| Countries With No Rivers | 0 | - | 4.96 | 76,109 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,430 |
| Countries with Fjords | 0 | - | 4.93 | 100,307 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,865 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,313 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,125 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,353 |
| Megadiverse Countries | 0 | - | 4.97 | 134,014 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,784 |
| North Sea Countries | 0 | - | 4.92 | 86,679 |
| Black Sea Countries | 0 | - | 4.87 | 60,379 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,075 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,160 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,990 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,325 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,533 |
| African Great Lakes | 0 | - | 4.82 | 65,401 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,831 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,476 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,569 |
| Biggest City by River | 0 | - | 4.41 | 52,716 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,023,231 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,960 |
| Landlocked Countries | 0 | - | 4.99 | 414,927 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,358 |
| Capitals by River | 0 | - | 4.55 | 48,247 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,727,335 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,592 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,866 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,114 |
| Himalayan Countries | 0 | - | 4.95 | 135,821 |
| Andean Countries | 0 | - | 4.94 | 83,094 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,420 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,524 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,119 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,776 |
| Danube Countries | 0 | - | 4.97 | 71,218 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,944 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,669 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,773 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,687 |
| European Landlocked Countries | 0 | - | 4.99 | 145,917 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,438 |
| Countries with the Most Species | 0 | - | 4.99 | 95,317 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,581 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,249 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,422 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,036 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,686 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,049 |
| Countries in the Alps | 0 | - | 4.86 | 117,045 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,715 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,507 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,132 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,544 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,331 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,110 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,742 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,866 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,652 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,173 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,255 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,116 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,578 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,852 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,860 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,357 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,761 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,332 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,973 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,021 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,075 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,699 |
| Largest Countries By Category | 0 | - | 4.97 | 156,964 |
| Countries by Countries | 0 | - | 4.96 | 62,402 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,903 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,694 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,258 |
| Rivers of the United States | 0 | - | 4.93 | 65,656 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,551 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,466 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,581 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,517 |
| Island Countries | 0 | - | 4.99 | 708,129 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,848 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,217 |
| Northernmost Countries | 0 | - | 4.99 | 358,475 |
| Countries of South America | 0 | - | 5.00 | 917,082 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,229 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,814 |
| "Land" Countries | 0 | - | 4.98 | 333,996 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,355 |
| Landforms by Country | 0 | - | 4.52 | 51,926 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,942 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,299 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,194 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,784 |
| Countries with Megacities | 0 | - | 4.99 | 247,932 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,663 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,283 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,046 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,237 |
| Countries by Official Language | 0 | - | 4.95 | 193,054 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,536 |
| Countries in their Native Language | 0 | - | 4.99 | 196,904 |
| Independence from Whom | 0 | - | 4.99 | 210,034 |
| Subdivisions by Country | 0 | - | 4.86 | 50,121 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,989 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,066 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,985 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,498 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,894 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,826 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,094 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,270 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,343 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,275 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,775 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,824 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,484 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,590 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,570 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,763 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,105 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,983 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,509 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,696 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,452 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,190 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,193 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,067 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,270 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,463 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,042 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,499 |
| Widest Countries East to West | 0 | - | 4.92 | 128,989 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,276 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,421 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,633 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,827 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,773 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,185 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,060 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,632 |
| Countries with Double Letters | 0 | - | 4.97 | 93,631 |
| Countries that End in N | 0 | - | 4.94 | 157,093 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,955 |
| Countries with Six Letters | 0 | - | 4.93 | 210,620 |
| Countries with W | 0 | - | 4.97 | 158,388 |
| Countries with Z | 0 | - | 4.98 | 288,166 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,714 |
| Countries That End in U | 0 | - | 4.95 | 119,595 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,827 |
| Countries that End in O | 0 | - | 4.92 | 158,632 |
| Countries that End in R | 0 | - | 4.87 | 118,355 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,917 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,354 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,500 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,614 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,161 |
| Countries That End in Y | 0 | - | 4.90 | 185,272 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,566 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,859 |
| Countries that End in I | 0 | - | 4.94 | 134,521 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,408 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,279 |
| Countries That End in NIA | 0 | - | 4.92 | 109,095 |
| Countries That End in BIA | 0 | - | 4.92 | 147,829 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,215 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,609 |
| Countries That End in RIA | 0 | - | 4.93 | 126,180 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,144 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,622 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,641 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,997 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,518 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,008 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,255 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,765 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,653 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,876 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,956 |
| Countries that End in L | 0 | - | 4.94 | 156,137 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,926 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,017 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,605 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,420 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,502 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,841 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,575 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,357 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,605 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,964 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,883 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,794 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,229 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,452 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,400 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,806,236 |
| One Border Countries | 0 | - | 4.98 | 465,360 |
