| Black Sea Countries | 0 | - | 4.87 | 57,677 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 61,744 |
| Caspian Sea Countries | 0 | - | 4.92 | 59,383 |
| Countries With No Rivers | 0 | - | 4.96 | 70,052 |
| Countries with the Shortest Coastlines | 0 | - | 4.81 | 54,807 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 393,003 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,512 |
| Countries with Fjords | 0 | - | 4.92 | 79,371 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.98 | 106,538 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 69,010 |
| Capital Cities by Body of Water | 0 | - | 4.87 | 53,689 |
| Megadiverse Countries | 0 | - | 4.96 | 126,773 |
| Countries with Wild Tigers | 0 | - | 4.95 | 112,357 |
| Countries with Wild Penguins | 0 | - | 4.93 | 91,284 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.89 | 79,654 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,732,568 |
| Top 10 American Countries by Coastline | 0 | - | 4.95 | 83,948 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 334,030 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 35,137 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,167,659 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,226,174 |
| Countries with the Most Sheep | 0 | - | 4.88 | 83,061 |
| Members of the Arab League | 0 | - | 4.86 | 66,191 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,402 |
| Himalayan Countries | 0 | - | 4.94 | 108,337 |
| Andean Countries | 0 | - | 4.91 | 60,135 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,326 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,814 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,420 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,831 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,235 |
| Danube Countries | 0 | - | 4.96 | 57,211 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,221 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,287 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,676 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,374 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,986 |
| European Landlocked Countries | 0 | - | 4.99 | 137,023 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,785 |
| Countries with the Most Species | 0 | - | 4.99 | 89,852 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,325 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,012 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,311 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,044 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,875 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,113 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,901 |
| Countries in the Alps | 0 | - | 4.84 | 103,831 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,415 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,461 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,269 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,353 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,883 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,330 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,522 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,765 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,684 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,400 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,159 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,017 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,021 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,559 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,648 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,223 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,495 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,947 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,016 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 202,347 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,320 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,820 |
| Largest Countries By Category | 0 | - | 4.97 | 146,399 |
| Countries by Countries | 0 | - | 4.95 | 55,577 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,586 |
| Countries that Catch the Most Fish | 0 | - | 4.88 | 102,725 |
| Countries with the Most Wolves | 0 | - | 4.88 | 79,771 |
| Seas on the World Map | 0 | - | 4.97 | 123,294 |
| Seas of the World | 0 | - | 5.00 | 131,307 |
| Countries With Two or More Bear Species | 0 | - | 4.89 | 19,078 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 344,892 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 362,396 |
| Island Countries Quiz | 0 | - | 4.99 | 668,377 |
| Biggest Countries by Area | 0 | - | 5.00 | 946,935 |
| Northernmost Countries | 0 | - | 4.99 | 330,820 |
| Countries of South America | 0 | - | 5.00 | 809,421 |
| Countries of Oceania | 0 | - | 5.00 | 912,923 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,609,869 |
| Biggest City by River | 0 | - | 4.42 | 51,154 |
| Cities on a Map of the Great Lakes | 0 | - | 4.42 | 41,560 |
| Landforms by Country Quiz | 0 | - | 4.54 | 51,320 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.71 | 34,091 |
| African Great Lakes | 0 | - | 4.85 | 54,996 |
| Seas of Europe | 0 | - | 4.34 | 80,201 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,328,130 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,214 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 128,931 |
| Countries with Megacities | 0 | - | 4.99 | 201,696 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,224 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,885 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 98,142 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,796 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 252,805 |
| Countries by Official Language | 0 | - | 4.96 | 175,147 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,080 |
| Countries in their Native Language | 0 | - | 4.98 | 180,471 |
| Independence from Whom | 0 | - | 4.99 | 189,262 |
| Subdivisions by Country | 0 | - | 4.84 | 46,877 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,555 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 93,822 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,554 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,794 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,274 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,869 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,579 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,014 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,692 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,840 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,018 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,237 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,914 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,437 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,376 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,998 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,114,968 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,275 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,679 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,631 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,615 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 109,886 |
| Countries With the Most Languages | 0 | - | 4.90 | 177,593 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,653 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,011 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 88,199 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 55,043 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,524 |
| Widest Countries East to West | 0 | - | 4.93 | 120,492 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,107 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,464 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,798 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,385 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,588 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,588 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,432 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,788 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,399 |
| Countries with Double Letters | 0 | - | 4.96 | 71,718 |
| Countries that End in N | 0 | - | 4.94 | 135,885 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 233,724 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 190,439 |
| Countries with W | 0 | - | 4.96 | 125,578 |
| Countries with Z | 0 | - | 4.98 | 264,519 |
| Countries with Letters Missing | 0 | - | 4.97 | 169,624 |
| Countries That End in U | 0 | - | 4.95 | 109,297 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,286 |
| Countries that End in O | 0 | - | 4.92 | 148,602 |
| Countries that End in R | 0 | - | 4.85 | 97,285 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,055 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,044 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,628 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,646 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,584 |
| Countries That End in Y | 0 | - | 4.90 | 162,375 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,902 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,322 |
| Countries that End in I | 0 | - | 4.92 | 115,183 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,560 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,347 |
| Countries That End in NIA | 0 | - | 4.92 | 101,775 |
| Countries That End in BIA | 0 | - | 4.91 | 127,250 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,072 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 110,923 |
| Countries That End in RIA | 0 | - | 4.90 | 101,860 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,690 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 204,412 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,528 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,649 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,218 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,860 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,790 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,098 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,651 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,416 |
| Countries that End in L | 0 | - | 4.95 | 135,788 |
| "Land" Countries | 0 | - | 4.98 | 292,202 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,192 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,853 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,309 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,025 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,567 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 210,962 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 170,777 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,752 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,830 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,289 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,506 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,589 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,270 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,238 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,342 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,466,516 |
| One Border Countries | 0 | - | 4.98 | 415,561 |
