| Landlocked Countries | 0 | - | 4.99 | 425,941 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,884,798 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,314 |
| Himalayan Countries | 0 | - | 4.93 | 140,280 |
| Andean Countries | 0 | - | 4.94 | 85,487 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,630 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,027 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,197 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,453 |
| Danube Countries | 0 | - | 4.97 | 72,405 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,605 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,850 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,146 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,629 |
| European Landlocked Countries | 0 | - | 4.99 | 147,614 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,317 |
| Countries with the Most Species | 0 | - | 4.99 | 103,572 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,427 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,778 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,889 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,842 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,583 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,025 |
| Countries in the Alps | 0 | - | 4.87 | 118,787 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,647 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,881 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,969 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,034 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,968 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,266 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,417 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,872 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,429 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,184 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,883 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,750 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,565 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,805 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,899 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,870 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,623 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 72,774 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,681 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,755 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,172 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,511 |
| Largest Countries By Category | 0 | - | 4.97 | 158,878 |
| Countries by Countries | 0 | - | 4.96 | 63,649 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,277 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,401 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,674 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,110 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,804,882 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,464 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,713 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,733 |
| Island Countries | 0 | - | 4.99 | 712,598 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,828 |
| Northernmost Countries | 0 | - | 4.99 | 364,048 |
| Countries of South America | 0 | - | 5.00 | 932,784 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,478 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,536 |
| "Land" Countries | 0 | - | 4.98 | 338,406 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,871 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,180 |
| Countries with Megacities | 0 | - | 4.99 | 267,153 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,867 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,137 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,178 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,252 |
| Countries by Official Language | 0 | - | 4.95 | 196,011 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,653 |
| Countries in their Native Language | 0 | - | 4.99 | 199,750 |
| Independence from Whom | 0 | - | 4.99 | 213,083 |
| Subdivisions by Country | 0 | - | 4.87 | 50,619 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,457 |
| Megadiverse Countries | 0 | - | 4.96 | 135,285 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,955 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,545 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,681 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,232 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,201 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,859 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,122 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,571 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,059 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,259 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,550 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,382 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,448 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,150 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,587 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,868 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,380 |
| World Map Quiz | 0 | - | 4.81 | 65,741 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,302 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,719 |
| Countries by Founding Story | 0 | - | 4.95 | 77,804 |
| Countries by Road Signs | 0 | - | 4.98 | 54,352 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,274 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,095 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,570 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,597 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,443 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,545 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,740 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,699 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,735 |
| Widest Countries East to West | 0 | - | 4.92 | 130,466 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,601 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,271 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,522 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,070 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,985 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,493 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,504 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,892 |
| Countries with Double Letters | 0 | - | 4.96 | 97,095 |
| Countries that End in N | 0 | - | 4.95 | 171,966 |
| Countries with Five Letters | 0 | - | 4.96 | 283,794 |
| Countries with Six Letters | 0 | - | 4.94 | 214,503 |
| Countries with W | 0 | - | 4.96 | 160,959 |
| Countries with Z | 0 | - | 4.98 | 292,476 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,296 |
| Countries That End in U | 0 | - | 4.95 | 121,198 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,122 |
| Countries that End in O | 0 | - | 4.92 | 160,222 |
| Countries that End in R | 0 | - | 4.87 | 119,189 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,945 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,863 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,163 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,842 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,769 |
| Countries That End in Y | 0 | - | 4.91 | 186,095 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,475 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,283 |
| Countries that End in I | 0 | - | 4.94 | 135,322 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,638 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,062 |
| Countries That End in NIA | 0 | - | 4.92 | 110,065 |
| Countries That End in BIA | 0 | - | 4.93 | 149,583 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,557 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,780 |
| Countries That End in RIA | 0 | - | 4.93 | 127,061 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,395 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,604 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,195 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,635 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,188 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,813 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,336 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,542 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,917 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,655 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,738 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,430 |
| Countries that End in L | 0 | - | 4.94 | 157,137 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,065 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,348 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,520 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,009 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,460 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,459 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,151 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,440 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,275 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,990 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,220 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,242 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,834 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,249 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,231 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,525 |
| One Border Countries | 0 | - | 4.98 | 471,982 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,698 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,849,088 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,653,461 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,333 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,055 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,669 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,906 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,221 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,619 |
| Countries by National Anthem | 0 | - | 4.92 | 71,409 |
| NATO Countries | 0 | - | 4.98 | 283,473 |
| EU Countries Quiz | 0 | - | 4.99 | 277,964 |
| Recently Independent Countries | 0 | - | 4.98 | 160,361 |
| French-Speaking Countries | 0 | - | 4.85 | 271,692 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,047 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,814 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,419 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,021 |
| German-Speaking Countries | 0 | - | 4.92 | 146,028 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,398 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,567 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,238 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,405 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,463 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,818 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 113,102 |
