| Countries With No Rivers | 0 | - | 4.96 | 76,939 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,913 |
| Countries with Fjords | 0 | - | 4.94 | 101,070 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,671 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,826 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,479 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,742 |
| Megadiverse Countries | 0 | - | 4.96 | 135,056 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,087 |
| North Sea Countries | 0 | - | 4.92 | 87,509 |
| Black Sea Countries | 0 | - | 4.87 | 60,663 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,462 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,562 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,288 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,006 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 29,087 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,448 |
| African Great Lakes | 0 | - | 4.82 | 66,545 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,998 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,313 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,324 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,618,214 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,661 |
| Landlocked Countries | 0 | - | 4.99 | 422,428 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,545 |
| Capitals by River | 0 | - | 4.55 | 48,347 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,782,028 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,407 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,250 |
| Biggest City by River | 0 | - | 4.38 | 52,892 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,744 |
| Himalayan Countries | 0 | - | 4.95 | 138,942 |
| Andean Countries | 0 | - | 4.93 | 84,746 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,950 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,018 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,556 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,895 |
| Danube Countries | 0 | - | 4.97 | 72,075 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,094 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,476 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,413 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,895 |
| European Landlocked Countries | 0 | - | 4.99 | 147,203 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,735 |
| Countries with the Most Species | 0 | - | 4.99 | 103,283 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,852 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,624 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,741 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,579 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,276 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,716 |
| Countries in the Alps | 0 | - | 4.87 | 118,282 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,405 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,134 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,699 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,640 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,568 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,988 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,730 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,551 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,204 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,907 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,681 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,555 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,266 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,523 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,579 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,010 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,353 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,316 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,152 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,169 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,261 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,270 |
| Largest Countries By Category | 0 | - | 4.97 | 158,299 |
| Countries by Countries | 0 | - | 4.96 | 63,295 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,721 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,684 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,285 |
| Rivers of the United States | 0 | - | 4.93 | 66,372 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,798 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,932 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,633 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,622 |
| Island Countries | 0 | - | 4.99 | 711,195 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,787 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,416 |
| Northernmost Countries | 0 | - | 4.99 | 362,174 |
| Countries of South America | 0 | - | 5.00 | 927,990 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,733 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,713 |
| "Land" Countries | 0 | - | 4.98 | 337,464 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,624 |
| Landforms by Country | 0 | - | 4.52 | 51,989 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,121 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,901 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,141 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,016 |
| Countries with Megacities | 0 | - | 4.99 | 264,862 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,850 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,536 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,109 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,613 |
| Countries by Official Language | 0 | - | 4.95 | 195,336 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,501 |
| Countries in their Native Language | 0 | - | 4.99 | 199,129 |
| Independence from Whom | 0 | - | 4.99 | 212,208 |
| Subdivisions by Country | 0 | - | 4.87 | 50,448 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,805 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,180 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,384 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,261 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,123 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,187 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,622 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,533 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,061 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,682 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,161 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,764 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,915 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,230 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,989 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,375 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,514 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,315 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,392 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,174 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,329 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,037 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,329 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,936 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,053 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,331 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,469 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,604 |
| Widest Countries East to West | 0 | - | 4.92 | 129,695 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,468 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,432 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,139 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,797 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,627 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,914 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,389 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,811 |
| Countries with Double Letters | 0 | - | 4.96 | 96,318 |
| Countries that End in N | 0 | - | 4.95 | 171,218 |
| Countries with Five Letters | 0 | - | 4.96 | 282,662 |
| Countries with Six Letters | 0 | - | 4.94 | 213,656 |
| Countries with W | 0 | - | 4.97 | 160,394 |
| Countries with Z | 0 | - | 4.98 | 291,566 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,763 |
| Countries That End in U | 0 | - | 4.95 | 120,881 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,530 |
| Countries that End in O | 0 | - | 4.92 | 159,538 |
| Countries that End in R | 0 | - | 4.87 | 118,982 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,752 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,173 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,735 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,502 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,425 |
| Countries That End in Y | 0 | - | 4.91 | 185,897 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,984 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,905 |
| Countries that End in I | 0 | - | 4.94 | 135,120 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,157 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,843 |
| Countries That End in NIA | 0 | - | 4.92 | 109,811 |
| Countries That End in BIA | 0 | - | 4.93 | 149,242 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,150 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,455 |
| Countries That End in RIA | 0 | - | 4.93 | 126,832 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,045 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,722 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,758 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,183 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,738 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,598 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,062 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,457 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,558 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,449 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,027 |
| Countries that End in L | 0 | - | 4.94 | 156,867 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,951 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,279 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,050 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,978 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,026 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,821 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,710 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,169 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,888 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,516 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,900 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,120 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,718 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,898 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,836,486 |
| One Border Countries | 0 | - | 4.98 | 470,109 |
