| Countries by Former Name | 0 | - | 4.99 | 125,133 |
| Independence from Whom | 0 | - | 4.99 | 211,721 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,988 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,485 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,225 |
| Countries by Founding Story | 0 | - | 4.95 | 77,225 |
| Cities by Former Name | 0 | - | 4.83 | 91,576 |
| Recently Independent Countries | 0 | - | 4.98 | 159,252 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,925 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,255 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,856 |
| Historical City to Country | 0 | - | 4.84 | 78,537 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,461,688 |
| Landlocked Countries | 0 | - | 4.99 | 420,553 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,776 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,634 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,290 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,199 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,755 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,253 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,544 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,253 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,717 |
| Himalayan Countries | 0 | - | 4.95 | 138,090 |
| Andean Countries | 0 | - | 4.95 | 84,270 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,488 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,336 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,121 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,565 |
| Danube Countries | 0 | - | 4.97 | 71,836 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,798 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,238 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,977 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,426 |
| European Landlocked Countries | 0 | - | 4.99 | 146,966 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,380 |
| Countries with the Most Species | 0 | - | 4.99 | 103,092 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,533 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,604 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,508 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,659 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,444 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,116 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,506 |
| Countries in the Alps | 0 | - | 4.87 | 117,962 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,490 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,712 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,549 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,454 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,306 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,833 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,471 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,341 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,078 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,704 |
| 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 | 104,071 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,349 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,367 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,546 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,181 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,691 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,823 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,187 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,671 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,111 |
| Largest Countries By Category | 0 | - | 4.97 | 157,933 |
| Countries by Countries | 0 | - | 4.97 | 63,013 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,468 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,508 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,218 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,233 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,513 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,759 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,434 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,089 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,807 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,511 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,309 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,052 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,249 |
| Island Countries | 0 | - | 4.99 | 710,396 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,899 |
| Northernmost Countries | 0 | - | 4.99 | 361,232 |
| Countries of South America | 0 | - | 5.00 | 925,131 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,068 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,986 |
| "Land" Countries | 0 | - | 4.98 | 336,438 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,743 |
| Countries by Independence Day | 0 | - | 4.61 | 52,740 |
| Former Countries by Capital | 0 | - | 4.45 | 127,483 |
| Former Countries | 0 | - | 4.75 | 133,804 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,742 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,881 |
| Battle to Country | 0 | - | 4.91 | 53,349 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,775 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,471 |
| Countries with Megacities | 0 | - | 4.99 | 263,444 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,306 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,255 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,605 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,291 |
| Countries by Official Language | 0 | - | 4.95 | 194,941 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,961 |
| Countries in their Native Language | 0 | - | 4.99 | 198,465 |
| Subdivisions by Country | 0 | - | 4.86 | 50,362 |
| Megadiverse Countries | 0 | - | 4.96 | 134,886 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,809 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,261 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,846 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,060 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,916 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,938 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,565 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,043 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,347 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,796 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,095 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,873 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,418 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,685 |
| World Map Quiz | 0 | - | 4.81 | 64,868 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,424 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,198 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,945 |
| Countries by Road Signs | 0 | - | 4.98 | 53,837 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,786 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,096 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,832 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,781 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,727 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,860 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,150 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,353 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,440 |
| Widest Countries East to West | 0 | - | 4.92 | 129,506 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,416 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,167 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,063 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,643 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,417 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,708 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,311 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,764 |
| Countries with Double Letters | 0 | - | 4.97 | 95,405 |
| Countries that End in N | 0 | - | 4.95 | 170,442 |
| Countries with Five Letters | 0 | - | 4.96 | 281,402 |
| Countries with Six Letters | 0 | - | 4.94 | 212,862 |
| Countries with W | 0 | - | 4.97 | 159,737 |
| Countries with Z | 0 | - | 4.98 | 290,669 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,999 |
| Countries That End in U | 0 | - | 4.95 | 120,529 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,025 |
| Countries that End in O | 0 | - | 4.92 | 159,298 |
| Countries that End in R | 0 | - | 4.87 | 118,811 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,583 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,641 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,341 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,231 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,850 |
| Countries That End in Y | 0 | - | 4.91 | 185,732 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,546 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,631 |
| Countries that End in I | 0 | - | 4.94 | 134,963 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,745 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,675 |
| Countries That End in NIA | 0 | - | 4.92 | 109,634 |
| Countries That End in BIA | 0 | - | 4.93 | 148,991 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,893 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,217 |
| Countries That End in RIA | 0 | - | 4.93 | 126,656 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,788 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,130 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,432 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,818 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,350 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,425 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,811 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,363 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,309 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,293 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,023 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,741 |
| Countries that End in L | 0 | - | 4.94 | 156,668 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,844 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,195 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,916 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,832 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,885 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,440 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,411 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,819 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,350 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,851 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,731 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,020 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,643 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,768 |
