| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,561 |
| Countries with Glaciers | 0 | - | 4.97 | 104,736 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,296 |
| Least-Forested Countries | 0 | - | 4.53 | 64,944 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,773 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,999,293 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,467 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,705 |
| Landlocked Countries | 0 | - | 4.99 | 414,581 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,403 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,724,837 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,996 |
| Himalayan Countries | 0 | - | 4.95 | 135,698 |
| Andean Countries | 0 | - | 4.94 | 83,026 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,374 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,435 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,076 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,735 |
| Danube Countries | 0 | - | 4.97 | 71,180 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,899 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,637 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,703 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,607 |
| European Landlocked Countries | 0 | - | 4.99 | 145,876 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,363 |
| Countries with the Most Species | 0 | - | 4.99 | 95,299 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,531 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,235 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,404 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,015 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,653 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,023 |
| Countries in the Alps | 0 | - | 4.86 | 116,983 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,682 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,454 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,107 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,509 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,297 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,093 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,697 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,838 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,595 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,151 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,230 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,099 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,536 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,827 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,829 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,290 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,735 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,311 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,938 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,837 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,995 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,683 |
| Largest Countries By Category | 0 | - | 4.97 | 156,908 |
| Countries by Countries | 0 | - | 4.96 | 62,359 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,549 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,999 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,357 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,857 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,166 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,483 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,328 |
| Island Countries | 0 | - | 4.99 | 707,999 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,785 |
| Northernmost Countries | 0 | - | 4.99 | 358,261 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,485 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,149 |
| Countries of South America | 0 | - | 5.00 | 916,571 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,609 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,767 |
| "Land" Countries | 0 | - | 4.98 | 333,912 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,084 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,061 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,697 |
| Countries with Megacities | 0 | - | 4.99 | 247,743 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,547 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,236 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,951 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,178 |
| Countries by Official Language | 0 | - | 4.95 | 192,974 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,428 |
| Countries in their Native Language | 0 | - | 4.99 | 196,837 |
| Independence from Whom | 0 | - | 4.99 | 209,947 |
| Subdivisions by Country | 0 | - | 4.86 | 50,113 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,929 |
| Megadiverse Countries | 0 | - | 4.97 | 133,977 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,006 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,967 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,481 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,886 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,784 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,068 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,212 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,229 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,263 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,767 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,763 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,464 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,567 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,554 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,747 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,076 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,878 |
| World Map Quiz | 0 | - | 4.81 | 63,680 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,234 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,438 |
| Countries by Founding Story | 0 | - | 4.95 | 76,635 |
| Countries by Road Signs | 0 | - | 4.98 | 53,210 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,603 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,375 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,118 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,096 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,016 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,211 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,410 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,019 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,454 |
| Widest Countries East to West | 0 | - | 4.92 | 128,954 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,260 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,364 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,615 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,781 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,723 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,153 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 74,080 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,625 |
| Countries with Double Letters | 0 | - | 4.96 | 93,576 |
| Countries that End in N | 0 | - | 4.94 | 157,056 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,894 |
| Countries with Six Letters | 0 | - | 4.93 | 210,559 |
| Countries with W | 0 | - | 4.97 | 158,352 |
| Countries with Z | 0 | - | 4.98 | 288,084 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,677 |
| Countries That End in U | 0 | - | 4.95 | 119,586 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,779 |
| Countries that End in O | 0 | - | 4.92 | 158,615 |
| Countries that End in R | 0 | - | 4.87 | 118,337 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,907 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,289 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,466 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,590 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,129 |
| Countries That End in Y | 0 | - | 4.90 | 185,255 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,523 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,820 |
| Countries that End in I | 0 | - | 4.94 | 134,498 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,357 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,256 |
| Countries That End in NIA | 0 | - | 4.92 | 109,077 |
| Countries That End in BIA | 0 | - | 4.92 | 147,797 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,180 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,585 |
| Countries That End in RIA | 0 | - | 4.93 | 126,153 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,114 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,553 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,617 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,980 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,472 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,979 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,214 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,737 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,614 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,856 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,251 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,918 |
| Countries that End in L | 0 | - | 4.94 | 156,107 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,758 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,008 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,579 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,379 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,484 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,727 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,495 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 140,609 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,539 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,906 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,846 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,773 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,219 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,447 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,383 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,721 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,054 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,117 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,804,920 |
| One Border Countries | 0 | - | 4.98 | 465,060 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,592,907 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,341 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,949 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,068 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,331 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,068 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,575 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,853 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,440 |
| Majority Muslim Countries | 0 | - | 4.98 | 369,711 |
| Countries by National Anthem | 0 | - | 4.92 | 71,054 |
| NATO Countries | 0 | - | 4.98 | 276,690 |
