| Countries With No Rivers | 0 | - | 4.96 | 77,059 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,989 |
| Countries with Fjords | 0 | - | 4.94 | 101,213 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,841 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,923 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,556 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,814 |
| Megadiverse Countries | 0 | - | 4.96 | 135,173 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,133 |
| North Sea Countries | 0 | - | 4.92 | 87,623 |
| Black Sea Countries | 0 | - | 4.87 | 60,707 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,525 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,625 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,339 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,233 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,250 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,833 |
| African Great Lakes | 0 | - | 4.82 | 66,803 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,141 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,433 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 87,448 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,759,672 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,795 |
| Landlocked Countries | 0 | - | 4.99 | 424,187 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,593 |
| Capitals by River | 0 | - | 4.55 | 48,369 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,794,415 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,538 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,333 |
| Biggest City by River | 0 | - | 4.38 | 52,933 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,493 |
| Himalayan Countries | 0 | - | 4.94 | 139,656 |
| Andean Countries | 0 | - | 4.94 | 85,124 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,311 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,551 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,878 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,166 |
| Danube Countries | 0 | - | 4.97 | 72,246 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,376 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,673 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,792 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,277 |
| European Landlocked Countries | 0 | - | 4.99 | 147,422 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,033 |
| Countries with the Most Species | 0 | - | 4.99 | 103,451 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,168 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,696 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,807 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,723 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,451 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,873 |
| Countries in the Alps | 0 | - | 4.87 | 118,529 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,200 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,529 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,837 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,845 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,774 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,115 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,961 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,702 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,325 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,039 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,778 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,643 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,417 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,661 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,746 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,440 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,494 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,427 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,445 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,081 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,759 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,407 |
| Largest Countries By Category | 0 | - | 4.97 | 158,597 |
| Countries by Countries | 0 | - | 4.96 | 63,472 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,950 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,005 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,454 |
| Rivers of the United States | 0 | - | 4.93 | 66,546 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,838 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,690 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,215 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,749 |
| Island Countries | 0 | - | 4.99 | 711,938 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,940 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,925 |
| Northernmost Countries | 0 | - | 4.99 | 363,271 |
| Countries of South America | 0 | - | 5.00 | 930,472 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,861 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,530 |
| "Land" Countries | 0 | - | 4.98 | 337,989 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,678 |
| Landforms by Country | 0 | - | 4.52 | 52,007 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,168 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,819 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,889 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,656 |
| Countries with Megacities | 0 | - | 4.99 | 266,158 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,392 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,832 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,679 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,954 |
| Countries by Official Language | 0 | - | 4.95 | 195,725 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,227 |
| Countries in their Native Language | 0 | - | 4.99 | 199,494 |
| Independence from Whom | 0 | - | 4.99 | 212,681 |
| Subdivisions by Country | 0 | - | 4.87 | 50,549 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,164 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,660 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,469 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,367 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,172 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,411 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,730 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,847 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,488 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,764 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,216 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,141 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,287 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,356 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,077 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,496 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,614 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,939 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,553 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,924 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,867 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,400 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,140 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,253 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,380 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,575 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,607 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,798 |
| Widest Countries East to West | 0 | - | 4.92 | 130,276 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,550 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,069 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,452 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,960 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,835 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,330 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,458 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,859 |
| Countries with Double Letters | 0 | - | 4.96 | 96,755 |
| Countries that End in N | 0 | - | 4.95 | 171,642 |
| Countries with Five Letters | 0 | - | 4.96 | 283,329 |
| Countries with Six Letters | 0 | - | 4.94 | 214,099 |
| Countries with W | 0 | - | 4.96 | 160,709 |
| Countries with Z | 0 | - | 4.98 | 292,063 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,061 |
| Countries That End in U | 0 | - | 4.95 | 121,058 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,863 |
| Countries that End in O | 0 | - | 4.92 | 159,705 |
| Countries that End in R | 0 | - | 4.87 | 119,098 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,847 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,540 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,976 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,690 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,611 |
| Countries That End in Y | 0 | - | 4.91 | 186,014 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,244 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,115 |
| Countries that End in I | 0 | - | 4.94 | 135,238 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,429 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,958 |
| Countries That End in NIA | 0 | - | 4.92 | 109,945 |
| Countries That End in BIA | 0 | - | 4.93 | 149,429 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,369 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,648 |
| Countries That End in RIA | 0 | - | 4.93 | 126,963 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,249 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,190 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,994 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,431 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,981 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,720 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,220 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,503 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,751 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,567 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,252 |
| Countries that End in L | 0 | - | 4.94 | 157,013 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,878 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,313 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,174 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,109 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,150 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,169 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,969 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,325 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,094 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,787 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,091 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,185 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,769 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,147 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,843,281 |
| One Border Countries | 0 | - | 4.98 | 471,170 |
