| Landlocked Countries | 0 | - | 4.99 | 412,989 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,863,558 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,124 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,312 |
| Himalayan Countries | 0 | - | 4.95 | 135,109 |
| Andean Countries | 0 | - | 4.94 | 82,692 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,106 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,028 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,790 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,498 |
| Danube Countries | 0 | - | 4.97 | 71,012 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,663 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,469 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,323 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,237 |
| European Landlocked Countries | 0 | - | 4.99 | 145,682 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,075 |
| Countries with the Most Species | 0 | - | 4.99 | 95,201 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,230 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,179 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,337 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,915 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,527 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,888 |
| Countries in the Alps | 0 | - | 4.87 | 116,710 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,492 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,114 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,955 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,340 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,078 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,943 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,487 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,696 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,444 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,984 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,169 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,004 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,386 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,692 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,690 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,914 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,581 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,209 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,694 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,912 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,413 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,553 |
| Largest Countries By Category | 0 | - | 4.97 | 156,650 |
| Countries by Countries | 0 | - | 4.96 | 62,186 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,252 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,937 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,308 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,674 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,866 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,174 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,877 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,074 |
| Island Countries | 0 | - | 4.99 | 707,312 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,554 |
| Northernmost Countries | 0 | - | 4.99 | 357,335 |
| Countries of South America | 0 | - | 5.00 | 913,631 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,951 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,676 |
| "Land" Countries | 0 | - | 4.98 | 333,462 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,443 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,898 |
| Countries with Megacities | 0 | - | 4.99 | 246,283 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,826 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,751 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,280 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,690 |
| Countries by Official Language | 0 | - | 4.95 | 192,612 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,925 |
| Countries in their Native Language | 0 | - | 4.99 | 196,500 |
| Independence from Whom | 0 | - | 4.99 | 209,514 |
| Subdivisions by Country | 0 | - | 4.86 | 50,036 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,601 |
| Megadiverse Countries | 0 | - | 4.97 | 133,839 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,672 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,883 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,380 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,843 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,565 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,945 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,613 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,073 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,185 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,719 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,423 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,373 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,444 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,460 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,613 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,987 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,385 |
| World Map Quiz | 0 | - | 4.81 | 63,390 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,299 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,236 |
| Countries by Founding Story | 0 | - | 4.95 | 76,461 |
| Countries by Road Signs | 0 | - | 4.98 | 53,006 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,191 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,896 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,867 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,544 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,787 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,984 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,190 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,888 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,275 |
| Widest Countries East to West | 0 | - | 4.92 | 128,540 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,195 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,104 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,528 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,634 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,531 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,963 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,035 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,553 |
| Countries with Double Letters | 0 | - | 4.97 | 93,249 |
| Countries that End in N | 0 | - | 4.94 | 156,312 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,521 |
| Countries with Six Letters | 0 | - | 4.93 | 210,216 |
| Countries with W | 0 | - | 4.97 | 158,123 |
| Countries with Z | 0 | - | 4.98 | 287,601 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,447 |
| Countries That End in U | 0 | - | 4.95 | 119,459 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,381 |
| Countries that End in O | 0 | - | 4.92 | 158,492 |
| Countries that End in R | 0 | - | 4.86 | 118,213 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,816 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,891 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,198 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,400 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,583 |
| Countries That End in Y | 0 | - | 4.90 | 185,161 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,203 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,571 |
| Countries that End in I | 0 | - | 4.94 | 134,325 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,044 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,151 |
| Countries That End in NIA | 0 | - | 4.92 | 108,941 |
| Countries That End in BIA | 0 | - | 4.92 | 147,627 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,993 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,424 |
| Countries That End in RIA | 0 | - | 4.93 | 126,024 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,931 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,013 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,452 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,834 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,276 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,877 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,047 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,568 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,418 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,776 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,032 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,711 |
| Countries that End in L | 0 | - | 4.94 | 155,653 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,764 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,967 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,470 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,234 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,373 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,375 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,972 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,843 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,078 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,269 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,452 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,574 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,149 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,395 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,265 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,775 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,239 |
| One Border Countries | 0 | - | 4.98 | 463,683 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,096 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,584,328 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,740 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,735 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,777 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,410 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,506 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,169 |
| Countries by National Anthem | 0 | - | 4.92 | 71,000 |
| NATO Countries | 0 | - | 4.98 | 275,221 |
| EU Countries Quiz | 0 | - | 4.99 | 269,524 |
| Recently Independent Countries | 0 | - | 4.98 | 157,884 |
| French-Speaking Countries | 0 | - | 4.85 | 268,644 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,340 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,769 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,577 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,782 |
| German-Speaking Countries | 0 | - | 4.89 | 123,479 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,545 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,269 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 162,893 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,821 |
| Solve the Secret Country #2 | 0 | - | 4.84 | 115,886 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,422 |
