| Countries With No Rivers | 0 | - | 4.96 | 76,565 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,711 |
| Countries with Fjords | 0 | - | 4.93 | 100,673 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,235 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,553 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,283 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,541 |
| Megadiverse Countries | 0 | - | 4.96 | 134,679 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,941 |
| North Sea Countries | 0 | - | 4.92 | 86,980 |
| Black Sea Countries | 0 | - | 4.87 | 60,536 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,251 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,351 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,127 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,635 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,184 |
| African Great Lakes | 0 | - | 4.82 | 65,856 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,134 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,732 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,786 |
| Biggest City by River | 0 | - | 4.41 | 52,798 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,244,956 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,237 |
| Landlocked Countries | 0 | - | 4.99 | 417,674 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,454 |
| Capitals by River | 0 | - | 4.55 | 48,283 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,748,632 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,822 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,044 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,384 |
| Himalayan Countries | 0 | - | 4.94 | 136,903 |
| Andean Countries | 0 | - | 4.95 | 83,671 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,933 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,262 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,596 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,182 |
| Danube Countries | 0 | - | 4.97 | 71,526 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,363 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,942 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,399 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,461 |
| European Landlocked Countries | 0 | - | 4.99 | 146,325 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,955 |
| Countries with the Most Species | 0 | - | 4.99 | 102,618 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,078 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,376 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,550 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,227 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,885 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,268 |
| Countries in the Alps | 0 | - | 4.86 | 117,494 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,004 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,123 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,334 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,851 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,951 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,366 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,124 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,081 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,884 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,430 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,419 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,270 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,826 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,097 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,108 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,937 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,973 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,501 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,364 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,677 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,884 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,908 |
| Largest Countries By Category | 0 | - | 4.97 | 157,442 |
| Countries by Countries | 0 | - | 4.96 | 62,718 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,199 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,932 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,572 |
| Rivers of the United States | 0 | - | 4.93 | 65,975 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,625 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,914 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,266 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,461 |
| Island Countries | 0 | - | 4.99 | 709,258 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,957 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,697 |
| Northernmost Countries | 0 | - | 4.99 | 359,928 |
| Countries of South America | 0 | - | 5.00 | 921,264 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,973 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,862,456 |
| "Land" Countries | 0 | - | 4.98 | 335,438 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,455 |
| Landforms by Country | 0 | - | 4.52 | 51,950 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,010 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,553 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,288 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,625 |
| Countries with Megacities | 0 | - | 4.99 | 249,660 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,462 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,751 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,799 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,720 |
| Countries by Official Language | 0 | - | 4.95 | 194,405 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,228 |
| Countries in their Native Language | 0 | - | 4.99 | 197,968 |
| Independence from Whom | 0 | - | 4.99 | 211,066 |
| Subdivisions by Country | 0 | - | 4.86 | 50,240 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,514 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,101 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,136 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,692 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,980 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,564 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,299 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,781 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,702 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,432 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,848 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,585 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,646 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,767 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,711 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,946 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,271 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,856 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,886 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,268 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,798 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,521 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,009 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,394 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,578 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,733 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,202 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,191 |
| Widest Countries East to West | 0 | - | 4.92 | 129,252 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,354 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,792 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,964 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,425 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,087 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,445 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,178 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,704 |
| Countries with Double Letters | 0 | - | 4.97 | 94,786 |
| Countries that End in N | 0 | - | 4.95 | 169,256 |
| Countries with Five Letters | 0 | - | 4.96 | 276,938 |
| Countries with Six Letters | 0 | - | 4.94 | 212,132 |
| Countries with W | 0 | - | 4.97 | 159,300 |
| Countries with Z | 0 | - | 4.98 | 289,482 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,496 |
| Countries That End in U | 0 | - | 4.95 | 120,288 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,525 |
| Countries that End in O | 0 | - | 4.92 | 159,104 |
| Countries that End in R | 0 | - | 4.87 | 118,653 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,434 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,094 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,952 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,971 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,558 |
| Countries That End in Y | 0 | - | 4.90 | 185,576 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,054 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,270 |
| Countries that End in I | 0 | - | 4.94 | 134,782 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,887 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,503 |
| Countries That End in NIA | 0 | - | 4.92 | 109,423 |
| Countries That End in BIA | 0 | - | 4.93 | 148,719 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,572 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,934 |
| Countries That End in RIA | 0 | - | 4.93 | 126,437 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,520 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,379 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,042 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,388 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,983 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,248 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,577 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,111 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,003 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,126 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,375 |
| Countries that End in L | 0 | - | 4.94 | 156,449 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,508 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,128 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,777 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,639 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,697 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,515 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,955 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,486 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,934 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,410 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,199 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,901 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,324 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,560 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,580 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,817,892 |
| One Border Countries | 0 | - | 4.98 | 467,046 |
