| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 110,059 |
| Countries with the Most Forest | 0 | - | 4.88 | 148,330 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 65,074 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,205 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,005,717 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,829 |
| Landlocked Countries | 0 | - | 4.99 | 427,695 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,973 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,534 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,128 |
| Himalayan Countries | 0 | - | 4.93 | 141,010 |
| Andean Countries | 0 | - | 4.94 | 85,895 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,007 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,623 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,551 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,757 |
| Danube Countries | 0 | - | 4.97 | 72,607 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,872 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,020 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,526 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,010 |
| European Landlocked Countries | 0 | - | 4.99 | 147,820 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,605 |
| Countries with the Most Species | 0 | - | 4.99 | 103,672 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,710 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,832 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,974 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,958 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,707 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,175 |
| Countries in the Alps | 0 | - | 4.87 | 119,047 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,118 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,253 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,091 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,218 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,190 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,424 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,643 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,033 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,537 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,350 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,977 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,851 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,705 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,961 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,063 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,256 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,768 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,768 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,904 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,557 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,632 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,642 |
| Largest Countries By Category | 0 | - | 4.97 | 159,188 |
| Countries by Countries | 0 | - | 4.97 | 63,853 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,520 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,458 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,717 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,602 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,289 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,031 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,173 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,632 |
| Island Countries | 0 | - | 4.99 | 713,192 |
| Least-Forested Countries | 0 | - | 4.53 | 65,484 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,416 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,716 |
| Northernmost Countries | 0 | - | 4.99 | 364,829 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,768 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,962 |
| Countries of South America | 0 | - | 5.00 | 934,909 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,254 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,626 |
| "Land" Countries | 0 | - | 4.98 | 339,170 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,445 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,652 |
| Countries with Megacities | 0 | - | 4.99 | 268,171 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,294 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,406 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,628 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,521 |
| Countries by Official Language | 0 | - | 4.95 | 196,326 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,084 |
| Countries in their Native Language | 0 | - | 4.99 | 200,038 |
| Independence from Whom | 0 | - | 4.99 | 213,535 |
| Subdivisions by Country | 0 | - | 4.87 | 50,682 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,751 |
| Megadiverse Countries | 0 | - | 4.96 | 149,755 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,216 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,594 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,845 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,272 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,548 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,956 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,374 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,655 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,208 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,299 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,891 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,517 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,530 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,249 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,669 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,010 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,887 |
| World Map Quiz | 0 | - | 4.81 | 65,983 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,162 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,863 |
| Countries by Founding Story | 0 | - | 4.95 | 77,948 |
| Countries by Road Signs | 0 | - | 4.98 | 54,498 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,630 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,290 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,763 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,061 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,615 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,729 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,903 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,784 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,014 |
| Widest Countries East to West | 0 | - | 4.92 | 130,906 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,466 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,585 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,196 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,478 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,649 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 37,985 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,771 |
| Countries that End in N | 0 | - | 4.95 | 172,775 |
| Countries with Five Letters | 0 | - | 4.96 | 284,832 |
| Countries with Six Letters | 0 | - | 4.94 | 215,109 |
| Countries with W | 0 | - | 4.96 | 161,422 |
| Countries with Z | 0 | - | 4.98 | 293,164 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,793 |
| Countries That End in U | 0 | - | 4.95 | 121,455 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,541 |
| Countries that End in O | 0 | - | 4.92 | 160,423 |
| Countries that End in R | 0 | - | 4.87 | 119,315 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,086 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,260 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,610 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,298 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,970 |
| Countries That End in Y | 0 | - | 4.91 | 186,203 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,509 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,481 |
| Countries that End in I | 0 | - | 4.94 | 135,461 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,446 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,180 |
| Countries That End in NIA | 0 | - | 4.92 | 110,194 |
| Countries That End in BIA | 0 | - | 4.93 | 149,788 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,002 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,948 |
| Countries That End in RIA | 0 | - | 4.93 | 127,195 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,590 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,065 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,463 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,925 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,484 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,955 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,514 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,621 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,113 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,771 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,967 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,686 |
| Countries that End in L | 0 | - | 4.94 | 157,293 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,807 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,391 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,918 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,186 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,570 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,755 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,377 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,569 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,474 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,261 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,359 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,310 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,986 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,894 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,390 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,812 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,200 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,213 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,855,429 |
| One Border Countries | 0 | - | 4.98 | 472,846 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,662,282 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,561 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,648 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,781 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,507 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,621 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,889 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,259 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,424 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,762 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,673 |
