| Countries by Former Name | 0 | - | 4.99 | 125,140 |
| Independence from Whom | 0 | - | 4.99 | 211,731 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,002 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,489 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,231 |
| Countries by Founding Story | 0 | - | 4.95 | 77,232 |
| Cities by Former Name | 0 | - | 4.83 | 91,581 |
| Recently Independent Countries | 0 | - | 4.98 | 159,259 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,934 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,272 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,876 |
| Historical City to Country | 0 | - | 4.84 | 78,540 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,466,152 |
| Landlocked Countries | 0 | - | 4.99 | 420,606 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,058 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,639 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,299 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,201 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,761 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,260 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,547 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,261 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,750 |
| Himalayan Countries | 0 | - | 4.95 | 138,111 |
| Andean Countries | 0 | - | 4.95 | 84,281 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,501 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,356 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,128 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,579 |
| Danube Countries | 0 | - | 4.97 | 71,843 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,806 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,245 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,991 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,439 |
| European Landlocked Countries | 0 | - | 4.99 | 146,978 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,390 |
| Countries with the Most Species | 0 | - | 4.99 | 103,100 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,544 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,623 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,509 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,661 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,448 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,119 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,509 |
| Countries in the Alps | 0 | - | 4.87 | 117,967 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,599 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,731 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,549 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,461 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,317 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,836 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,476 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,344 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,081 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,710 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,568 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,421 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,077 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,357 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,369 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,555 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,184 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,694 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,832 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,219 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,691 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,113 |
| Largest Countries By Category | 0 | - | 4.97 | 157,941 |
| Countries by Countries | 0 | - | 4.97 | 63,020 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,475 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,508 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,221 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,253 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,516 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,767 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,443 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,100 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,814 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,514 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,367 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,072 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,280 |
| Island Countries | 0 | - | 4.99 | 710,436 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,980 |
| Northernmost Countries | 0 | - | 4.99 | 361,265 |
| Countries of South America | 0 | - | 5.00 | 925,182 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,160 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,149 |
| "Land" Countries | 0 | - | 4.98 | 336,531 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,748 |
| Countries by Independence Day | 0 | - | 4.61 | 52,742 |
| Former Countries by Capital | 0 | - | 4.45 | 127,484 |
| Former Countries | 0 | - | 4.75 | 133,808 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,927 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,892 |
| Battle to Country | 0 | - | 4.91 | 53,355 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,777 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,484 |
| Countries with Megacities | 0 | - | 4.99 | 263,485 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,330 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,265 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,622 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,298 |
| Countries by Official Language | 0 | - | 4.95 | 194,953 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,970 |
| Countries in their Native Language | 0 | - | 4.99 | 198,469 |
| Subdivisions by Country | 0 | - | 4.86 | 50,363 |
| Megadiverse Countries | 0 | - | 4.96 | 134,894 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,814 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,266 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,849 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,061 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,923 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,942 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,568 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,045 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,357 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,798 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,097 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,873 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,254 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,420 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,714 |
| World Map Quiz | 0 | - | 4.81 | 64,883 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,441 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,200 |
| Countries by Road Signs | 0 | - | 4.98 | 53,840 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,798 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,106 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,835 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,798 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,736 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,867 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,176 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,358 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,447 |
| Widest Countries East to West | 0 | - | 4.92 | 129,514 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,417 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,182 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,066 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,643 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,420 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,711 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,314 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,767 |
| Countries with Double Letters | 0 | - | 4.97 | 95,469 |
| Countries that End in N | 0 | - | 4.95 | 170,503 |
| Countries with Five Letters | 0 | - | 4.96 | 281,485 |
| Countries with Six Letters | 0 | - | 4.94 | 212,910 |
| Countries with W | 0 | - | 4.97 | 159,809 |
| Countries with Z | 0 | - | 4.98 | 290,734 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,073 |
| Countries That End in U | 0 | - | 4.95 | 120,555 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,053 |
| Countries that End in O | 0 | - | 4.92 | 159,313 |
| Countries that End in R | 0 | - | 4.87 | 118,820 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,592 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,656 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,354 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,247 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,865 |
| Countries That End in Y | 0 | - | 4.91 | 185,742 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,556 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,640 |
| Countries that End in I | 0 | - | 4.94 | 134,975 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,755 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,684 |
| Countries That End in NIA | 0 | - | 4.92 | 109,641 |
| Countries That End in BIA | 0 | - | 4.93 | 148,999 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,897 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,227 |
| Countries That End in RIA | 0 | - | 4.93 | 126,665 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,792 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,151 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,443 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,833 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,360 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,436 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,821 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,366 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,316 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,299 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,035 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,750 |
| Countries that End in L | 0 | - | 4.94 | 156,678 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,870 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,198 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,917 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,836 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,886 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,451 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,414 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,824 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,357 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,857 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,734 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,024 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,678 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,645 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,769 |
