| Landlocked Countries | 0 | - | 4.99 | 424,894 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,815,481 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,824 |
| Himalayan Countries | 0 | - | 4.93 | 139,913 |
| Andean Countries | 0 | - | 4.94 | 85,256 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,424 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,758 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,991 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,294 |
| Danube Countries | 0 | - | 4.97 | 72,302 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,460 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,744 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,932 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,431 |
| European Landlocked Countries | 0 | - | 4.99 | 147,502 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,151 |
| Countries with the Most Species | 0 | - | 4.99 | 103,510 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,291 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,725 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,838 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,774 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,508 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,938 |
| Countries in the Alps | 0 | - | 4.87 | 118,656 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,430 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,687 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,905 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,933 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,859 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,172 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,297 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,796 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,362 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,100 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,810 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,685 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,481 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,716 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,812 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,614 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,547 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,639 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,542 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,366 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,934 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,458 |
| Largest Countries By Category | 0 | - | 4.97 | 158,731 |
| Countries by Countries | 0 | - | 4.96 | 63,549 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,158 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,376 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,652 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,703 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,316 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,021 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,854 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,785 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,438 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,224 |
| Island Countries | 0 | - | 4.99 | 712,241 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,765 |
| Northernmost Countries | 0 | - | 4.99 | 363,612 |
| Countries of South America | 0 | - | 5.00 | 931,489 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,859 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,558 |
| "Land" Countries | 0 | - | 4.98 | 338,191 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,766 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,933 |
| Countries with Megacities | 0 | - | 4.99 | 266,677 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,639 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,992 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,942 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,109 |
| Countries by Official Language | 0 | - | 4.95 | 195,849 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,436 |
| Countries in their Native Language | 0 | - | 4.99 | 199,622 |
| Independence from Whom | 0 | - | 4.99 | 212,877 |
| Subdivisions by Country | 0 | - | 4.87 | 50,581 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,303 |
| Megadiverse Countries | 0 | - | 4.96 | 135,220 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,833 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,499 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,406 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,201 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,498 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,793 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,002 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,526 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,789 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,234 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,335 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,332 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,401 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,115 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,543 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,657 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,138 |
| World Map Quiz | 0 | - | 4.81 | 65,564 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,843 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,627 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,493 |
| Countries by Founding Story | 0 | - | 4.95 | 77,726 |
| Countries by Road Signs | 0 | - | 4.98 | 54,291 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,081 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,988 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,473 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,357 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,328 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,453 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,655 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,643 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,438 |
| Widest Countries East to West | 0 | - | 4.92 | 130,369 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,162 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,486 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,004 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,902 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,398 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,475 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,875 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,160 |
| Countries with Double Letters | 0 | - | 4.96 | 96,910 |
| Countries that End in N | 0 | - | 4.94 | 171,786 |
| Countries with Five Letters | 0 | - | 4.96 | 283,542 |
| Countries with Six Letters | 0 | - | 4.94 | 214,266 |
| Countries with W | 0 | - | 4.96 | 160,825 |
| Countries with Z | 0 | - | 4.98 | 292,254 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,174 |
| Countries That End in U | 0 | - | 4.95 | 121,114 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,982 |
| Countries that End in O | 0 | - | 4.92 | 159,782 |
| Countries that End in R | 0 | - | 4.87 | 119,133 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,893 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,697 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,060 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,759 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,689 |
| Countries That End in Y | 0 | - | 4.91 | 186,049 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,354 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,189 |
| Countries that End in I | 0 | - | 4.94 | 135,271 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,517 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,008 |
| Countries That End in NIA | 0 | - | 4.92 | 109,995 |
| Countries That End in BIA | 0 | - | 4.93 | 149,516 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,440 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,705 |
| Countries That End in RIA | 0 | - | 4.93 | 127,014 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,310 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,410 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,080 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,522 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,094 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,763 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,268 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,520 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,827 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,609 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,636 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,323 |
| Countries that End in L | 0 | - | 4.94 | 157,068 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,684 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,330 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,274 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,832 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,378 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,305 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,062 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,382 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,183 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,882 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,150 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,211 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,803 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,189 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,909 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,176 |
| One Border Countries | 0 | - | 4.98 | 471,564 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,663 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,845,791 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,649,011 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,259 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,873 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,571 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,844 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,128 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,522 |
| Countries by National Anthem | 0 | - | 4.92 | 71,392 |
| NATO Countries | 0 | - | 4.98 | 283,044 |
| EU Countries Quiz | 0 | - | 4.99 | 277,389 |
| Recently Independent Countries | 0 | - | 4.98 | 159,915 |
| French-Speaking Countries | 0 | - | 4.85 | 271,517 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,016 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,540 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,956 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,488 |
| German-Speaking Countries | 0 | - | 4.92 | 145,967 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,196 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,484 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,732 |
