| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 108,458 |
| Countries of the World Quiz | 0 | - | 5.00 | 44,994,109 |
| Countries with Glaciers | 0 | - | 4.97 | 102,276 |
| Countries with the Most Forest | 0 | - | 4.88 | 143,944 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.88 | 62,376 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 391,559 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,458,376 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,536,222 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 76,922 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 363,397 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 387,372 |
| Island Countries Quiz | 0 | - | 4.99 | 696,057 |
| Sahara Desert Countries | 0 | - | 4.98 | 150,079 |
| Himalayan Countries | 0 | - | 4.94 | 126,162 |
| Andean Countries | 0 | - | 4.93 | 71,024 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 58,457 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 116,157 |
| Coffee Producing Countries | 0 | - | 4.83 | 61,800 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 60,878 |
| Danube Countries | 0 | - | 4.97 | 61,908 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 98,327 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 82,909 |
| Countries with the Worst Passports | 0 | - | 4.92 | 75,887 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 141,448 |
| European Landlocked Countries | 0 | - | 4.99 | 142,620 |
| Partially Recognized Countries | 0 | - | 4.98 | 100,198 |
| Countries with the Most Species | 0 | - | 4.99 | 93,285 |
| Countries 197 to 205 | 0 | - | 4.88 | 65,125 |
| Tropic of Cancer Countries | 0 | - | 4.95 | 47,163 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 46,249 |
| Countries that Use the Peso | 0 | - | 4.89 | 57,164 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 70,684 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 54,619 |
| Countries in the Alps | 0 | - | 4.86 | 112,281 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 91,793 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 99,839 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 76,177 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 91,685 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 112,141 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 92,789 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 96,344 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 50,644 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 48,610 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 59,673 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 51,831 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 39,637 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 100,980 |
| Arctic Ocean Countries | 0 | - | 4.94 | 76,647 |
| Countries with the Most Grassland | 0 | - | 4.93 | 74,478 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 111,335 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 65,603 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 57,506 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.94 | 40,871 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 227,055 |
| World Countries - Blind Typing | 0 | - | 5.00 | 98,097 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 45,842 |
| Largest Countries By Category | 0 | - | 4.97 | 152,741 |
| Countries by Countries | 0 | - | 4.96 | 59,430 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,290,111 |
| Country Flags with the Most White | 0 | - | 4.85 | 133,496 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,013 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 85,011 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,007,784 |
| Northernmost Countries | 0 | - | 4.99 | 345,426 |
| Countries of South America | 0 | - | 5.00 | 876,553 |
| Countries of Oceania | 0 | - | 5.00 | 992,772 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,760,557 |
| Elements Named for Countries | 0 | - | 4.51 | 22,943 |
| Asian Countries with the Most Christians | 0 | - | 4.87 | 93,007 |
| African Countries with the Most Christians | 0 | - | 4.93 | 72,759 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 192,209 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 117,149 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 110,220 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,394,953 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 367,660 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 163,147 |
| Countries with Megacities | 0 | - | 4.99 | 222,830 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 189,889 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 107,861 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 129,175 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 75,288 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 303,526 |
| Countries by Official Language | 0 | - | 4.95 | 186,337 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 285,037 |
| Countries in their Native Language | 0 | - | 4.98 | 190,645 |
| Independence from Whom | 0 | - | 4.99 | 202,882 |
| Subdivisions by Country | 0 | - | 4.85 | 49,004 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 125,914 |
| Megadiverse Countries | 0 | - | 4.97 | 131,368 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 124,271 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 53,453 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 122,781 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 73,581 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.86 | 49,610 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 157,059 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 60,333 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 88,880 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 150,242 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 81,120 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,664 |
| Countries by Sports League Revenue | 0 | - | 4.93 | 69,921 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 105,386 |
| Countries Furthest from the United States | 0 | - | 4.93 | 86,574 |
| Countries with the Highest HDI | 0 | - | 4.95 | 135,055 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 72,807 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 69,269 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 100,992 |
| World Map Quiz | 0 | - | 4.87 | 59,287 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 87,900 |
| Country Picture Puzzle Game #1 | 0 | - | 4.86 | 83,849 |
| Southernmost Countries of the World | 0 | - | 4.99 | 220,598 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 100,350 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 117,947 |
| Countries With the Most Languages | 0 | - | 4.89 | 192,259 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.94 | 98,170 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 89,728 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 94,943 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 59,079 |
| Tallest Countries North to South | 0 | - | 4.83 | 116,725 |
| Widest Countries East to West | 0 | - | 4.92 | 125,860 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,467 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 181,725 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 96,038 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 91,254 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 126,402 |
| Countries with the Most Desert | 0 | - | 4.93 | 124,234 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,319 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,868 |
| Countries with Double Letters | 0 | - | 4.97 | 86,396 |
| Countries that End in N | 0 | - | 4.94 | 149,845 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 250,373 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 203,935 |
| Countries with W | 0 | - | 4.97 | 152,902 |
| Countries with Z | 0 | - | 4.98 | 279,958 |
| Countries with Letters Missing | 0 | - | 4.97 | 179,425 |
| Countries That End in U | 0 | - | 4.95 | 116,397 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 103,480 |
| Countries that End in O | 0 | - | 4.92 | 155,944 |
| Countries that End in R | 0 | - | 4.83 | 100,958 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 152,846 |
| Countries Ending in "IA" | 0 | - | 4.99 | 201,010 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 165,609 |
| Countries by Last Two Letters | 0 | - | 4.88 | 131,737 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 137,650 |
| Countries That End in Y | 0 | - | 4.91 | 183,011 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 191,917 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 148,083 |
| Countries that End in I | 0 | - | 4.92 | 118,211 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 177,479 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 93,206 |
| Countries That End in NIA | 0 | - | 4.92 | 106,884 |
| Countries That End in BIA | 0 | - | 4.92 | 144,911 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 162,598 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 115,926 |
| Countries That End in RIA | 0 | - | 4.92 | 123,450 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 107,226 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 218,413 |
| Divided Country Name Puzzle #2 | 0 | - | 4.98 | 128,865 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 120,833 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 86,733 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 72,105 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 49,732 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 99,749 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 121,360 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 47,126 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 49,386 |
| Countries that End in L | 0 | - | 4.94 | 153,150 |
| "Land" Countries | 0 | - | 4.98 | 301,496 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 199,217 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,305 |
| City to Country Quiz #1 | 0 | - | 4.96 | 151,529 |
| City to Country Quiz #3 | 0 | - | 4.87 | 105,577 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 76,303 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 222,292 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 194,554 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 123,387 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 158,484 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 218,303 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 148,681 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 69,390 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 106,415 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.94 | 85,265 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 73,416 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 144,932 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 60,378 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,671,882 |
| One Border Countries | 0 | - | 4.98 | 448,757 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 70,100 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 68,978 |
| Countries with the Most HIV | 0 | - | 4.47 | 43,877 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 42,832 |
| Hindu Countries | 0 | - | 4.85 | 47,400 |
| Countries in a JetPunk Fish of the World Map | 0 | - | 4.99 | 58,044 |
| Countries in a Blue JetPunk Fish of the World Map | 0 | - | 4.94 | 69,296 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 49,090 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 58,952 |
| Biggest Trading Partners – Australia | 0 | - | 4.92 | 59,051 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 82,959 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 259,665 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 117,287 |
