| Countries of the World Quiz | 0 | - | 5.00 | 46,907,290 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,537 |
| Landlocked Countries | 0 | - | 4.99 | 413,460 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,304 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,854 |
| Countries with Glaciers | 0 | - | 4.97 | 104,649 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,620 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,225 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,715,364 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,518 |
| Himalayan Countries | 0 | - | 4.95 | 135,302 |
| Andean Countries | 0 | - | 4.94 | 82,802 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,194 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,160 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,871 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,575 |
| Danube Countries | 0 | - | 4.97 | 71,066 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,736 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,522 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,437 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,360 |
| European Landlocked Countries | 0 | - | 4.99 | 145,735 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,178 |
| Countries with the Most Species | 0 | - | 4.99 | 95,235 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,317 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,195 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,363 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,949 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,563 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,938 |
| Countries in the Alps | 0 | - | 4.86 | 116,793 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,543 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,232 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,994 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,406 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,137 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,982 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,555 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,741 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,206 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,037 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,192 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,035 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,439 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,724 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,741 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,028 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,625 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,248 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,754 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,206 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,628 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,595 |
| Largest Countries By Category | 0 | - | 4.97 | 156,731 |
| Countries by Countries | 0 | - | 4.96 | 62,245 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,356 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,959 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,327 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,748 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,687 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,068 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,770 |
| Island Countries | 0 | - | 4.99 | 707,559 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,285 |
| Northernmost Countries | 0 | - | 4.99 | 357,653 |
| Countries of South America | 0 | - | 5.00 | 914,450 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,142 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,844 |
| "Land" Countries | 0 | - | 4.98 | 333,604 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,902 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,098 |
| Countries with Megacities | 0 | - | 4.99 | 246,734 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,028 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,896 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,451 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,805 |
| Countries by Official Language | 0 | - | 4.95 | 192,742 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,077 |
| Countries in their Native Language | 0 | - | 4.99 | 196,605 |
| Independence from Whom | 0 | - | 4.99 | 209,646 |
| Subdivisions by Country | 0 | - | 4.86 | 50,061 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,720 |
| Megadiverse Countries | 0 | - | 4.97 | 133,888 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,773 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,914 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,421 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,854 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,636 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,988 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,898 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,133 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,208 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,738 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,540 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,405 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,483 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,491 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,657 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,013 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,537 |
| World Map Quiz | 0 | - | 4.81 | 63,477 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,579 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,313 |
| Countries by Founding Story | 0 | - | 4.95 | 76,518 |
| Countries by Road Signs | 0 | - | 4.98 | 53,088 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,317 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,974 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,932 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,702 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,838 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,047 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,261 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,934 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,325 |
| Widest Countries East to West | 0 | - | 4.92 | 128,595 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,215 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,190 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,561 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,679 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,616 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,027 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,049 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,575 |
| Countries with Double Letters | 0 | - | 4.97 | 93,356 |
| Countries that End in N | 0 | - | 4.94 | 156,634 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,654 |
| Countries with Six Letters | 0 | - | 4.93 | 210,318 |
| Countries with W | 0 | - | 4.97 | 158,206 |
| Countries with Z | 0 | - | 4.98 | 287,835 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,526 |
| Countries That End in U | 0 | - | 4.95 | 119,506 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,515 |
| Countries that End in O | 0 | - | 4.92 | 158,540 |
| Countries that End in R | 0 | - | 4.87 | 118,262 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,854 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,985 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,305 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,477 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,995 |
| Countries That End in Y | 0 | - | 4.90 | 185,194 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,346 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,660 |
| Countries that End in I | 0 | - | 4.94 | 134,402 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,163 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,182 |
| Countries That End in NIA | 0 | - | 4.92 | 108,994 |
| Countries That End in BIA | 0 | - | 4.92 | 147,698 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,046 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,472 |
| Countries That End in RIA | 0 | - | 4.93 | 126,067 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,986 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,160 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,504 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,882 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,339 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,921 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,104 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,630 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,489 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,808 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,115 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,795 |
| Countries that End in L | 0 | - | 4.94 | 155,710 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,104 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,984 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,502 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,281 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,418 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,846 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,068 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,906 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,168 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,356 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,511 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,607 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,167 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,415 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,307 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,810 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,562 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,800,500 |
| One Border Countries | 0 | - | 4.98 | 464,295 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,587,110 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,355 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,811 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,880 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,861 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,463 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,575 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,242 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,454 |
| Countries by National Anthem | 0 | - | 4.92 | 71,015 |
| NATO Countries | 0 | - | 4.98 | 275,648 |
| EU Countries Quiz | 0 | - | 4.99 | 269,867 |
| Recently Independent Countries | 0 | - | 4.98 | 157,973 |
| French-Speaking Countries | 0 | - | 4.85 | 268,773 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,370 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,945 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,864 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,208 |
