R | 0 | - | 4.87 | 118,448 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,987 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,630 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,676 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,760 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,327 |
| Countries That End in Y | 0 | - | 4.90 | 185,354 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,767 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,026 |
| Countries that End in I | 0 | - | 4.94 | 134,623 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,633 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,378 |
| Countries That End in NIA | 0 | - | 4.92 | 109,254 |
| Countries That End in BIA | 0 | - | 4.93 | 148,490 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,371 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,728 |
| Countries That End in RIA | 0 | - | 4.93 | 126,292 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,279 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,985 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,806 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,158 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,725 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,105 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,385 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,899 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,791 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,965 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,467 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,136 |
| Countries that End in L | 0 | - | 4.94 | 156,235 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,714 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,045 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,696 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,536 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,598 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,243 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,765 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,237 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,783 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,200 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,017 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,858 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,280 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,502 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,487 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,410 |
