| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,754 |
| Countries with Glaciers | 0 | - | 4.97 | 105,525 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,743 |
| Least-Forested Countries | 0 | - | 4.53 | 65,269 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,153 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,560,782 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,683 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,855 |
| Landlocked Countries | 0 | - | 4.99 | 421,691 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,728 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,776,790 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,310 |
| Himalayan Countries | 0 | - | 4.95 | 138,601 |
| Andean Countries | 0 | - | 4.93 | 84,532 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,723 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,721 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,360 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,751 |
| Danube Countries | 0 | - | 4.97 | 71,972 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,972 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,387 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,245 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,723 |
| European Landlocked Countries | 0 | - | 4.99 | 147,108 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,580 |
| Countries with the Most Species | 0 | - | 4.99 | 103,207 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,713 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,574 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,708 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,519 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,203 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,628 |
| Countries in the Alps | 0 | - | 4.87 | 118,164 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,919 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,991 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,626 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,569 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,467 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,925 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,640 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,465 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,161 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,817 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,638 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,499 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,195 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,441 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,492 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,834 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,287 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,337 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,028 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,781 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,016 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,201 |
| Largest Countries By Category | 0 | - | 4.97 | 158,171 |
| Countries by Countries | 0 | - | 4.96 | 63,169 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,650 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,271 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,556 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,651 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,336 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,438 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,021 |
| Island Countries | 0 | - | 4.99 | 710,938 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,499 |
| Northernmost Countries | 0 | - | 4.99 | 361,823 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,652 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,609 |
| Countries of South America | 0 | - | 5.00 | 926,991 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,402 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,425 |
| "Land" Countries | 0 | - | 4.98 | 337,258 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,163 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,958 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,810 |
| Countries with Megacities | 0 | - | 4.99 | 264,387 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,669 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,433 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,935 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,498 |
| Countries by Official Language | 0 | - | 4.95 | 195,201 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,287 |
| Countries in their Native Language | 0 | - | 4.99 | 198,990 |
| Independence from Whom | 0 | - | 4.99 | 212,024 |
| Subdivisions by Country | 0 | - | 4.86 | 50,421 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,678 |
| Megadiverse Countries | 0 | - | 4.96 | 134,983 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,033 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,332 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,218 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,093 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,086 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,578 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,424 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,012 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,632 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,131 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,629 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,860 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,186 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,948 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,335 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,476 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,110 |
| World Map Quiz | 0 | - | 4.81 | 65,045 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,141 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,328 |
| Countries by Founding Story | 0 | - | 4.95 | 77,344 |
| Countries by Road Signs | 0 | - | 4.98 | 53,989 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,027 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,244 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,965 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,122 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,858 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,981 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,269 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,424 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,551 |
| Widest Countries East to West | 0 | - | 4.92 | 129,619 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,442 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,346 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,110 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,749 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,562 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,840 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,364 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,795 |
| Countries with Double Letters | 0 | - | 4.96 | 96,166 |
| Countries that End in N | 0 | - | 4.95 | 171,043 |
| Countries with Five Letters | 0 | - | 4.96 | 282,300 |
| Countries with Six Letters | 0 | - | 4.94 | 213,474 |
| Countries with W | 0 | - | 4.97 | 160,274 |
| Countries with Z | 0 | - | 4.98 | 291,358 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,639 |
| Countries That End in U | 0 | - | 4.95 | 120,819 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,400 |
| Countries that End in O | 0 | - | 4.92 | 159,487 |
| Countries that End in R | 0 | - | 4.87 | 118,948 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,705 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,011 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,646 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,443 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,357 |
| Countries That End in Y | 0 | - | 4.91 | 185,855 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,858 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,818 |
| Countries that End in I | 0 | - | 4.94 | 135,066 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,030 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,799 |
| Countries That End in NIA | 0 | - | 4.92 | 109,758 |
| Countries That End in BIA | 0 | - | 4.93 | 149,163 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,070 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,393 |
| Countries That End in RIA | 0 | - | 4.93 | 126,782 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,986 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,514 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,655 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,057 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,617 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,555 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,991 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,433 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,492 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,399 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,247 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,943 |
| Countries that End in L | 0 | - | 4.94 | 156,802 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,577 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,255 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,999 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,928 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,971 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,686 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,611 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,949 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,500 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,387 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,838 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,081 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,697 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,851 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,715 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,860 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,161 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,833,665 |
| One Border Countries | 0 | - | 4.98 | 469,720 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,630,719 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,472 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,367 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,448 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,877 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,121 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,100 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,531 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,702 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,194 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,334 |
| Countries by National Anthem | 0 | - | 4.93 | 71,283 |
| NATO Countries | 0 | - | 4.98 | 281,359 |
