| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,611 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,154,394 |
| Landlocked Countries | 0 | - | 4.99 | 416,547 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,739,815 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,879 |
| Himalayan Countries | 0 | - | 4.95 | 136,455 |
| Andean Countries | 0 | - | 4.95 | 83,466 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,726 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,962 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,401 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,007 |
| Danube Countries | 0 | - | 4.97 | 71,384 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,194 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,841 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,133 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,092 |
| European Landlocked Countries | 0 | - | 4.99 | 146,120 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,747 |
| Countries with the Most Species | 0 | - | 4.99 | 101,312 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,880 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,325 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,502 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,151 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,800 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,176 |
| Countries in the Alps | 0 | - | 4.86 | 117,308 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,889 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,865 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,246 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,735 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,809 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,248 |
| Countries with Glaciers | 0 | - | 4.97 | 104,845 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,972 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,989 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,791 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,323 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,354 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,199 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,714 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,986 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,998 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,685 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,887 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,421 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,226 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,937 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,546 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,818 |
| Largest Countries By Category | 0 | - | 4.97 | 157,236 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,862 |
| Countries by Countries | 0 | - | 4.96 | 62,582 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,861 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,076 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,075 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,401 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,706 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,788 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,685 |
| Island Countries | 0 | - | 4.99 | 708,770 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,204 |
| Northernmost Countries | 0 | - | 4.99 | 359,310 |
| Countries of South America | 0 | - | 5.00 | 919,518 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,468 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,222 |
| "Land" Countries | 0 | - | 4.98 | 334,556 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,153 |
| Elements Named for Countries | 0 | - | 4.52 | 24,540 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,241 |
| Countries with Megacities | 0 | - | 4.99 | 248,871 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,096 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,527 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,455 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,477 |
| Countries by Official Language | 0 | - | 4.95 | 193,977 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,487 |
| Countries in their Native Language | 0 | - | 4.99 | 197,606 |
| Independence from Whom | 0 | - | 4.99 | 210,772 |
| Subdivisions by Country | 0 | - | 4.86 | 50,191 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,304 |
| Megadiverse Countries | 0 | - | 4.96 | 134,527 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,801 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,072 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,621 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,946 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,424 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,208 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,564 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,539 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,364 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,804 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,144 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,578 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,680 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,636 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,849 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,196 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,518 |
| World Map Quiz | 0 | - | 4.81 | 64,059 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,312 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,681 |
| Countries by Founding Story | 0 | - | 4.95 | 76,860 |
| Countries by Road Signs | 0 | - | 4.98 | 53,401 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,041 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,653 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,384 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,673 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,255 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,449 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,612 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,140 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,632 |
| Widest Countries East to West | 0 | - | 4.92 | 129,131 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,326 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,631 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,906 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,945 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,963 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,346 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,078 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,669 |
| Countries with Double Letters | 0 | - | 4.96 | 94,077 |
| Countries that End in N | 0 | - | 4.95 | 164,849 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,510 |
| Countries with Six Letters | 0 | - | 4.93 | 211,077 |
| Countries with W | 0 | - | 4.97 | 158,762 |
| Countries with Z | 0 | - | 4.98 | 288,692 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,995 |
| Countries That End in U | 0 | - | 4.95 | 119,889 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,121 |
| Countries that End in O | 0 | - | 4.92 | 158,837 |
| Countries that End in R | 0 | - | 4.87 | 118,491 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,106 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,696 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,719 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,797 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,359 |
| Countries That End in Y | 0 | - | 4.90 | 185,403 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,808 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,068 |
| Countries that End in I | 0 | - | 4.94 | 134,653 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,671 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,399 |
| Countries That End in NIA | 0 | - | 4.92 | 109,283 |
| Countries That End in BIA | 0 | - | 4.93 | 148,545 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,410 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,756 |
| Countries That End in RIA | 0 | - | 4.93 | 126,321 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,312 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,049 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,847 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,184 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,759 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,134 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,423 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,927 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,825 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,986 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,500 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,183 |
| Countries that End in L | 0 | - | 4.94 | 156,272 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,826 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,060 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,708 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,555 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,609 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,288 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,791 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,303 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,806 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,229 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,037 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,867 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,287 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,513 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,507 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,731 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,797 |
| One Border Countries | 0 | - | 4.98 | 466,352 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,813,084 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,603,560 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,380 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,066 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,469 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,262 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,869 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,312 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,072 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,074 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,618 |
| Countries by National Anthem | 0 | - | 4.92 | 71,111 |
| NATO Countries | 0 | - | 4.98 | 278,008 |
| EU Countries Quiz | 0 | - | 4.99 | 271,558 |
| Recently Independent Countries | 0 | - | 4.98 | 158,361 |
| French-Speaking Countries | 0 | - | 4.85 | 269,730 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,508 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,890 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,308 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,300 |
