| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,737 |
| Countries with Glaciers | 0 | - | 4.97 | 105,494 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,710 |
| Least-Forested Countries | 0 | - | 4.53 | 65,249 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,122 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,524,452 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,669 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,845 |
| Landlocked Countries | 0 | - | 4.99 | 421,249 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,706 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,773,279 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,095 |
| Himalayan Countries | 0 | - | 4.95 | 138,402 |
| Andean Countries | 0 | - | 4.93 | 84,421 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,637 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,575 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,265 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,669 |
| Danube Countries | 0 | - | 4.97 | 71,922 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,906 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,335 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,145 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,604 |
| European Landlocked Countries | 0 | - | 4.99 | 147,057 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,503 |
| Countries with the Most Species | 0 | - | 4.99 | 103,162 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,653 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,545 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,688 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,489 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,170 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,582 |
| Countries in the Alps | 0 | - | 4.87 | 118,083 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,567 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,891 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,599 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,526 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,411 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,890 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,573 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,429 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,132 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,778 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,606 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,468 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,145 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,405 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,444 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,718 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,240 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 60,894 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,936 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,567 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,886 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,164 |
| Largest Countries By Category | 0 | - | 4.97 | 158,072 |
| Countries by Countries | 0 | - | 4.96 | 63,109 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,584 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,252 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,540 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,597 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,965 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,309 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,763 |
| Island Countries | 0 | - | 4.99 | 710,768 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,905 |
| Northernmost Countries | 0 | - | 4.99 | 361,626 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,649 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,586 |
| Countries of South America | 0 | - | 5.00 | 926,241 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,486 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,874,835 |
| "Land" Countries | 0 | - | 4.98 | 337,095 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,155 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,793 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,704 |
| Countries with Megacities | 0 | - | 4.99 | 264,089 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,541 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,376 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,811 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,431 |
| Countries by Official Language | 0 | - | 4.95 | 195,098 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,168 |
| Countries in their Native Language | 0 | - | 4.99 | 198,820 |
| Independence from Whom | 0 | - | 4.99 | 211,918 |
| Subdivisions by Country | 0 | - | 4.86 | 50,396 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,603 |
| Megadiverse Countries | 0 | - | 4.96 | 134,951 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,948 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,307 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,882 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,083 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,018 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,555 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,358 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,986 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,606 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,056 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,530 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,837 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,154 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,922 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,306 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,455 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,970 |
| World Map Quiz | 0 | - | 4.81 | 64,991 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,878 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,274 |
| Countries by Founding Story | 0 | - | 4.95 | 77,303 |
| Countries by Road Signs | 0 | - | 4.98 | 53,936 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,951 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,192 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,914 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,010 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,815 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,940 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,243 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,400 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,517 |
| Widest Countries East to West | 0 | - | 4.92 | 129,579 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,434 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,293 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,096 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,716 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,507 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,785 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,341 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,785 |
| Countries with Double Letters | 0 | - | 4.96 | 96,034 |
| Countries that End in N | 0 | - | 4.95 | 170,924 |
| Countries with Five Letters | 0 | - | 4.96 | 282,085 |
| Countries with Six Letters | 0 | - | 4.94 | 213,341 |
| Countries with W | 0 | - | 4.97 | 160,171 |
| Countries with Z | 0 | - | 4.98 | 291,222 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,535 |
| Countries That End in U | 0 | - | 4.95 | 120,760 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,305 |
| Countries that End in O | 0 | - | 4.92 | 159,453 |
| Countries that End in R | 0 | - | 4.87 | 118,918 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,679 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,907 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,588 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,398 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,312 |
| Countries That End in Y | 0 | - | 4.91 | 185,825 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,785 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,750 |
| Countries that End in I | 0 | - | 4.94 | 135,043 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,957 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,764 |
| Countries That End in NIA | 0 | - | 4.92 | 109,716 |
| Countries That End in BIA | 0 | - | 4.93 | 149,118 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,013 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,344 |
| Countries That End in RIA | 0 | - | 4.93 | 126,755 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,934 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,363 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,574 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,966 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,545 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,529 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,941 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,422 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,448 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,371 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,185 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,873 |
| Countries that End in L | 0 | - | 4.94 | 156,760 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,319 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,241 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,961 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,898 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,928 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,602 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,556 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,911 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,442 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,315 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,804 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,057 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,683 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,819 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,986 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,677 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,156 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,831,926 |
| One Border Countries | 0 | - | 4.98 | 469,381 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,628,125 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,463 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,344 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,425 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,822 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,018 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,016 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,491 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,638 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,155 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,995 |
| Countries by National Anthem | 0 | - | 4.93 | 71,267 |
| NATO Countries | 0 | - | 4.98 | 281,015 |
