| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,571 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,753 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,329 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,087 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,035,086 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,481 |
| Landlocked Countries | 0 | - | 4.99 | 415,089 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,420 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,728,687 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,184 |
| Himalayan Countries | 0 | - | 4.95 | 135,885 |
| Andean Countries | 0 | - | 4.94 | 83,120 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,448 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,557 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,149 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,801 |
| Danube Countries | 0 | - | 4.97 | 71,241 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,959 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,679 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,806 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,730 |
| European Landlocked Countries | 0 | - | 4.99 | 145,942 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,472 |
| Countries with the Most Species | 0 | - | 4.99 | 95,325 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,606 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,255 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,430 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,046 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,700 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,057 |
| Countries in the Alps | 0 | - | 4.86 | 117,081 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,731 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,540 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,141 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,561 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,344 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,124 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,759 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,877 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,665 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,189 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,262 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,127 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,597 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,858 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,873 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,404 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,776 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,341 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,985 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,122 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,115 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,710 |
| Largest Countries By Category | 0 | - | 4.97 | 156,984 |
| Countries by Countries | 0 | - | 4.96 | 62,416 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,620 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,012 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,374 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,916 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,606 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,662 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,623 |
| Island Countries | 0 | - | 4.99 | 708,209 |
| Least-Forested Countries | 0 | - | 4.53 | 64,966 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,803 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,397 |
| Northernmost Countries | 0 | - | 4.99 | 358,564 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,502 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,182 |
| Countries of South America | 0 | - | 5.00 | 917,384 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,543 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,853,367 |
| "Land" Countries | 0 | - | 4.98 | 334,035 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,263 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,838 |
| Countries with Megacities | 0 | - | 4.99 | 248,043 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,709 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,307 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,091 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,261 |
| Countries by Official Language | 0 | - | 4.95 | 193,105 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,601 |
| Countries in their Native Language | 0 | - | 4.99 | 196,949 |
| Independence from Whom | 0 | - | 4.99 | 210,084 |
| Subdivisions by Country | 0 | - | 4.86 | 50,129 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,024 |
| Megadiverse Countries | 0 | - | 4.97 | 134,209 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,107 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,001 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,523 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,897 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,852 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,109 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,293 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,384 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,283 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,778 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,864 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,499 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,603 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,574 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,780 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,111 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,042 |
| World Map Quiz | 0 | - | 4.81 | 63,741 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,488 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,545 |
| Countries by Founding Story | 0 | - | 4.95 | 76,689 |
| Countries by Road Signs | 0 | - | 4.98 | 53,254 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,729 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,482 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,210 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,235 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,084 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,288 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,474 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,058 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,507 |
| Widest Countries East to West | 0 | - | 4.92 | 129,004 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,281 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,451 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,640 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,844 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,794 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,205 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,378 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,711 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,634 |
| Countries with Double Letters | 0 | - | 4.96 | 93,652 |
| Countries that End in N | 0 | - | 4.94 | 157,110 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,987 |
| Countries with Six Letters | 0 | - | 4.93 | 210,649 |
| Countries with W | 0 | - | 4.97 | 158,404 |
| Countries with Z | 0 | - | 4.98 | 288,200 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,739 |
| Countries That End in U | 0 | - | 4.95 | 119,599 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,844 |
| Countries that End in O | 0 | - | 4.92 | 158,639 |
| Countries that End in R | 0 | - | 4.87 | 118,361 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,924 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,380 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,520 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,628 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,179 |
| Countries That End in Y | 0 | - | 4.90 | 185,277 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,593 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,881 |
| Countries that End in I | 0 | - | 4.94 | 134,525 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,435 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,286 |
| Countries That End in NIA | 0 | - | 4.92 | 109,109 |
| Countries That End in BIA | 0 | - | 4.92 | 147,842 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,234 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,622 |
| Countries That End in RIA | 0 | - | 4.93 | 126,187 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,163 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,658 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,653 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,010 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,557 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,016 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,269 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,777 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,666 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,883 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,324 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,974 |
| Countries that End in L | 0 | - | 4.94 | 156,144 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,018 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,018 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,614 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,438 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,510 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,913 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,599 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,539 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,623 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,993 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,903 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,805 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,236 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,458 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,405 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,523 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,271 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,123 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,806,909 |
| One Border Countries | 0 | - | 4.98 | 465,488 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,595,538 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,350 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 44,984 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,128 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,461 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,127 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,608 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,912 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,485 |
| Majority Muslim Countries | 0 | - | 4.98 | 370,642 |
| Countries by National Anthem | 0 | - | 4.93 | 71,069 |
| NATO Countries | 0 | - | 4.98 | 277,072 |
