| Landlocked Countries | 0 | - | 4.99 | 423,807 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,731,024 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,336 |
| Himalayan Countries | 0 | - | 4.94 | 139,513 |
| Andean Countries | 0 | - | 4.94 | 85,053 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,242 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,443 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,800 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,114 |
| Danube Countries | 0 | - | 4.97 | 72,208 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,302 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,622 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,704 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,211 |
| European Landlocked Countries | 0 | - | 4.99 | 147,376 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,974 |
| Countries with the Most Species | 0 | - | 4.99 | 103,421 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,111 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,681 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,792 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,693 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,438 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,850 |
| Countries in the Alps | 0 | - | 4.87 | 118,489 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,069 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,449 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,810 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,812 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,741 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,097 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,916 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,669 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,295 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,017 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,761 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,630 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,385 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,639 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,721 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,373 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,475 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,222 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,350 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,902 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,653 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,380 |
| Largest Countries By Category | 0 | - | 4.97 | 158,543 |
| Countries by Countries | 0 | - | 4.96 | 63,437 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,004 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,348 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,620 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,279 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,206 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,903 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,791,992 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,222 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,096 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,529 |
| Island Countries | 0 | - | 4.99 | 711,753 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,414 |
| Northernmost Countries | 0 | - | 4.99 | 363,062 |
| Countries of South America | 0 | - | 5.00 | 929,949 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,224 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,307 |
| "Land" Countries | 0 | - | 4.98 | 337,880 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,477 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,437 |
| Countries with Megacities | 0 | - | 4.99 | 265,857 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,234 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,751 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,493 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,842 |
| Countries by Official Language | 0 | - | 4.95 | 195,636 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,055 |
| Countries in their Native Language | 0 | - | 4.99 | 199,413 |
| Independence from Whom | 0 | - | 4.99 | 212,557 |
| Subdivisions by Country | 0 | - | 4.87 | 50,533 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,069 |
| Megadiverse Countries | 0 | - | 4.96 | 135,154 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,437 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,460 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,339 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,162 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,373 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,698 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,740 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,470 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,748 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,207 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,092 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,218 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,331 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,058 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,476 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,601 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,821 |
| World Map Quiz | 0 | - | 4.81 | 65,379 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,265 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,531 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,375 |
| Countries by Founding Story | 0 | - | 4.95 | 77,534 |
| Countries by Road Signs | 0 | - | 4.98 | 54,205 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,649 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,672 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,328 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,952 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,192 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,313 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,528 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,583 |
| Tallest Countries North to South | 0 | - | 4.85 | 128,837 |
| Widest Countries East to West | 0 | - | 4.92 | 130,184 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,529 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,021 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,439 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,929 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,806 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,080 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,447 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,851 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,094 |
| Countries with Double Letters | 0 | - | 4.96 | 96,678 |
| Countries that End in N | 0 | - | 4.95 | 171,557 |
| Countries with Five Letters | 0 | - | 4.96 | 283,203 |
| Countries with Six Letters | 0 | - | 4.94 | 214,020 |
| Countries with W | 0 | - | 4.96 | 160,639 |
| Countries with Z | 0 | - | 4.98 | 291,956 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,003 |
| Countries That End in U | 0 | - | 4.95 | 121,019 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,790 |
| Countries that End in O | 0 | - | 4.92 | 159,671 |
| Countries that End in R | 0 | - | 4.87 | 119,073 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,830 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,468 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,933 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,650 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,574 |
| Countries That End in Y | 0 | - | 4.91 | 185,997 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,188 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,073 |
| Countries that End in I | 0 | - | 4.94 | 135,215 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,375 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,930 |
| Countries That End in NIA | 0 | - | 4.92 | 109,922 |
| Countries That End in BIA | 0 | - | 4.93 | 149,401 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,335 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,619 |
| Countries That End in RIA | 0 | - | 4.93 | 126,937 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,216 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,097 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,954 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,392 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,932 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,690 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,188 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,490 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,722 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,547 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,518 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,203 |
| Countries that End in L | 0 | - | 4.94 | 156,994 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,711 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,305 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,152 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,083 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,133 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,116 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,919 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,300 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,054 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,727 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,053 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,171 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,759 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,119 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,228 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,707 |
| One Border Countries | 0 | - | 4.98 | 470,944 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,580 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,841,918 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,642,909 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,119 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,611 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,434 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,733 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,978 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,403 |
| Countries by National Anthem | 0 | - | 4.92 | 71,358 |
| NATO Countries | 0 | - | 4.98 | 282,493 |
| EU Countries Quiz | 0 | - | 4.99 | 276,699 |
| Recently Independent Countries | 0 | - | 4.98 | 159,705 |
| French-Speaking Countries | 0 | - | 4.85 | 271,295 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,976 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,195 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,275 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,680 |
| German-Speaking Countries | 0 | - | 4.92 | 145,895 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,110 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,405 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 167,213 |
