| North Sea Countries | 0 | - | 4.92 | 86,616 |
| Black Sea Countries | 0 | - | 4.87 | 60,347 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,023 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,123 |
| Countries With No Rivers | 0 | - | 4.96 | 76,048 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,962 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,263 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,385 |
| Countries with Fjords | 0 | - | 4.93 | 100,230 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 114,799 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,736 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,250 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,305 |
| Megadiverse Countries | 0 | - | 4.97 | 133,925 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,223 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,631 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,329 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,434 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,941,995 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,087 |
| Landlocked Countries | 0 | - | 4.99 | 413,856 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,338 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,220 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,431 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,690 |
| Himalayan Countries | 0 | - | 4.95 | 135,452 |
| Andean Countries | 0 | - | 4.94 | 82,862 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,257 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,263 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,947 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,637 |
| Danube Countries | 0 | - | 4.97 | 71,100 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,793 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,559 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,531 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,454 |
| European Landlocked Countries | 0 | - | 4.99 | 145,781 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,245 |
| Countries with the Most Species | 0 | - | 4.99 | 95,255 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,390 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,205 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,376 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,971 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,592 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,967 |
| Countries in the Alps | 0 | - | 4.86 | 116,865 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,588 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,295 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,027 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,443 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,201 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,026 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,603 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,779 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,405 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,087 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,202 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,055 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,466 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,775 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,771 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,125 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,669 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,270 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,802 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,440 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,752 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,617 |
| Largest Countries By Category | 0 | - | 4.97 | 156,801 |
| Countries by Countries | 0 | - | 4.96 | 62,280 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,792 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,516 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,055 |
| Seas on the World Map | 0 | - | 4.96 | 133,866 |
| Seas of the World | 0 | - | 5.00 | 154,449 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,480 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,391 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,192 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,992 |
| Island Countries | 0 | - | 4.99 | 707,721 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,039 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,820 |
| Northernmost Countries | 0 | - | 4.99 | 357,876 |
| Countries of South America | 0 | - | 5.00 | 915,271 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,090 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,398 |
| "Land" Countries | 0 | - | 4.98 | 333,717 |
| Biggest City by River | 0 | - | 4.41 | 52,702 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,326 |
| Landforms by Country | 0 | - | 4.52 | 51,919 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,914 |
| African Great Lakes | 0 | - | 4.82 | 65,224 |
| Seas of Europe | 0 | - | 4.37 | 83,829 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,564 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,778 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,438 |
| Countries with Megacities | 0 | - | 4.99 | 247,251 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,283 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,089 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,708 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,010 |
| Countries by Official Language | 0 | - | 4.95 | 192,821 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,188 |
| Countries in their Native Language | 0 | - | 4.99 | 196,687 |
| Independence from Whom | 0 | - | 4.99 | 209,769 |
| Subdivisions by Country | 0 | - | 4.86 | 50,080 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,814 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,848 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,930 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,438 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,867 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,700 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,022 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,090 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,170 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,227 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,641 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,438 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,509 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,514 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,701 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,034 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,656 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,357 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,409 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,024 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,975 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,845 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,889 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,090 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,301 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,959 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,352 |
| Widest Countries East to West | 0 | - | 4.92 | 128,627 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,219 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,258 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,585 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,707 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,662 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,077 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,055 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,592 |
| Countries with Double Letters | 0 | - | 4.97 | 93,435 |
| Countries that End in N | 0 | - | 4.94 | 156,933 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,738 |
| Countries with Six Letters | 0 | - | 4.93 | 210,409 |
| Countries with W | 0 | - | 4.97 | 158,263 |
| Countries with Z | 0 | - | 4.98 | 287,934 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,588 |
| Countries That End in U | 0 | - | 4.95 | 119,536 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,624 |
| Countries that End in O | 0 | - | 4.92 | 158,573 |
| Countries that End in R | 0 | - | 4.87 | 118,288 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,869 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,116 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,367 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,520 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,057 |
| Countries That End in Y | 0 | - | 4.90 | 185,222 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,419 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,719 |
| Countries that End in I | 0 | - | 4.94 | 134,436 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,251 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,216 |
| Countries That End in NIA | 0 | - | 4.92 | 109,024 |
| Countries That End in BIA | 0 | - | 4.92 | 147,734 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,100 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,509 |
| Countries That End in RIA | 0 | - | 4.93 | 126,105 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,033 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,241 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,546 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,908 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,389 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,948 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,146 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,676 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,540 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,824 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,850 |
| Countries that End in L | 0 | - | 4.94 | 155,766 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,383 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,995 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,534 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,322 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,447 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,162 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,147 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,938 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,233 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,439 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,552 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,634 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,175 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,426 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,344 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,802,194 |
| One Border Countries | 0 | - | 4.98 | 464,606 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,276 |
