| Countries by Former Name | 0 | - | 4.99 | 124,743 |
| Independence from Whom | 0 | - | 4.99 | 210,969 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,441 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,271 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,699 |
| Countries by Founding Story | 0 | - | 4.95 | 76,933 |
| Cities by Former Name | 0 | - | 4.84 | 91,313 |
| Recently Independent Countries | 0 | - | 4.98 | 158,455 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,262 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,300 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,993 |
| Historical City to Country | 0 | - | 4.84 | 78,362 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,210,372 |
| Landlocked Countries | 0 | - | 4.99 | 417,246 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,745,125 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,054 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,902 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 75,904 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 90,907 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,018 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,290 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,880 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,212 |
| Himalayan Countries | 0 | - | 4.95 | 136,752 |
| Andean Countries | 0 | - | 4.95 | 83,599 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,860 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,161 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,526 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,123 |
| Danube Countries | 0 | - | 4.97 | 71,486 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,298 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,902 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,295 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,291 |
| European Landlocked Countries | 0 | - | 4.99 | 146,193 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,873 |
| Countries with the Most Species | 0 | - | 4.99 | 102,371 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,000 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,147 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,355 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,535 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,204 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,856 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,234 |
| Countries in the Alps | 0 | - | 4.86 | 117,431 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,963 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,038 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,305 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,803 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,899 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,321 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,071 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,042 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,860 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,392 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,397 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,239 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,787 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,050 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,061 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,837 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,941 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,467 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,307 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,347 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,744 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,873 |
| Largest Countries By Category | 0 | - | 4.97 | 157,355 |
| Countries by Countries | 0 | - | 4.96 | 62,666 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,951 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,403 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,107 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,480 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,422 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,269 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,176 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,952 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,454 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,142 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,529 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,087 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,205 |
| Island Countries | 0 | - | 4.99 | 709,085 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,097 |
| Northernmost Countries | 0 | - | 4.99 | 359,705 |
| Countries of South America | 0 | - | 5.00 | 920,510 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,078 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,811 |
| "Land" Countries | 0 | - | 4.98 | 335,159 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,404 |
| Countries by Independence Day | 0 | - | 4.61 | 52,690 |
| Former Countries by Capital | 0 | - | 4.45 | 127,274 |
| Former Countries | 0 | - | 4.75 | 133,024 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,988 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,477 |
| Battle to Country | 0 | - | 4.91 | 52,994 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,514 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,483 |
| Countries with Megacities | 0 | - | 4.99 | 249,407 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,333 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,664 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,662 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,637 |
| Countries by Official Language | 0 | - | 4.95 | 194,231 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,047 |
| Countries in their Native Language | 0 | - | 4.99 | 197,832 |
| Subdivisions by Country | 0 | - | 4.86 | 50,223 |
| Megadiverse Countries | 0 | - | 4.96 | 134,601 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,991 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,106 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,660 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,963 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,513 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,594 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,405 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,820 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,466 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,616 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,713 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,685 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,893 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,249 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,740 |
| World Map Quiz | 0 | - | 4.81 | 64,222 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,704 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,770 |
| Countries by Road Signs | 0 | - | 4.98 | 53,483 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,182 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,737 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,471 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,881 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,343 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,521 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,683 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,178 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,101 |
| Widest Countries East to West | 0 | - | 4.92 | 129,218 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,341 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,735 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,946 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,995 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,044 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,415 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,154 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,691 |
| Countries with Double Letters | 0 | - | 4.96 | 94,546 |
| Countries that End in N | 0 | - | 4.95 | 168,606 |
| Countries with Five Letters | 0 | - | 4.96 | 272,263 |
| Countries with Six Letters | 0 | - | 4.93 | 211,804 |
| Countries with W | 0 | - | 4.97 | 159,141 |
| Countries with Z | 0 | - | 4.98 | 289,221 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,333 |
| Countries That End in U | 0 | - | 4.95 | 120,184 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,368 |
| Countries that End in O | 0 | - | 4.92 | 159,020 |
| Countries that End in R | 0 | - | 4.87 | 118,604 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,381 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,953 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,871 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,904 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,489 |
| Countries That End in Y | 0 | - | 4.90 | 185,515 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,972 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,191 |
| Countries that End in I | 0 | - | 4.94 | 134,730 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,800 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,460 |
| Countries That End in NIA | 0 | - | 4.92 | 109,355 |
| Countries That End in BIA | 0 | - | 4.93 | 148,645 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,508 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,857 |
| Countries That End in RIA | 0 | - | 4.93 | 126,395 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,439 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,239 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,963 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,290 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,917 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,196 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,518 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,044 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,921 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,089 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,616 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,318 |
| Countries that End in L | 0 | - | 4.94 | 156,372 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,230 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,103 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,748 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,607 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,663 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,433 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,894 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,426 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,885 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,341 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,099 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,890 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,315 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,542 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,553 |
