| Landlocked Countries | 0 | - | 4.99 | 417,153 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,202,775 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,174 |
| Himalayan Countries | 0 | - | 4.95 | 136,732 |
| Andean Countries | 0 | - | 4.95 | 83,585 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,847 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,136 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,504 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,107 |
| Danube Countries | 0 | - | 4.97 | 71,478 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,291 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,890 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,277 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,267 |
| European Landlocked Countries | 0 | - | 4.99 | 146,180 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,850 |
| Countries with the Most Species | 0 | - | 4.99 | 102,306 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,984 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,352 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,533 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,201 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,846 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,224 |
| Countries in the Alps | 0 | - | 4.86 | 117,409 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,953 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,019 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,294 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,792 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,890 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,313 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,057 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,030 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,852 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,389 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,388 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,226 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,779 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,039 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,047 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,819 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,929 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,457 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,294 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,291 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,720 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,867 |
| Largest Countries By Category | 0 | - | 4.97 | 157,347 |
| Countries by Countries | 0 | - | 4.96 | 62,652 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,941 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,100 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,415 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,137 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,744,395 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,211 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,568 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,536 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,418 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,043 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,142 |
| Island Countries | 0 | - | 4.99 | 709,040 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,951 |
| Northernmost Countries | 0 | - | 4.99 | 359,650 |
| Countries of South America | 0 | - | 5.00 | 920,393 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,897 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,446 |
| "Land" Countries | 0 | - | 4.98 | 335,019 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,720 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,454 |
| Countries with Megacities | 0 | - | 4.99 | 249,354 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,309 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,648 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,629 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,621 |
| Countries by Official Language | 0 | - | 4.95 | 194,191 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,994 |
| Countries in their Native Language | 0 | - | 4.99 | 197,795 |
| Independence from Whom | 0 | - | 4.99 | 210,939 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,431 |
| Megadiverse Countries | 0 | - | 4.96 | 134,588 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,959 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,102 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,656 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,959 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,507 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,263 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,681 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,585 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,399 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,818 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,437 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,606 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,707 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,674 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,885 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,244 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,714 |
| World Map Quiz | 0 | - | 4.81 | 64,198 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,659 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,756 |
| Countries by Founding Story | 0 | - | 4.95 | 76,926 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,147 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,728 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,457 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,836 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,330 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,511 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,675 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,171 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,952 |
| Widest Countries East to West | 0 | - | 4.92 | 129,207 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,339 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,717 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,944 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,987 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,031 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,404 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,144 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,687 |
| Countries with Double Letters | 0 | - | 4.96 | 94,433 |
| Countries that End in N | 0 | - | 4.95 | 168,313 |
| Countries with Five Letters | 0 | - | 4.96 | 268,832 |
| Countries with Six Letters | 0 | - | 4.93 | 211,604 |
| Countries with W | 0 | - | 4.97 | 159,045 |
| Countries with Z | 0 | - | 4.98 | 289,111 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,250 |
| Countries That End in U | 0 | - | 4.95 | 120,111 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,307 |
| Countries that End in O | 0 | - | 4.92 | 158,980 |
| Countries that End in R | 0 | - | 4.87 | 118,577 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,367 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,899 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,838 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,887 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,469 |
| Countries That End in Y | 0 | - | 4.90 | 185,490 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,943 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,174 |
| Countries that End in I | 0 | - | 4.94 | 134,716 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,773 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,449 |
| Countries That End in NIA | 0 | - | 4.92 | 109,342 |
| Countries That End in BIA | 0 | - | 4.93 | 148,634 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,491 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,834 |
| Countries That End in RIA | 0 | - | 4.93 | 126,386 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,406 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,210 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,940 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,270 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,889 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,188 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,500 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,023 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,903 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,070 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,595 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,295 |
| Countries that End in L | 0 | - | 4.94 | 156,348 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,171 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,094 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,740 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,600 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,656 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,416 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,880 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,417 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,883 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,333 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,089 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,886 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,314 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,539 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,543 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,718 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,050 |
| One Border Countries | 0 | - | 4.98 | 466,718 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,815,684 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,606,560 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,341 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,023 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,422 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,127 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,156 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,701 |
| Countries by National Anthem | 0 | - | 4.92 | 71,139 |
| NATO Countries | 0 | - | 4.98 | 278,403 |
| EU Countries Quiz | 0 | - | 4.99 | 271,979 |
| Recently Independent Countries | 0 | - | 4.98 | 158,445 |
| French-Speaking Countries | 0 | - | 4.85 | 269,887 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,603 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,089 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,631 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,740 |
| German-Speaking Countries | 0 | - | 4.91 | 144,496 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,079 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,678 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,526 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,213 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,306 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,153 |
