| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 95,450 |
| Countries with Glaciers | 0 | - | 4.97 | 97,454 |
| Countries by Change in Carbon Dioxide Emissions | 0 | - | 4.92 | 48,558 |
| Least-Forested Countries | 0 | - | 4.51 | 61,441 |
| Tropical Rainforest Countries | 0 | - | 4.66 | 69,936 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,777,165 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.58 | 45,009 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 35,704 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 334,536 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,173,622 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,230,064 |
| Members of the Arab League | 0 | - | 4.86 | 66,375 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,546 |
| Himalayan Countries | 0 | - | 4.94 | 108,496 |
| Andean Countries | 0 | - | 4.91 | 60,256 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,422 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,877 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,501 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,867 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,287 |
| Danube Countries | 0 | - | 4.96 | 57,244 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,255 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,311 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,745 |
| Countries with the Worst Passports | 0 | - | 4.88 | 50,433 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,072 |
| European Landlocked Countries | 0 | - | 4.99 | 137,233 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,839 |
| Countries with the Most Species | 0 | - | 4.99 | 89,865 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,374 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,033 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,326 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,084 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,896 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,143 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,949 |
| Countries in the Alps | 0 | - | 4.84 | 103,902 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,467 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,590 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,304 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,401 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,924 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,372 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,576 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,791 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,712 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,440 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,200 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,041 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,037 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,603 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,695 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,269 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,629 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,977 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,067 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 202,732 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,486 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,855 |
| Largest Countries By Category | 0 | - | 4.97 | 146,476 |
| Countries by Countries | 0 | - | 4.95 | 55,639 |
| Country Flags with the Most White | 0 | - | 4.90 | 126,594 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,221 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 45,145 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,656 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 345,179 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 362,784 |
| Island Countries Quiz | 0 | - | 4.99 | 668,810 |
| Biggest Countries by Area | 0 | - | 5.00 | 947,770 |
| Northernmost Countries | 0 | - | 4.99 | 330,976 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 32,643 |
| Worst Plastic Polluting Countries | 0 | - | 4.55 | 61,157 |
| Countries of South America | 0 | - | 5.00 | 810,230 |
| Countries of Oceania | 0 | - | 5.00 | 914,077 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,612,020 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,082 |
| Countries with Megacities | 0 | - | 4.99 | 201,902 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,426 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,986 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,281 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,908 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,131 |
| Countries by Official Language | 0 | - | 4.96 | 175,277 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,314 |
| Countries in their Native Language | 0 | - | 4.98 | 180,628 |
| Independence from Whom | 0 | - | 4.99 | 189,418 |
| Subdivisions by Country | 0 | - | 4.84 | 46,898 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,665 |
| Megadiverse Countries | 0 | - | 4.96 | 126,821 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 93,950 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,600 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,832 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,370 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,902 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,665 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,051 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,730 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,860 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,090 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,276 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,955 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,492 |
| Most Forested European Countries | 0 | - | 4.82 | 69,327 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,410 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,038 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,579 |
| World Map Quiz | 0 | - | 4.90 | 51,478 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 118,568 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,750 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,798 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,844 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 109,992 |
| Countries With the Most Languages | 0 | - | 4.90 | 177,796 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,704 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,089 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 88,309 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 55,103 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,589 |
| Widest Countries East to West | 0 | - | 4.93 | 120,565 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,122 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,554 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,837 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,421 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,862 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,667 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,494 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,803 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,416 |
| Countries with Double Letters | 0 | - | 4.96 | 71,827 |
| Countries that End in N | 0 | - | 4.94 | 136,013 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 233,891 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 190,580 |
| Countries with W | 0 | - | 4.96 | 125,673 |
| Countries with Z | 0 | - | 4.98 | 264,698 |
| Countries with Letters Missing | 0 | - | 4.97 | 169,695 |
| Countries That End in U | 0 | - | 4.95 | 109,348 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,392 |
| Countries that End in O | 0 | - | 4.92 | 148,656 |
| Countries that End in R | 0 | - | 4.85 | 97,321 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,098 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,193 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,713 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,705 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,646 |
| Countries That End in Y | 0 | - | 4.90 | 162,421 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,006 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,391 |
| Countries that End in I | 0 | - | 4.92 | 115,203 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,645 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,390 |
| Countries That End in NIA | 0 | - | 4.92 | 101,824 |
| Countries That End in BIA | 0 | - | 4.91 | 127,317 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,170 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 110,981 |
| Countries That End in RIA | 0 | - | 4.90 | 101,900 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,770 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 204,622 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,633 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,771 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,306 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,909 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,852 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,178 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,695 |
| Countries with the Word "And" | 0 | - | 4.98 | 85,079 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,507 |
| Countries that End in L | 0 | - | 4.95 | 135,850 |
| "Land" Countries | 0 | - | 4.98 | 292,359 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,288 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,893 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,371 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,082 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,626 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,121 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,030 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,831 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,935 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,439 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,590 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,630 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,316 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,284 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,385 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,093 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,423 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,117,959 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.02 | 48,283 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,470,517 |
| One Border Countries | 0 | - | 4.98 | 415,825 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 25,965 |
| Countries with the Most HIV | 0 | - | 4.50 | 43,050 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 32,068 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,454 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,407 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,593 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,275 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,285 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 51,354 |
| Majority Muslim Countries | 0 | - | 4.97 | 317,557 |
| Countries by National Anthem | 0 | - | 4.95 | 68,648 |
