| Countries With No Rivers | 0 | - | 4.96 | 76,697 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,754 |
| Countries with Fjords | 0 | - | 4.94 | 100,772 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,348 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,621 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,329 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,598 |
| Megadiverse Countries | 0 | - | 4.96 | 134,756 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,977 |
| North Sea Countries | 0 | - | 4.92 | 87,304 |
| Black Sea Countries | 0 | - | 4.87 | 60,573 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,311 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,409 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,177 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,492 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,731 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,380 |
| African Great Lakes | 0 | - | 4.82 | 66,038 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,240 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,814 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,847 |
| Biggest City by River | 0 | - | 4.41 | 52,824 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,324,609 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,346 |
| Landlocked Countries | 0 | - | 4.99 | 418,788 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,484 |
| Capitals by River | 0 | - | 4.55 | 48,290 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,936 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,894 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,106 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,941 |
| Himalayan Countries | 0 | - | 4.94 | 137,365 |
| Andean Countries | 0 | - | 4.95 | 83,906 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,202 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,610 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,814 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,332 |
| Danube Countries | 0 | - | 4.97 | 71,640 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,526 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,042 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,614 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,697 |
| European Landlocked Countries | 0 | - | 4.99 | 146,757 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,109 |
| Countries with the Most Species | 0 | - | 4.99 | 102,892 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,245 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,428 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,583 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,291 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,974 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,349 |
| Countries in the Alps | 0 | - | 4.87 | 117,660 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,115 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,333 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,400 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,965 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,073 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,442 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,260 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,172 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,956 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,539 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,468 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,333 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,908 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,179 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,198 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,146 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,053 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,562 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,502 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,297 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,191 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,987 |
| Largest Countries By Category | 0 | - | 4.97 | 157,614 |
| Countries by Countries | 0 | - | 4.96 | 62,824 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,308 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,043 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,677 |
| Rivers of the United States | 0 | - | 4.93 | 66,074 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,649 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,833 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,558 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,015 |
| Island Countries | 0 | - | 4.99 | 709,682 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,404 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,886 |
| Northernmost Countries | 0 | - | 4.99 | 360,395 |
| Countries of South America | 0 | - | 5.00 | 922,708 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,776 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,919 |
| "Land" Countries | 0 | - | 4.98 | 335,762 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,491 |
| Landforms by Country | 0 | - | 4.52 | 51,959 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,031 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,072 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,670 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,977 |
| Countries with Megacities | 0 | - | 4.99 | 258,792 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,850 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,964 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,133 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,969 |
| Countries by Official Language | 0 | - | 4.95 | 194,612 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,490 |
| Countries in their Native Language | 0 | - | 4.99 | 198,156 |
| Independence from Whom | 0 | - | 4.99 | 211,270 |
| Subdivisions by Country | 0 | - | 4.86 | 50,278 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,675 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,528 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,177 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,741 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,010 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,692 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,368 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,952 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,833 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,472 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,984 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,917 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,702 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,982 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,762 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,141 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,316 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,149 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,019 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,472 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,912 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,627 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,293 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,503 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,663 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,816 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,254 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,273 |
| Widest Countries East to West | 0 | - | 4.92 | 129,353 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,379 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,939 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,988 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,500 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,206 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,531 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,226 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,724 |
| Countries with Double Letters | 0 | - | 4.97 | 95,067 |
| Countries that End in N | 0 | - | 4.95 | 169,941 |
| Countries with Five Letters | 0 | - | 4.96 | 280,035 |
| Countries with Six Letters | 0 | - | 4.94 | 212,448 |
| Countries with W | 0 | - | 4.97 | 159,506 |
| Countries with Z | 0 | - | 4.98 | 289,774 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,714 |
| Countries That End in U | 0 | - | 4.95 | 120,402 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,730 |
| Countries that End in O | 0 | - | 4.92 | 159,187 |
| Countries that End in R | 0 | - | 4.87 | 118,727 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,504 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,307 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,089 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,070 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,655 |
| Countries That End in Y | 0 | - | 4.90 | 185,643 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,207 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,406 |
| Countries that End in I | 0 | - | 4.94 | 134,857 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,051 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,567 |
| Countries That End in NIA | 0 | - | 4.92 | 109,504 |
| Countries That End in BIA | 0 | - | 4.93 | 148,832 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,694 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,043 |
| Countries That End in RIA | 0 | - | 4.93 | 126,525 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,608 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,651 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,202 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,557 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,093 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,312 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,671 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,219 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,109 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,187 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,523 |
| Countries that End in L | 0 | - | 4.94 | 156,534 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,944 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,152 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,828 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,712 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,760 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,752 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,145 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,600 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,109 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,591 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,574 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,943 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,592 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,651 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,822,125 |
| One Border Countries | 0 | - | 4.98 | 467,604 |
