| North Sea Countries | 0 | - | 4.92 | 87,341 |
| Black Sea Countries | 0 | - | 4.87 | 60,585 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,337 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,435 |
| Countries With No Rivers | 0 | - | 4.96 | 76,734 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,049 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,202 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,775 |
| Countries with Fjords | 0 | - | 4.94 | 100,816 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,593 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,401 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,645 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,623 |
| Megadiverse Countries | 0 | - | 4.96 | 134,805 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,782 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,546 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,718 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,092 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,119 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,376,437 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,355 |
| Landlocked Countries | 0 | - | 4.99 | 419,499 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,495 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,760,390 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,156 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,222 |
| Himalayan Countries | 0 | - | 4.95 | 137,664 |
| Andean Countries | 0 | - | 4.95 | 84,060 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,305 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,809 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,925 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,420 |
| Danube Countries | 0 | - | 4.97 | 71,724 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,638 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,114 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,750 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,824 |
| European Landlocked Countries | 0 | - | 4.99 | 146,838 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,207 |
| Countries with the Most Species | 0 | - | 4.99 | 102,983 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,363 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,448 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,610 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,348 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,023 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,417 |
| Countries in the Alps | 0 | - | 4.87 | 117,777 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,196 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,479 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,453 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,088 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,165 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,759 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,353 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,242 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,005 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,604 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,514 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,363 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,971 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,238 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,258 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,294 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,098 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,601 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,629 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,628 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,366 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,030 |
| Largest Countries By Category | 0 | - | 4.97 | 157,747 |
| Countries by Countries | 0 | - | 4.96 | 62,897 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,385 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,408 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,959 |
| Seas on the World Map | 0 | - | 4.96 | 135,218 |
| Seas of the World | 0 | - | 5.00 | 156,567 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,735 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,481 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,757 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,437 |
| Island Countries | 0 | - | 4.99 | 709,999 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,014 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,678 |
| Northernmost Countries | 0 | - | 4.99 | 360,743 |
| Countries of South America | 0 | - | 5.00 | 923,730 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,176 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,376 |
| "Land" Countries | 0 | - | 4.98 | 335,935 |
| Biggest City by River | 0 | - | 4.41 | 52,832 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,515 |
| Landforms by Country | 0 | - | 4.52 | 51,965 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,053 |
| African Great Lakes | 0 | - | 4.82 | 66,116 |
| Seas of Europe | 0 | - | 4.37 | 84,609 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,131 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,924 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,183 |
| Countries with Megacities | 0 | - | 4.99 | 261,945 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,042 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,084 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,337 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,118 |
| Countries by Official Language | 0 | - | 4.95 | 194,751 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,681 |
| Countries in their Native Language | 0 | - | 4.99 | 198,288 |
| Independence from Whom | 0 | - | 4.99 | 211,462 |
| Subdivisions by Country | 0 | - | 4.86 | 50,310 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,811 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,624 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,209 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,781 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,031 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,769 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,417 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,057 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,878 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,517 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,009 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,117 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,746 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,023 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,808 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,183 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,357 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,351 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,086 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,629 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,000 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,719 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,499 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,596 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,739 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,880 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,302 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,336 |
| Widest Countries East to West | 0 | - | 4.92 | 129,422 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,400 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,017 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,016 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,561 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,286 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,608 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,261 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,736 |
| Countries with Double Letters | 0 | - | 4.97 | 95,177 |
| Countries that End in N | 0 | - | 4.95 | 170,175 |
| Countries with Five Letters | 0 | - | 4.96 | 280,804 |
| Countries with Six Letters | 0 | - | 4.94 | 212,612 |
| Countries with W | 0 | - | 4.97 | 159,582 |
| Countries with Z | 0 | - | 4.98 | 289,973 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,819 |
| Countries That End in U | 0 | - | 4.95 | 120,442 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,831 |
| Countries that End in O | 0 | - | 4.92 | 159,230 |
| Countries that End in R | 0 | - | 4.87 | 118,757 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,535 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,433 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,179 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,132 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,726 |
| Countries That End in Y | 0 | - | 4.91 | 185,669 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,330 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,492 |
| Countries that End in I | 0 | - | 4.94 | 134,902 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,201 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,606 |
| Countries That End in NIA | 0 | - | 4.92 | 109,546 |
| Countries That End in BIA | 0 | - | 4.93 | 148,894 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,782 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,113 |
| Countries That End in RIA | 0 | - | 4.93 | 126,569 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,699 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,857 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,302 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,685 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,209 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,363 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,725 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,291 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,190 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,230 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,606 |
| Countries that End in L | 0 | - | 4.94 | 156,578 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,280 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,163 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,868 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,754 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,807 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,886 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,255 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,692 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,196 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,691 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,625 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,975 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,612 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,701 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,824,767 |
| One Border Countries | 0 | - | 4.98 | 467,991 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,617,937 |
