| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.98 | 110,032 |
| Countries with Glaciers | 0 | - | 4.97 | 105,831 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,987 |
| Least-Forested Countries | 0 | - | 4.53 | 65,431 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,358 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,910,034 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,794 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 37,957 |
| Landlocked Countries | 0 | - | 4.99 | 426,355 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,913 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,807,008 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,476 |
| Himalayan Countries | 0 | - | 4.93 | 140,427 |
| Andean Countries | 0 | - | 4.94 | 85,569 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,719 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,166 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,281 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,520 |
| Danube Countries | 0 | - | 4.97 | 72,454 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,666 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,887 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,230 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,706 |
| European Landlocked Countries | 0 | - | 4.99 | 147,649 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,368 |
| Countries with the Most Species | 0 | - | 4.99 | 103,594 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,475 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,788 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,905 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,870 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,606 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,055 |
| Countries in the Alps | 0 | - | 4.87 | 118,836 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,744 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,964 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,996 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,073 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,010 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,301 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,455 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,903 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,453 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,221 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,906 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,769 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,593 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,834 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,929 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,945 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,647 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,055 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,728 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,892 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,256 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,544 |
| Largest Countries By Category | 0 | - | 4.97 | 158,930 |
| Countries by Countries | 0 | - | 4.96 | 63,690 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,310 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,420 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,685 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,460 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,134 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,824 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,810 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,925 |
| Island Countries | 0 | - | 4.99 | 712,710 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,217 |
| Northernmost Countries | 0 | - | 4.99 | 364,211 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,739 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,875 |
| Countries of South America | 0 | - | 5.00 | 933,229 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,202 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,591 |
| "Land" Countries | 0 | - | 4.98 | 338,506 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,196 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,901 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,280 |
| Countries with Megacities | 0 | - | 4.99 | 267,366 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,953 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,208 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,272 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,312 |
| Countries by Official Language | 0 | - | 4.95 | 196,083 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,738 |
| Countries in their Native Language | 0 | - | 4.99 | 199,808 |
| Independence from Whom | 0 | - | 4.99 | 213,179 |
| Subdivisions by Country | 0 | - | 4.87 | 50,636 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,536 |
| Megadiverse Countries | 0 | - | 4.96 | 139,842 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,005 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,552 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,737 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,234 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,330 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,879 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,164 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,584 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,104 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,269 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,618 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,407 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,458 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,167 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,600 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,901 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,470 |
| World Map Quiz | 0 | - | 4.81 | 65,798 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,470 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,747 |
| Countries by Founding Story | 0 | - | 4.95 | 77,844 |
| Countries by Road Signs | 0 | - | 4.98 | 54,383 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,349 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,143 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,607 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,692 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,478 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,590 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,785 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,715 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,815 |
| Widest Countries East to West | 0 | - | 4.92 | 130,762 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,611 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,293 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,529 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,090 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,025 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,514 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,514 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,903 |
| Countries with Double Letters | 0 | - | 4.96 | 97,177 |
| Countries that End in N | 0 | - | 4.95 | 172,122 |
| Countries with Five Letters | 0 | - | 4.96 | 284,126 |
| Countries with Six Letters | 0 | - | 4.94 | 214,596 |
| Countries with W | 0 | - | 4.96 | 161,028 |
| Countries with Z | 0 | - | 4.98 | 292,564 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,364 |
| Countries That End in U | 0 | - | 4.95 | 121,235 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,179 |
| Countries that End in O | 0 | - | 4.92 | 160,253 |
| Countries that End in R | 0 | - | 4.87 | 119,208 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,975 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,936 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,209 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,871 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,796 |
| Countries That End in Y | 0 | - | 4.91 | 186,106 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,516 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,315 |
| Countries that End in I | 0 | - | 4.94 | 135,346 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,678 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,086 |
| Countries That End in NIA | 0 | - | 4.92 | 110,090 |
| Countries That End in BIA | 0 | - | 4.93 | 149,621 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,666 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,805 |
| Countries That End in RIA | 0 | - | 4.93 | 127,083 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,436 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,699 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,244 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,692 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,243 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,834 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,359 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,551 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,949 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,666 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,778 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,476 |
| Countries that End in L | 0 | - | 4.94 | 157,170 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,177 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,357 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,562 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,038 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,481 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,504 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,196 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,461 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,322 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,038 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,251 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,258 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,847 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,285 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,766 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,655 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,198 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,850,252 |
| One Border Countries | 0 | - | 4.98 | 472,153 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,655,231 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,540 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,564 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,708 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,368 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,318 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,716 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,937 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,270 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,658 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,932 |
| Countries by National Anthem | 0 | - | 4.92 | 71,419 |
