| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,852,816 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,136 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,161 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,047 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,423 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,961,753 |
| Landlocked Countries | 0 | - | 4.99 | 427,158 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 591,648 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,811,746 |
| Countries and Capitals of the World With a Map | 0 | - | 5.00 | 69,376 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,876 |
| Himalayan Countries | 0 | - | 4.93 | 140,787 |
| Andean Countries | 0 | - | 4.94 | 85,776 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,903 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,467 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,453 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,676 |
| Danube Countries | 0 | - | 4.97 | 72,533 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,788 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,969 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,423 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,895 |
| European Landlocked Countries | 0 | - | 4.99 | 147,730 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,522 |
| Countries with the Most Species | 0 | - | 4.99 | 103,640 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,627 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,812 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,950 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,917 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,670 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,121 |
| Countries in the Alps | 0 | - | 4.87 | 118,955 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,965 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,108 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,050 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,161 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,117 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,382 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,578 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,983 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,507 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,306 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,949 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,825 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,664 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,914 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,014 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,130 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,724 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,384 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,829 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,256 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,471 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,607 |
| Largest Countries By Category | 0 | - | 4.97 | 159,073 |
| Countries by Countries | 0 | - | 4.97 | 63,795 |
| Pixelated World Map | 0 | - | 5.00 | 144,253 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,421 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,443 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,704 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,737 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,851 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,972 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,389 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,544 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 54,311 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,218 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,905 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,525 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,022 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,304 |
| Island Countries | 0 | - | 4.99 | 712,975 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,054 |
| Northernmost Countries | 0 | - | 4.99 | 364,557 |
| Countries of South America | 0 | - | 5.00 | 934,129 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,340 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,719 |
| "Land" Countries | 0 | - | 4.98 | 338,959 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,802 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,604 |
| Random Point on Land to Country | 0 | - | 4.99 | 237,616 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,283 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,472 |
| Countries with Megacities | 0 | - | 4.99 | 267,791 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,122 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,326 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,455 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,422 |
| Countries by Official Language | 0 | - | 4.95 | 196,197 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,919 |
| Countries in their Native Language | 0 | - | 4.99 | 199,944 |
| Independence from Whom | 0 | - | 4.99 | 213,384 |
| Subdivisions by Country | 0 | - | 4.87 | 50,663 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,641 |
| Megadiverse Countries | 0 | - | 4.96 | 148,828 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,124 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,573 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,800 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,257 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,452 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,921 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,269 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,620 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,159 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,284 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,746 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,481 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,502 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,216 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,634 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,960 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,705 |
| World Map Quiz | 0 | - | 4.81 | 65,916 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,845 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,802 |
| Countries of the World With a Disappearing Map | 0 | - | 5.00 | 114,223 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,714 |
| Countries by Sports in 60 Seconds | 0 | - | 4.92 | 148,552 |
| Countries by Founding Story | 0 | - | 4.95 | 77,902 |
| Countries by Road Signs | 0 | - | 4.98 | 54,439 |
| Countries That Do Not Border | 0 | - | 4.99 | 60,970 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,496 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,221 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,694 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,902 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,540 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,654 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,844 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,761 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,930 |
| Widest Countries East to West | 0 | - | 4.92 | 130,839 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,627 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,388 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,557 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,151 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,099 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,603 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,532 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,921 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,251 |
| Countries with Double Letters | 0 | - | 4.96 | 97,598 |
| Countries that End in N | 0 | - | 4.95 | 172,606 |
| Countries with Five Letters | 0 | - | 4.96 | 284,607 |
| Countries with Six Letters | 0 | - | 4.94 | 214,934 |
| Countries with W | 0 | - | 4.96 | 161,293 |
| Countries with Z | 0 | - | 4.98 | 292,970 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,653 |
| Countries That End in U | 0 | - | 4.95 | 121,378 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,407 |
| Countries that End in O | 0 | - | 4.92 | 160,366 |
| Countries that End in R | 0 | - | 4.87 | 119,273 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,055 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,130 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,258 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,170 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,702 |
| Countries That End in Y | 0 | - | 4.91 | 186,169 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,211 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,407 |
| Countries that End in I | 0 | - | 4.94 | 135,418 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,222 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,139 |
| Countries That End in NIA | 0 | - | 4.92 | 110,154 |
| Countries That End in BIA | 0 | - | 4.93 | 149,730 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,922 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,892 |
| Countries That End in RIA | 0 | - | 4.93 | 127,141 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,536 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,916 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,379 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,838 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,392 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,918 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,447 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,603 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,044 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,729 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,899 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,600 |
| Countries with the Highest Scrabble Score | 0 | - | 4.97 | 64,022 |
| Countries that End in L | 0 | - | 4.94 | 157,239 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,553 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,377 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,879 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,152 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,536 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,644 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,295 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,518 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,404 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,183 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,316 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,293 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,968 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,872 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,354 |
| Smallest Countries with at Least Two Borders | 0 | - | 4.97 | 43,314 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,903 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,940 |
| One Border Countries | 0 | - | 4.98 | 472,535 |
