| Countries With No Rivers | 0 | - | 4.96 | 68,534 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,084 |
| Countries with Fjords | 0 | - | 4.91 | 77,568 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.98 | 104,337 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 67,477 |
| African Great Lakes | 0 | - | 4.84 | 51,944 |
| Top 10 American Countries by Coastline | 0 | - | 4.95 | 82,810 |
| Capital Cities by Body of Water | 0 | - | 4.87 | 52,950 |
| Megadiverse Countries | 0 | - | 4.96 | 124,623 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 100,051 |
| North Sea Countries | 0 | - | 4.92 | 79,592 |
| Black Sea Countries | 0 | - | 4.88 | 56,819 |
| Countries That Touch the Red Sea | 0 | - | 4.89 | 60,663 |
| Caspian Sea Countries | 0 | - | 4.91 | 58,267 |
| Countries with the Shortest Coastlines | 0 | - | 4.82 | 54,164 |
| Countries with the Longest Coastlines | 0 | - | 4.79 | 387,870 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,221 |
| Countries with Wild Penguins | 0 | - | 4.93 | 89,569 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.89 | 78,034 |
| Cities on a Map of the Great Lakes | 0 | - | 4.42 | 40,732 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,377,210 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 316,474 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 34,620 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,008,300 |
| Countries with the Most Sheep | 0 | - | 4.89 | 82,136 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 56,297 |
| Countries on the Equator | 0 | - | 4.82 | 131,713 |
| Members of the Arab League | 0 | - | 4.81 | 58,798 |
| Sahara Desert Countries | 0 | - | 4.97 | 124,889 |
| Himalayan Countries | 0 | - | 4.95 | 102,178 |
| Andean Countries | 0 | - | 4.90 | 56,750 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,571 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,487 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,783 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,449 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,635 |
| Danube Countries | 0 | - | 4.97 | 56,320 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,340 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,553 |
| Countries with the Best Passports | 0 | - | 4.86 | 70,178 |
| Countries with the Worst Passports | 0 | - | 4.86 | 48,685 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,069 |
| European Landlocked Countries | 0 | - | 4.99 | 114,786 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,633 |
| Countries with the Most Species | 0 | - | 4.99 | 89,054 |
| Countries 197 to 205 | 0 | - | 4.87 | 55,695 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,400 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,772 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,684 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,057 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,412 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,597 |
| Countries in the Alps | 0 | - | 4.82 | 101,505 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,507 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,559 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,061 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,623 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,251 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 86,788 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 88,963 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,693 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,018 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,072 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,832 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,301 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,371 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 94,859 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,425 |
| Countries with the Most Grassland | 0 | - | 4.93 | 68,888 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,349 |
| Countries with the Most Climate Zones | 0 | - | 4.97 | 60,891 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,882 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 192,049 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,060 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,894 |
| Largest Countries By Category | 0 | - | 4.96 | 143,721 |
| Countries by Countries | 0 | - | 4.95 | 53,962 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 77,184 |
| Countries that Catch the Most Fish | 0 | - | 4.88 | 100,326 |
| Countries with the Most Wolves | 0 | - | 4.88 | 78,026 |
| Countries With Two or More Bear Species | 0 | - | 4.89 | 18,552 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,156 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 351,061 |
| Island Countries Quiz | 0 | - | 4.99 | 637,486 |
| Biggest Countries by Area | 0 | - | 5.00 | 923,351 |
| Northernmost Countries | 0 | - | 4.99 | 325,017 |
| Countries of South America | 0 | - | 5.00 | 782,048 |
| Countries of Oceania | 0 | - | 5.00 | 879,816 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,100,793 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,547,674 |
| Biggest City by River | 0 | - | 4.42 | 50,705 |
| Landforms by Country Quiz | 0 | - | 4.54 | 51,214 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.76 | 33,550 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,300,448 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,205 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 123,905 |
| Countries with Megacities | 0 | - | 4.99 | 194,347 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,102 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,679 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,447 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,544 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,635 |
| Capitals by River | 0 | - | 4.64 | 44,621 |
| Countries by Official Language | 0 | - | 4.95 | 153,265 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,165 |
| Countries in their Native Language | 0 | - | 4.98 | 176,757 |
| Independence from Whom | 0 | - | 4.99 | 182,620 |
| Subdivisions by Country | 0 | - | 4.82 | 46,133 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 111,670 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 89,729 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 105,900 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,078 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 129,639 |
| Most Recently-Settled Countries | 0 | - | 4.91 | 48,550 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,432 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,216 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,423 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,926 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 42,714 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,731 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,268 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,451 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,832 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,658 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,029,740 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 79,697 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,624 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,120 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 89,984 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 106,908 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,240 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,471 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,749 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,307 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,191 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,715 |
| Widest Countries East to West | 0 | - | 4.93 | 118,378 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,660 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,750 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,050 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,679 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 117,523 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,411 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,228 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,806 |
| Countries with Double Letters | 0 | - | 4.96 | 66,362 |
| Countries that End in N | 0 | - | 4.94 | 130,755 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 227,246 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,077 |
| Countries with W | 0 | - | 4.97 | 121,067 |
| Countries with Z | 0 | - | 4.98 | 241,701 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,244 |
| Countries That End in U | 0 | - | 4.94 | 106,548 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.96 | 87,942 |
| Countries that End in O | 0 | - | 4.92 | 146,190 |
| Countries that End in R | 0 | - | 4.85 | 95,971 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,753 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,287 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,707 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,454 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,376 |
| Countries That End in Y | 0 | - | 4.90 | 160,717 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,446 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,652 |
| Countries that End in I | 0 | - | 4.92 | 114,084 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,243 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,726 |
| Countries That End in NIA | 0 | - | 4.93 | 100,225 |
| Countries That End in BIA | 0 | - | 4.91 | 125,202 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,244 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 108,923 |
| Countries That End in RIA | 0 | - | 4.89 | 100,377 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,629 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 198,347 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,474 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 109,264 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,172 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,406 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,291 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,619 |
| Countries that End in L | 0 | - | 4.95 | 133,230 |
| "Land" Countries | 0 | - | 4.98 | 287,651 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,252 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,052 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,619 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,397 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,011 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 205,944 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 156,797 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,570 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 131,459 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 191,805 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 139,844 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 65,375 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,402 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,817 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,313 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,349,596 |
| One Border Countries | 0 | - | 4.98 | 406,095 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 65,700 |
