| Countries With No Rivers | 0 | - | 4.96 | 76,222 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,546 |
| Countries with Fjords | 0 | - | 4.93 | 100,476 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,023 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,420 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,197 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,886 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,454 |
| Megadiverse Countries | 0 | - | 4.96 | 134,545 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,844 |
| North Sea Countries | 0 | - | 4.92 | 86,793 |
| Black Sea Countries | 0 | - | 4.87 | 60,443 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,152 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,250 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,048 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,166 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,604,493 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,498 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,902 |
| African Great Lakes | 0 | - | 4.82 | 65,705 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,140 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,035 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,653 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,701 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,168,022 |
| Landlocked Countries | 0 | - | 4.99 | 416,713 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,392 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,740,954 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,752 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,962 |
| Himalayan Countries | 0 | - | 4.95 | 136,525 |
| Andean Countries | 0 | - | 4.95 | 83,503 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,764 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,020 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,433 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,032 |
| Danube Countries | 0 | - | 4.97 | 71,437 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,221 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,852 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,168 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,144 |
| European Landlocked Countries | 0 | - | 4.99 | 146,136 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,773 |
| Countries with the Most Species | 0 | - | 4.99 | 101,713 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,906 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,333 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,511 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,162 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,811 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,194 |
| Countries in the Alps | 0 | - | 4.86 | 117,338 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,911 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,912 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,255 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,746 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,831 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,256 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,995 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,996 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,809 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,332 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,369 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,205 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,730 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,002 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,010 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,725 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,897 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,433 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,253 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,041 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,577 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,832 |
| Largest Countries By Category | 0 | - | 4.97 | 157,265 |
| Countries by Countries | 0 | - | 4.96 | 62,594 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,881 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,082 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,087 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,855 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,468 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,173 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,885 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,595 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,900 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,843 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,824 |
| Island Countries | 0 | - | 4.99 | 708,835 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,591 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,419 |
| Northernmost Countries | 0 | - | 4.99 | 359,405 |
| Countries of South America | 0 | - | 5.00 | 919,758 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,790 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,938 |
| "Land" Countries | 0 | - | 4.98 | 334,623 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 380,615 |
| Biggest City by River | 0 | - | 4.41 | 52,753 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,414 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,108 |
| Empty World Map without 20 Random Countries | 0 | - | 4.93 | 136,406 |
| Landforms by Country | 0 | - | 4.52 | 51,939 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,988 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,779 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,026 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,869 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,300 |
| Countries with Megacities | 0 | - | 4.99 | 248,981 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,149 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,555 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,500 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,515 |
| Capitals by River | 0 | - | 4.55 | 48,270 |
| Countries by Official Language | 0 | - | 4.95 | 194,020 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,594 |
| Countries in their Native Language | 0 | - | 4.99 | 197,639 |
| Independence from Whom | 0 | - | 4.99 | 210,819 |
| Subdivisions by Country | 0 | - | 4.86 | 50,202 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,338 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,842 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,077 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,633 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,948 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,451 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,222 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,602 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,551 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,373 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,807 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,192 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,581 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,688 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,646 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,861 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,204 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,583 |
| World Map Quiz | 0 | - | 4.81 | 64,101 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,399 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,704 |
| Countries by Founding Story | 0 | - | 4.95 | 76,879 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,068 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,673 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,401 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,722 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,271 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,469 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,632 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,151 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,640 |
| Widest Countries East to West | 0 | - | 4.92 | 129,140 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,329 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,661 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,923 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,960 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,984 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,361 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,103 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,678 |
| Countries with Double Letters | 0 | - | 4.96 | 94,148 |
| Countries that End in N | 0 | - | 4.95 | 165,972 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,595 |
| Countries with Six Letters | 0 | - | 4.93 | 211,148 |
| Countries with W | 0 | - | 4.97 | 158,819 |
| Countries with Z | 0 | - | 4.98 | 288,782 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,041 |
| Countries That End in U | 0 | - | 4.95 | 119,923 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,165 |
| Countries that End in O | 0 | - | 4.92 | 158,867 |
| Countries that End in R | 0 | - | 4.87 | 118,510 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,290 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,758 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,743 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,814 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,381 |
| Countries That End in Y | 0 | - | 4.90 | 185,426 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,836 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,090 |
| Countries that End in I | 0 | - | 4.94 | 134,668 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,697 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,414 |
| Countries That End in NIA | 0 | - | 4.92 | 109,295 |
| Countries That End in BIA | 0 | - | 4.93 | 148,565 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,428 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,773 |
| Countries That End in RIA | 0 | - | 4.93 | 126,347 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,333 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,089 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,872 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,206 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,787 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,143 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,438 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,943 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,841 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,000 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,525 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,206 |
| Countries that End in L | 0 | - | 4.94 | 156,290 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,899 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,069 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,713 |
