| Countries With No Rivers | 0 | - | 4.96 | 76,956 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,923 |
| Countries with Fjords | 0 | - | 4.94 | 101,086 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,697 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,843 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,487 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,755 |
| Megadiverse Countries | 0 | - | 4.96 | 135,076 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,092 |
| North Sea Countries | 0 | - | 4.92 | 87,522 |
| Black Sea Countries | 0 | - | 4.87 | 60,669 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,473 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,570 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,302 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,036 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,111 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,506 |
| African Great Lakes | 0 | - | 4.82 | 66,595 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,017 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,330 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,341 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,641,526 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,683 |
| Landlocked Countries | 0 | - | 4.99 | 422,718 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,555 |
| Capitals by River | 0 | - | 4.55 | 48,353 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,783,993 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,419 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,262 |
| Biggest City by River | 0 | - | 4.38 | 52,907 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,891 |
| Himalayan Countries | 0 | - | 4.95 | 139,062 |
| Andean Countries | 0 | - | 4.93 | 84,820 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,047 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,133 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,625 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,944 |
| Danube Countries | 0 | - | 4.97 | 72,109 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,141 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,512 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,475 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,965 |
| European Landlocked Countries | 0 | - | 4.99 | 147,243 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,784 |
| Countries with the Most Species | 0 | - | 4.99 | 103,319 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,910 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,635 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,757 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,603 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,329 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,751 |
| Countries in the Alps | 0 | - | 4.87 | 118,323 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,596 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,211 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,727 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,685 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,596 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,008 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,765 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,576 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,230 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,934 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,696 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,577 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,306 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,546 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,612 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,076 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,376 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,557 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,219 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,346 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,358 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,294 |
| Largest Countries By Category | 0 | - | 4.97 | 158,357 |
| Countries by Countries | 0 | - | 4.96 | 63,327 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,757 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,705 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,308 |
| Rivers of the United States | 0 | - | 4.93 | 66,392 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,806 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,282 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,731 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,787 |
| Island Countries | 0 | - | 4.99 | 711,306 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,533 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,816 |
| Northernmost Countries | 0 | - | 4.99 | 362,324 |
| Countries of South America | 0 | - | 5.00 | 928,415 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,248 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,581 |
| "Land" Countries | 0 | - | 4.98 | 337,555 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,633 |
| Landforms by Country | 0 | - | 4.52 | 51,991 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,131 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,397 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,267 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,118 |
| Countries with Megacities | 0 | - | 4.99 | 265,094 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,931 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,601 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,201 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,670 |
| Countries by Official Language | 0 | - | 4.95 | 195,404 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,582 |
| Countries in their Native Language | 0 | - | 4.99 | 199,185 |
| Independence from Whom | 0 | - | 4.99 | 212,279 |
| Subdivisions by Country | 0 | - | 4.87 | 50,465 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,862 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,216 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,395 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,274 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,132 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,224 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,643 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,574 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,309 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,695 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,172 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,845 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,931 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,249 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,005 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,397 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,532 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,430 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,419 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,241 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,362 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,077 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,458 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,974 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,083 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,364 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,484 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,625 |
| Widest Countries East to West | 0 | - | 4.92 | 129,720 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,474 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,467 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,150 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,818 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,663 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,943 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,398 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,815 |
| Countries with Double Letters | 0 | - | 4.96 | 96,405 |
| Countries that End in N | 0 | - | 4.95 | 171,289 |
| Countries with Five Letters | 0 | - | 4.96 | 282,787 |
| Countries with Six Letters | 0 | - | 4.94 | 213,730 |
| Countries with W | 0 | - | 4.97 | 160,451 |
| Countries with Z | 0 | - | 4.98 | 291,642 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,816 |
| Countries That End in U | 0 | - | 4.95 | 120,906 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,581 |
| Countries that End in O | 0 | - | 4.92 | 159,565 |
| Countries that End in R | 0 | - | 4.87 | 119,005 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,767 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,253 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,773 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,540 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,459 |
| Countries That End in Y | 0 | - | 4.91 | 185,924 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,018 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,937 |
| Countries that End in I | 0 | - | 4.94 | 135,140 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,199 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,863 |
| Countries That End in NIA | 0 | - | 4.92 | 109,839 |
| Countries That End in BIA | 0 | - | 4.93 | 149,275 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,184 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,486 |
| Countries That End in RIA | 0 | - | 4.93 | 126,859 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,077 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,809 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,801 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,236 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,782 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,624 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,085 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,462 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,595 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,470 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,060 |
| Countries that End in L | 0 | - | 4.94 | 156,898 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,121 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,286 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,077 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,999 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,045 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,897 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,763 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,206 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,911 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,569 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,936 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,129 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,725 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,912 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,837,604 |
| One Border Countries | 0 | - | 4.98 | 470,277 |
