| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,792 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,777 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,821 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,685,332 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,728 |
| Landlocked Countries | 0 | - | 4.99 | 423,269 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,800 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,787,825 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,117 |
| Himalayan Countries | 0 | - | 4.94 | 139,301 |
| Andean Countries | 0 | - | 4.93 | 84,925 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,140 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,303 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,719 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,034 |
| Danube Countries | 0 | - | 4.97 | 72,155 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,232 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,566 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,586 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,097 |
| European Landlocked Countries | 0 | - | 4.99 | 147,310 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,879 |
| Countries with the Most Species | 0 | - | 4.99 | 103,361 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,010 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,657 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,773 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,636 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,395 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,805 |
| Countries in the Alps | 0 | - | 4.87 | 118,412 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,863 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,329 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,772 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,747 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,659 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,062 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,850 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,629 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,261 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,984 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,734 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,606 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,345 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,592 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,658 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,232 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,429 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,912 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,281 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,633 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,496 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,335 |
| Largest Countries By Category | 0 | - | 4.97 | 158,449 |
| Countries by Countries | 0 | - | 4.96 | 63,387 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,904 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,332 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,601 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,159 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,821 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,740 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,927 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,163 |
| Island Countries | 0 | - | 4.99 | 711,534 |
| Least-Forested Countries | 0 | - | 4.53 | 65,329 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,240 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,534 |
| Northernmost Countries | 0 | - | 4.99 | 362,633 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,690 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,709 |
| Countries of South America | 0 | - | 5.00 | 929,172 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,180 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,881,404 |
| "Land" Countries | 0 | - | 4.98 | 337,703 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,004 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,293 |
| Countries with Megacities | 0 | - | 4.99 | 265,486 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,112 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,675 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,360 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,748 |
| Countries by Official Language | 0 | - | 4.95 | 195,516 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,754 |
| Countries in their Native Language | 0 | - | 4.99 | 199,302 |
| Independence from Whom | 0 | - | 4.99 | 212,402 |
| Subdivisions by Country | 0 | - | 4.87 | 50,500 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,957 |
| Megadiverse Countries | 0 | - | 4.96 | 135,112 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,325 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,429 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,310 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,145 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,304 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,670 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,648 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,430 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,722 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,190 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,966 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,976 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,287 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,025 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,448 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,564 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,626 |
| World Map Quiz | 0 | - | 4.81 | 65,279 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,949 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,475 |
| Countries by Founding Story | 0 | - | 4.95 | 77,476 |
| Countries by Road Signs | 0 | - | 4.98 | 54,147 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,362 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,446 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,150 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,673 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,049 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,161 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,420 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,512 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,675 |
| Widest Countries East to West | 0 | - | 4.92 | 129,783 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,484 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,807 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,402 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,862 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,738 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,000 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,423 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,891 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,827 |
| Countries with Double Letters | 0 | - | 4.96 | 96,546 |
| Countries that End in N | 0 | - | 4.95 | 171,442 |
| Countries with Five Letters | 0 | - | 4.96 | 282,997 |
| Countries with Six Letters | 0 | - | 4.94 | 213,865 |
| Countries with W | 0 | - | 4.96 | 160,549 |
| Countries with Z | 0 | - | 4.98 | 291,795 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,912 |
| Countries That End in U | 0 | - | 4.95 | 120,969 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,681 |
| Countries that End in O | 0 | - | 4.92 | 159,621 |
| Countries that End in R | 0 | - | 4.87 | 119,043 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,800 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,366 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,853 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,604 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,512 |
| Countries That End in Y | 0 | - | 4.91 | 185,956 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,097 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,014 |
| Countries that End in I | 0 | - | 4.94 | 135,181 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,278 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,897 |
| Countries That End in NIA | 0 | - | 4.92 | 109,866 |
| Countries That End in BIA | 0 | - | 4.93 | 149,336 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,257 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,549 |
| Countries That End in RIA | 0 | - | 4.93 | 126,903 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,149 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,947 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,881 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,312 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,861 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,651 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,145 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,474 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,652 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,517 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,445 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,138 |
| Countries that End in L | 0 | - | 4.94 | 156,944 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,397 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,296 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,112 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,038 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,083 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,982 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,843 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,255 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,983 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,642 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,995 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,150 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,740 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,067 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,309 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,476 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,178 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,839,696 |
| One Border Countries | 0 | - | 4.98 | 470,626 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,639,463 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,500 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,440 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,545 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,059 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,496 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,344 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,678 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,889 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,349 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,279 |
| Countries by National Anthem | 0 | - | 4.93 | 71,333 |
| NATO Countries | 0 | - | 4.98 | 282,177 |
