| Countries With No Rivers | 0 | - | 4.96 | 68,819 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,211 |
| Countries with Fjords | 0 | - | 4.92 | 77,769 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.98 | 104,599 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 67,640 |
| Top 10 American Countries by Coastline | 0 | - | 4.95 | 82,931 |
| Capital Cities by Body of Water | 0 | - | 4.87 | 53,050 |
| Countries That Touch the Baltic Sea | 0 | - | 4.99 | 111,291 |
| North Sea Countries | 0 | - | 4.92 | 79,898 |
| Black Sea Countries | 0 | - | 4.88 | 57,105 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 60,945 |
| Caspian Sea Countries | 0 | - | 4.91 | 58,525 |
| Countries with the Shortest Coastlines | 0 | - | 4.82 | 54,355 |
| Megadiverse Countries | 0 | - | 4.96 | 124,822 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 388,362 |
| African Great Lakes | 0 | - | 4.84 | 52,212 |
| Biggest City by River | 0 | - | 4.42 | 50,756 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,368 |
| Countries with Wild Penguins | 0 | - | 4.93 | 89,733 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.89 | 78,171 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,513,191 |
| Capitals by River | 0 | - | 4.64 | 46,795 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 34,668 |
| Countries with the Most Sheep | 0 | - | 4.89 | 82,214 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 34,719 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 318,107 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,024,709 |
| Rivers of the United States | 0 | - | 4.93 | 49,127 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.86 | 48,368 |
| Countries that Catch the Most Fish | 0 | - | 4.88 | 100,488 |
| Countries with the Most Wolves | 0 | - | 4.88 | 78,189 |
| Cities on a Map of the Great Lakes | 0 | - | 4.42 | 40,803 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,819 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 352,152 |
| Countries on the Equator | 0 | - | 4.82 | 132,893 |
| Members of the Arab League | 0 | - | 4.82 | 59,492 |
| Island Countries Quiz | 0 | - | 4.99 | 639,171 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,295 |
| Himalayan Countries | 0 | - | 4.95 | 102,646 |
| Andean Countries | 0 | - | 4.90 | 57,034 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,877 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,626 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,952 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,588 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,783 |
| Danube Countries | 0 | - | 4.97 | 56,381 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,430 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,623 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,431 |
| Countries with the Worst Passports | 0 | - | 4.87 | 48,845 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,460 |
| European Landlocked Countries | 0 | - | 4.99 | 114,863 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,813 |
| Countries with the Most Species | 0 | - | 4.99 | 89,100 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,886 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,464 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,830 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,807 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,150 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,478 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,726 |
| Countries in the Alps | 0 | - | 4.82 | 101,911 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,718 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,918 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,163 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,780 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,426 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,112 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,106 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,793 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,087 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,212 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,949 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,347 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,438 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,025 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,546 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,028 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,752 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 60,986 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,993 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 193,116 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,554 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,994 |
| Largest Countries By Category | 0 | - | 4.96 | 143,983 |
| Countries by Countries | 0 | - | 4.96 | 54,142 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,447 |
| Biggest Countries by Area | 0 | - | 5.00 | 925,681 |
| Northernmost Countries | 0 | - | 4.99 | 325,506 |
| Landforms by Country Quiz | 0 | - | 4.54 | 51,228 |
| Countries of South America | 0 | - | 5.00 | 784,588 |
| Countries of Oceania | 0 | - | 5.00 | 883,221 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,113,599 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,554,020 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.76 | 33,604 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,190 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,734 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,330 |
| Countries with Megacities | 0 | - | 4.99 | 195,003 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,662 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,969 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,834 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,816 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,363 |
| Countries by Official Language | 0 | - | 4.95 | 153,610 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 247,011 |
| Countries in their Native Language | 0 | - | 4.98 | 177,116 |
| Independence from Whom | 0 | - | 4.99 | 183,885 |
| Subdivisions by Country | 0 | - | 4.82 | 46,208 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,332 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,093 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,063 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,150 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 65,802 |
| South China Sea Countries | 0 | - | 4.82 | 53,542 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,179 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,781 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,951 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,369 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,553 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,003 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,067 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,868 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,403 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,517 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 127,566 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.91 | 88,570 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,038,403 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,833 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,482 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,214 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,164 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,810 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,634 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,946 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,567 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,367 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,908 |
| Widest Countries East to West | 0 | - | 4.93 | 118,792 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,694 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,985 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,136 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,857 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,181 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,595 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,280 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,879 |
| Countries with Double Letters | 0 | - | 4.96 | 67,127 |
| Countries that End in N | 0 | - | 4.94 | 131,569 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 228,045 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,823 |
| Countries with W | 0 | - | 4.97 | 121,831 |
| Countries with Z | 0 | - | 4.98 | 242,881 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,733 |
| Countries That End in U | 0 | - | 4.94 | 107,059 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,461 |
| Countries that End in O | 0 | - | 4.92 | 146,482 |
| Countries that End in R | 0 | - | 4.86 | 96,176 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,922 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,734 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,968 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,661 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,595 |
| Countries That End in Y | 0 | - | 4.90 | 160,859 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,769 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,935 |
| Countries that End in I | 0 | - | 4.92 | 114,206 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,561 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,868 |
| Countries That End in NIA | 0 | - | 4.93 | 100,380 |
| Countries That End in BIA | 0 | - | 4.91 | 125,446 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,479 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,122 |
| Countries That End in RIA | 0 | - | 4.89 | 100,521 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,819 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 198,954 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,766 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 109,569 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,477 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,434 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,891 |
| Countries that End in L | 0 | - | 4.95 | 133,445 |
| "Land" Countries | 0 | - | 4.98 | 288,049 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,896 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,083 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,825 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,804 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,163 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,396 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 158,215 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,760 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 131,709 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,140 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,047 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,462 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,707 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,936 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,621 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,361,349 |
| One Border Countries | 0 | - | 4.98 | 406,897 |
